School of Engineering of the University of Orléans Student Projects Catalogue 2013-14 Student Projects Catalogue 2013/14 Polytech Orléans Polytech Orléans Ecole Polytechnique de l’université d’Orléans Direction management des formations, prospective et innovation pédagogique : 02 38 49 43 56 : 02 38 41 73 83 : directrice.formations@univ-orleans.fr Site Léonard de Vinci 8 rue Léonard de Vinci 45072 ORLÉANS cedex 02 Site Galilée 12, rue de Blois – BP 6744 45067 ORLÉANS cedex 02 Site de l’IUT de l’Indre 2 rue François Mitterrand 36000 CHÂTEAUROUX STUDENT PROJECTS CATALOGUE 2013/14 | 3 Contents Message from the Director7 Ecotechnologies9 2D+ image viewer 10 Ablation of silicon and titanium oxide with picosecond and nanosecond pulsed laser in air at atmospheric pressure and under vacuum 11 Acquisition of analog signals on computer system 12 Bluetooth data logger 13 Broadband absorption spectroscopy in a tig arc plasma 14 Capturing of ethernet flow 15 Deep etching of silicon through SiO2 thin film by using cryogenic method 16 Development of highly specific surfaces by cryo-etching process 17 Raspberry Pi print system 18 Energy enhancement project: high-bay warehouse lighting 19 Femtosecond and nanosecond laser micro-machining 20 Informative website for a new student at Polytech designed for nomad devices 21 Micro-thermoelectric generator 22 3D printing 23 Refurbishment of dye laser 24 Studies of epoxy resins stability used for final packaging in industry 25 Water curtain light 26 Water treatment by plasma 27 Civil Engineering29 Study of the degradation of fluorescent tracers under natural conditions 30 Balance of operation of a methanation unit 31 Calculation of reinforced concrete structures (design the foundations of a building) 32 Characterization of recent artificial lacustrian filling 33 Design and calculation of temporary piers on a metallic bridge 34 Design and drawing of the restoration of a county road crossed by high rail line 35 POLYTECH ORLEANS 4 | STUDENT PROJECTS CATALOGUE 2013/14 Design of a three-dimensional modular construction in wood 36 Design of a wooden bridge for pedestrians and cyclists over the Loire River 37 Environmental impact assessment of a quarry on the quality of water 38 Establishment of a methodology of study using numerical modeling to comprehend a phenomenon of Tuffeau alteration 39 Gypsum soil stabilization by a binary binder 40 Hydrological and hydrogeochemical studies on Charlemagne Island 41 Life cycle analysis as a decision support tool 42 Life cycle assessment applied to building 43 Parametrical study of the reservoir rock behavioral model used for oil basin modeling 44 Reinforced concrete design 45 Report on arithmetic methods of risk accumulation in the environment 46 Response to a call for tender for the building of a nursing home for disabled adults 47 Response to a call for tender in the public works area 48 Sizing and modeling of building with five floors and a basement 49 Study of the ecosystem services due to urban green ways 50 The evaluation of the calculation modules according to the Eurocode 2 and Eurocode 7 for the foundations and the structural elements of a building 51 The renovation of a private outdoor area 52 The structural design of heavy-duty pavements for ports 53 Tuffeau vs Richemont’s stone in a case of a fire, using colorimetry 54 Urban mobility plan in the pays forêt d’Orléans Val de Loire 55 Urban sprawl in campinas: evaluation through orbital imagery 56 Viscoelastic behavior and mechanical homogenization of masonry wall 57 Mechanical Engineering59 Agglomeration study in a fluidized bed reactor 60 Characterization and control of separation on a ramp by synthetic jets 61 Characterization of diesel injection in cold conditions 62 Characterization of the box brake on a manual window regulator of a car 63 Conductivity parameters sensibility study and resizing 64 Create a digital model of a cooperative fuel research engine 65 Design, manufacture of a solar tracker demonstrator 66 Designing a robot simulating a baby for testing diapers 67 Determination of laminar and turbulent flame speed in a sphere with pressure signal and optical measure 68 Development of a flame-wall interaction model in the combustion system in spark ignition engines via simulation tools 69 POLYTECH ORLEANS STUDENT PROJECTS CATALOGUE 2013/14 | 5 Development of a test bench for a miniature turbojet 70 Draft of an electric light aircraft 71 Economic MPC for the reduction of energy consumption 72 Enslavement of a couple of spoilers 73 Haptic remote control of six axis robot 74 Heat transfer in a gearbox 75 Improve the range of the spindle drive gearbox motor “Ram Hit” with an electric array 76 Improvement of a computer software for the aerodynamics of thick sails 77 Industrial robotics: handling flasks 78 Mechanical behavior modeling of composite materials by a homogenization approach 79 Modeling of a human femur fracture 80 Modification of a baby model’s water tightness during his re-conception 81 Optimization of centre sciences heat pump 82 Optimization of the valve of an air balloon 83 Hybrid vehicle with energy management system 84 Potential of Superhydrophobic surface treatments in hydrodynamics 85 Robotic youth challenger 86 Simulation and performances testing for new position sensor bearing concepts for electrical engines control 87 Simulation of what happens to a person’s femur during a fall, taking muscle amortization into account 88 Study of the drapability of flax reinforcements 89 Study of the thermomechanical behavior of a ladle 90 Study of yarn bending 91 The Canadian well as a solution for a natural supply of energy for air treatment 92 Thermal-mechanical research of refractory lining with joints 93 Thermo-mechanical modeling of a complex structure 94 Understanding the transformation phenomena of olivine phase 95 Upgrading an experimental tool sprayer 96 What is the energetic performance of my house? 97 Practical work of thermal regulation of a building 98 The Final Year Projects Forum 100 Our remarkable equipment101 Index of students102 Index of participants in the Final Year Projects Forum103 Index of participating enterprises103 POLYTECH ORLEANS STUDENT PROJECTS CATALOGUE 2013/14 | 7 Message from the Director One essential element of the activites of any engineering school is the maintenance of partnerships with businesses and institutions in the local community and beyond. Thanks to its close ties to such organizations, Polytech Orléans can guarantee the employability of its graduates (of which 90% find a first job within three months of receiving their degree), accurately adapt its programmes to respond to the changing needs of the business and scientific community, and acquire the most up-to-date equipment, materials and software. Our partners also benefit from these exchanges by receiving high-level scientific expertise as they welcome hundreds of our students in internships each year and avail themselves of the educational facilities and equipment we can provide. To prepare for their entry into the professional world, fifth-year students at Polytech Orléans are required to prepare and complete a project according to the specifications established by an engineer working in the field. For Polytech, these projects validate the body of technical and managerial competencies acquired by students during their years in our programme. For our industrial partners, the students’ projects permit them to test systems, confirm new ideas, and create prototypes, among other valuable research outcomes. Publishing a yearbook that brings together in one volume the overviews of all fifth-year industrial projects is a concrete way of presenting the entirety of the fields of activity in which graduate engineers of Polytech Orléans will work. It is also a way for our business partners to evaluate the assistance which Polytech can bring to them. Our ambition is to highlight the achievements realized in collaboration with businesses and institutions and to encourage development of new industrial partnerships. Christophe Léger Director, Polytech Orléans For further information: Direction des Relations Entreprises, Stages, Innovation, Formation continue 12 rue de Blois, BP 6744, 45067 Orléans cedex 2 02 38 49 48 48 relations.entreprises.polytech@univ-orleans.fr POLYTECH ORLEANS ECOTECHNOLOGIES | 9 Ecotechnologies POLYTECH ORLEANS 10 | STUDENT PROJECTS CATALOGUE 2013/14 2D+ image viewer Optoelectrical engineering Alexandre CHAVANON / François GARNIER Academic supervisor: Rodolphe WEBER Industrial supervisor: Jean-Marie BOURVEN Company: SARL The Cameroscope Second Place 7th Annual Final Year Projects Forum Objective/motivation The 2D+ pictures viewer project proposed to project on an embedded screen anaglyph images taken with only one camera to give them a rendering similar to 3D, with or without color glasses. We have been working on this project since April, 2013. There are two types of processes to create anaglyphs: > The first one consists of taking a picture with a camera > The second one consists of taking two different pictures with two different cameras. Our system is innovative because it allows taking anaglyphic pictures with one camera but the images taken with it contain more information than the classical one. Results From a technical point of view, this project is divided into two distinct parts (study and implementation of the imager and programming interface of the display). The optical part has been advanced; to date, the imager is functional and communicates via wi-fi network. For the programming part, we validated a development platform which allows creating a man/machine interface, which can be used on network. To conclude, even if all the objectives of the project could not succeed, we validated the milestones that we set with our client for the overall project, into which we have integrated the final project study. Furthermore, we have validated the ability to implement an adaptive man-machine interface, and we also validated the decision 2D + video streaming. Keywords: 2D+, anaglyphs, innovation, embedded system Contact: alexandre.chavanon@etu.univ-orleans.fr; françois.garnier@etu.univ-orleans.fr POLYTECH ORLEANS A. Chavanon F. Garnier ECOTECHNOLOGIES | 11 Ablation of silicon and titanium oxide with picosecond and nanosecond pulsed laser in air at atmospheric pressure and under vacuum Materials Abdelbassat EL MOURABIT / Christophe LE QUÉRÉ Academic supervisors: Éric MILLON and Agnès PETIT Company: GREMI Laboratory Objective/motivation Pulsed UV laser ablation as a universal tool for surface processing of materials such as organic polymers, inorganic crystals and composite substrates. Because of this wide variety of materials, it is evident the ablation behavior and the dynamics of the removal process depend strongly on the material’s properties and the parameters of the laser pulse. The aim of this work is to present the effects produced by laser pulses absorbed by a solid target (titanium oxide and silicon). The influence of laser pulse number, matter properties and pulse energy and depth ablation were investigated, and all experiments were carried out in air at an atmospheric pressure and under vacuum. The ablation characteristics of the two solid targets were observed and analyzed with the optical microscope and profilometer in order to compare the efficiencies ablation in picosecond and nanosecond regions. Results The ablation depth increases in function of the fluence, and the results indicated that differences in surface morphology begin to occur at 1 mJ/cm² for the titanium oxide and also for the silicon. The comparison of the ablation curves measured in ambient atmosphere and under vacuum demonstrates that maximum rates were obtained in vacuum with the silicon in the picosecond laser (333% more than ambient atmosphere). But with the titanium oxide we obtained the maximum in the air under ambient atmosphere (33% more than under vacuum). Also, the impact area and the depth of ablation increases in function of the pulse number for the two materials studied, either with the picosecond or nanosecond laser, except that the impact area is larger with all experiments which were carried out in air at an atmospheric pressure than under vacuum. Ablation of silicon with optical microscope Keywords: nanosecond laser, picosecond laser, thermal effects, ablation Block diagram of experiment Typical central crater profiles after ten KrF laser pulses Accumulation curves of titanium dioxide - air and vacuum Ablation curves of silicon - air and vacuum Contact: abdelbassat.el-mourabiti@etu.univ-orleans.fr; christophe.le-quere@etu.univ-orleans.fr POLYTECH ORLEANS 12 | STUDENT PROJECTS CATALOGUE 2013/14 Acquisition of analog signals on computer system Electrical engineering Benjamin FINOT Academic supervisor: Philippe RAVIER Industrial supervisor: Stephane BELSOEUR Company: Delphi Objective/motivation This project is in partnership with Delphi, an American multinational corporation that specializes in design and manufacture of equipment for the automotive industry. It aims to acquire and display on computers the voltages from sensors on a car engine. These sensors send variable analog voltage signals, representative of physical quantities. They are converted into digital signals and processed by the car computer. All this information allows for good engine management. This project will compare the results with those provided by the VCI (Vehicle Communication Interface). For convenience, the signals are synchronized and the information from the two systems will be visible on the same computer. Results The project was divided into four parts: adaptation signals, processing and digitization of signals, sending and receiving data on the computer, and data mining. Board adaptation reduces the signal amplitude, so it is proportional to adapt to the conversion board. The signals are then digitized by an Arduino. It sends the result of conversions via USB to a computer. Small software was programmed to visualize in real time the temporal evolution of signals. It is in the form of a window composed of six graphs, allowing visualization of six inputs. Keywords: automobile, embedded electronic, signal processing, human-machine interface, arduino Arduino Mega Contact: benjamin.finot@etu.univ-orleans.fr POLYTECH ORLEANS Overall scheme GUI ECOTECHNOLOGIES | 13 Bluetooth data logger Electrical engineering Maxime AVRIL Academic supervisor and Industrial supervisor: Jean-Yves CADOREL Company: CRESITT Objective/motivation CRESITT’s main research is on communicating electronic systems and instrumentation. Customers want to be able to communicate with all home devices through one of them. The equipment which almost all of us have is a smartphone. To do that, either we add components or use included wireless features. For the latter, we can use infra-red, but the devices must be face-to-face. Wi-fi is efficient although it consumes a lot of energy, so Bluetooth is the most adapted solution. The aim of the project is to make a data logger which allows a smartphone to display data from an analog signal. It consists in creating an Android app able to get data sent by wireless. The project will be used to evaluate the transfer capacity of Bluetooth. Results The feasibility study indicated that there are two ways to send data by Bluetooth. A destructive way consists of compressing data before sending them. The advantage of this first way is to send data in real time. The second way allows sending the totality of signal data, but it’s impossible to do this in real time. It must save data in memory components and then send it by Bluetooth. Because of the duration of the project, the first method was chosen. The system is composed of an RN52 Bluetooth audio module including an A2DP Bluetooth profile, used to stream high quality audio from one device to another. It was necessary to add an analog-to-digital converter between the input signal and the RN52. To finish, there is an Android smartphone with the app made. Signal frequency was reduced to be able to be sent in real time. Keywords: data logger, bluetooth A2DP, smartphone, JAVA Contact: maxime.avril@etu.univ-orleans.fr POLYTECH ORLEANS 14 | STUDENT PROJECTS CATALOGUE 2013/14 Broadband absorption spectroscopy in a tig arc plasma Electrical engineering Jérémy CAUDRON Academic supervisor: Jean-Marc BAUCHIRE Industrial supervisor: Hervé RABAT Company: GREMI Laboratory Objective/motivation The aim of the project is the detection of absorption phenomena in a TIG arc plasma. The use of optical absorption spectroscopy technique by testing two light sources broadband (a commercial one and another called Z-pinch and developed by the GREMI Laboratory) has been suggested for this project. The operating parameters will be determined for which the absorption spectroscopy is perceptible. In the most favorable case, we shall determine a field of temperature of the plasma by the Boltzmann method using several measurements all along the plasma. Results The system is composed of a light source (the one which will be absorbed), an optical path to collide light in a very tiny focused point in the plasma of the TIG arc, a spectrometer and an ICCD camera to save spectra and to treat results after experimentations. The technique employed needs a perfect optic alignment and a good knowledge of the material used to avoid aberrations when spectrum will be saved. Once spectra are acquired, a software created with MATLAB detects peaks and allows the fit with Gaussian or Lorentzian functions. Then, the Boltzmann method is employed to calculate a field of temperature of the arc. Keywords: optics, absorption, spectroscopy, plasma, electric arc Absorption spectra Optical schematic Contact: jeremy.caudron@etu.univ-orleans.fr POLYTECH ORLEANS Map of measurements Boltzmann diagram ECOTECHNOLOGIES | 15 Capturing of ethernet flow Ecotechnologies Romain DACLIN Academic supervisor: Meryem JABLOUN Industrial supervisor: David PARDESSUS Objective/motivation In an ideal world, all people would speak the same language. So in electronic and informatics, in an ideal world, all systems use the same protocol and they can be connected together. Today in informatics we use Ethernet to connect PCs together. Thales Air Systems also wants to use Ethernet to connect some electronics systems together. We must develop our Ethernet application on Linux. Results The project consists of understanding an open-source library for packet capture named Libpcap. We need to install it and check if it runs well. After, we want to capture Ethernet packets and visualize them on the terminal. When we are able to capture all packets from Ethernet, we need to apply some filters to select only the interesting packets. To finish, we should save the data on files. Keywords: libpcap, ethernet, linux, packet, filter Contact: romain.daclin@etu.univ-orleans.fr POLYTECH ORLEANS 16 | STUDENT PROJECTS CATALOGUE 2013/14 Deep etching of silicon through SiO2 thin film by using cryogenic method Electronic engineering Xiao LIU Academic supervisor: Thomas TILLOCHER Company: GREMI Laboratory Objective/motivation Plasma etching could provide high integration level, high accuracy for dimension control and low chemical costs. It is essential to the field of micro technologies. Silicon etching is used in microelectronics like CMOS technologies, Integrated Circuits; MEMS (Micro Electromechanical Systems) and Optoelectronics like LED, laser diodes and so on. The goal of this project is to etch silicon masked SiO2 as deep as 400um while the width of holes change from 62um to 250um. The so used plasma should reach the following requirements: a high etching rate, a best selectivity between the material and mask, a strong reduction of lateral etching and little damage on profiles. Results The gas of SF6, SiF4 and O2 were used to etch silicon, volatile species (SiF4, SiFxOy) were formed and exhausted by pomp system. During this project, 36 manipulations were realized in cryogenic condition and analyzed by SEM (Scanning Electronic Microscopy), by changing different parameters like oxygen flow, temperature, pressure in the plasma chamber and bias, a profile with a depth of 414um was reached at the holes of 250um with a high aspect ratio. Furthermore, it serves for the miniaturization of individual transistors, enhancement of device densities and computing speed, and decreasing energy consumption and cost. Keywords: nanosecond laser, femtosecond laser, micro-machining, drilling, cutting Holes of width-250, 125, 62, 62um; depth- 416, 363, 306, 225um Contact: xiao.liu@etu.univ-orleans.fr POLYTECH ORLEANS ECOTECHNOLOGIES | 17 Development of highly specific surfaces by cryo-etching process Production engineering Ke ZHANG Academic supervisor: Rémi DUSSART Objective/motivation First Part: Researched the variation of the speed of etching of silicon by plasma of SF6 using a laser interferometer in different conditions of pressure in the plasma reactor. The experiment will be realized in different conditions (different supports of the samples, different temperatures of the samples). The results of the experiment is to give experimental evidence for the research of the process simulation. Second Part: Researched the factors in a Micro-Structure Columnar formation process. Realize the MSC by plasma cryo-etching process. Obtain expectation results (certain height and diameter of the micro columnar) by controlling the factors in the process. Test the reproductivity of the experimental results. Results First Part: Realized experiments and obtained the expected results. The approximate function of variation of the etching speed by pressure was drawn in three different conditions. All the data in the experiments was obtained by a Picometer and the results were processed by Matlab. The reliability of the results was verified by using a Scanning Electron Microscope. The End point detection for plasma etching by interferometer Plasma reactor and etching mechanism Second part: Understood the factors in the process. The optimal condition of fabrication was chosen and was put in experiment production. The reproductivity was verified in repeated experiments by a justifiable process control. An expected result was obtained. Keywords: interferometer, plasma cryo-etching, silicon, microstructure A picture of the black silicon taken by SEM in the GREMI lab Contact: ke.zhang1@etu.univ-orleans.fr POLYTECH ORLEANS 18 | STUDENT PROJECTS CATALOGUE 2013/14 Raspberry Pi print system Electrical engineering Yunlong FENG Academic supervisor: Aladine CHETOUANI Industrial supervisor: Christophe KLEY Company: MAQUET Objective/motivation The aim of this project is a program for the protocol to connect between raspberry pi and a printer. Actually we need to make Raspberry Pi work as a printer server so that it could receive the data from Flow-I (anesthetic equipment). My client is MAQUET, an international company, a medical equipment manufacturer. The printer type depends on Maquet’s client, and the type of printer might be quite variable, so we should find a way to make it more compatible. Results We used Ethernet cable because the attenuation via RJ45 cable is less than with USB cable, and we also were able to send the print job via wi-fi. For the tele-operation, we installed the Putty and VNCsever to meet the client’s need to start up Raspberry pi without monitor, and tele-command by SSH protocol. This protocol has a high level of security and a simple structure. For the moment, we have not finished the automatic print but we have several ideas: program a scrip under C++ or python to reach monitoring USB device and then send a command to find the target file in key USB, finally sending print job via CUPS. We could continue this functionality in further works. Keywords: Raspberry Pi, flow-i, printer, embedded system Contact: yunlong.feng@etu.univ-orleans.fr POLYTECH ORLEANS ECOTECHNOLOGIES | 19 Energy enhancement project: high-bay warehouse lighting Energetics Joel ROESSNER Academic supervisor: Rodolphe WEBER Industrial supervisor: Vincent LIESS Company: Cosmeurop Objective/motivation The price of energy will soon increase and lighting costs will be more and more important. That is why, today, it is necessary to think about how to save energy. Warehouses are usually very long and high. Lighting costs are very significant compared to the activity’s added value. Today, a lot of lighting solutions exist, but choosing the most efficient one requires analyzing all specifications in detail, and high-bay warehouse in particular. In addition to cost saving, current lights are more ecological and this contributes to enhancing the company’s image. Renewing its lighting installation contributes to sustainable development. Results There are several possibilities for lighting, and among the different possibilities we must choose the most efficient one rigorously. For high-bay lighting, LED lights are a solution, but choosing low-cost lights coming directly from China is not a good choice. Indeed, it is important to evaluate the lifetime running costs and low-cost products are often badly designed and produced. The study revealed that it is sometimes more attractive to buy more expensive products from main lighting manufacturers, as these products carry a lifetime warranty and provide real efficiency. Return on investment is also a good indicator of the product’s efficiency. An LED rail lighting system with motion management is the most efficient product for Cosmeurop’s high-bay warehouse. Keywords: lighting, energetics, LED, high-bay Cosmeurop’s high-bay warehouse 3D view False colours rendering Contact: joel.roessner@etu.univ-orleans.fr POLYTECH ORLEANS 20 | STUDENT PROJECTS CATALOGUE 2013/14 Femtosecond and nanosecond laser micro-machining Production engineering Florian Pallavidino / Benjamin Seeli Academic supervisors: Chantal Leborgne, Sostaine Kaya Industrial supervisor: Nadjib Semmar F. Pallavidino Company: GREMI Laboratory, Lasoptic, Spectra-Physics Objective/motivation Industrial innovation project is the punch line of five years of engineering studies at Polytech Orleans. The students are confronted to all the requirements of the engineering profession. In order to compare the techniques of cutting, drilling, selective ablation, two types of laser machining have to be used: nanosecond and femtosecond laser. Furthermore, routines have to be identified for each material to select best parameters and provide them in summary documents. Each study is monitored between tutors and students to validate all the elements to be transmitted, thereby to acquire rigor and expertise. Presently, all sectors of the industry are or will be working with laser technology. More complex applications have also been developed and have been the subject of our studies. We have been able to treat the phenomena of contact angles to characterize the wettability of materials. B. Seeli Results The results of this project can be qualified as mixed. Indeed, we encountered specific problems to the industry. Laser failures, power problems, burnt lens etc. To solve these, a significant maintenance works had been put in place in order to progress in the project. A comparison between both techniques has been established in order to find the best parameters. Each process has strengths and weaknesses and that’s why it was important to define search result expected with societies in partnership. The biggest part of this project has been conducted on the contact angles and more precisely on the wettability. We achieved to go from the hydrophilic to the hydrophobic state of PET. Research done could prove the relation between the texturing surface and hydrophobicity on PET by laser nanosecond is not linear. Presently, these results can’t be compared with studies on femtosecond laser due to its dysfunction. Keywords: femtosecond laser, nanosecond laser, micro-machining Non treated PET - Hydrophilic Nanosecond laser Femtosecond laser Contact: pallavidino@yahoo.fr; benjamin.seeli@gmail.com POLYTECH ORLEANS Treated PET - Hydrophobic ECOTECHNOLOGIES | 21 Informative website for a new student at Polytech designed for nomad devices Computer science Antoine CHARVIN Academic supervisor: Aladine CHETOUANI Industrial supervisor: Rémy LECONGE Institution: Polytech Orléans Selected participant 7th Annual Final Year Projects Forum Objective/motivation This informative website is specially designed for nomad devices, which means that it adapts itself to the size and/or the orientation of the device (smartphones or tablets). The design developed in order to adapt the website itself is called “responsive web design”. As the website would be used by new Polytech students, it contains some essential information about Polytech Orléans, the University of Orléans and the city of Orléans (how to find an accommodation with the CROUS, the internships at Polytech, tram maps, etc.). Results This website was conceived to make maintenance easier; indeed, all the textual information on the website is separated from the design part (CSS files) and from the development part (PHP files). This information is stocked in different XML files which are more readable for computer science beginners. This informative website had to be intuitive and a little bit dynamic in order to be used by the students. For that, this website is developed with PHP and JavaScript for the dynamism: smooth scrolling, link between XML and PHP, interactive maps of the buildings. The website had also been tested by a small group of students for the last modifications and for testing the website’s compatibility on multiple devices. Keywords: computer science, website, responsive web design, new students, Polytech Orléans, Orléans, University of Orléans Contact: antoine.charvin@etu.univ-orleans.fr POLYTECH ORLEANS 22 | STUDENT PROJECTS CATALOGUE 2013/14 Micro-thermoelectric generator Electronics optics engineering Khalid SNABI Academic supervisor: Omar ABESS Company: GREMI Objective/motivation Every time we talk about energy, we believe in the possibility of diminution loss, or the use of green energy that does not pollute, and the use of inexhaustible sources such as wind, solar and thermal heat. The aim is to create a micro-generator that will convert a temperature difference into electricity. To achieve this, we had two ideas. The first is based on porous silicon that had approved thermoelectric characteristics, and the second is based on the alignment of thermocouples (sequences of N-type and P materials) on the front side of a sample and (interconnect to allow the passage of electrons) through conductive metals such as aluminum. The first step is to perform the various depositions and etchings of the samples, and make thermoelectric tests and microscopic viewings. Results The first idea is still in the process of development. We took a sample of porous silicon and made a deposit of metal on all four sides (tungsten and aluminum), to improve electrical contact of our meter. We considered making a deposit of a third metal, so that comparison could be made between the metals used. The second idea took a lot of time to confirm because we had to think about designing a simple, inexpensive mask. We began by drawing masks on paper, and after confirmation of the design, transferred it to the computer. This mask was performed on the single material possible found in the lab ‘Mika’. The design was done by a nanosecond laser. This last idea is almost finished but there remain two deposits to make and tests to conduct. Keywords: micro-generator, thermoelectricity, seebeck coefficient, porous silicon Contact: khalid.snabi@etu.univ-orleans.fr POLYTECH ORLEANS ECOTECHNOLOGIES | 23 3D printing Production engineering Gary HINAULT / Benjamin NOËL Academic supervisors: M. CANALS, M. AUFRERE Institution: Polytech Orléans G. Hinault Selected participant 7th Annual Final Year Projects Forum Objective/motivation The goals of the project are : > Find innovations with the printer (replicate an object combining with 3D scanning) > Functional checking (to get all finished pieces) > Settings of the printer > Ensure that the project is fully open to facilitate future improvements > Technical improvements to have a demonstrator for Polytech (spool holder, setting systems) > Print the Polytech logo to show several types of objects B. Noël Results We built an open source printer which is working and fully customizable. We also made an amount of calibrations and tests as well as parts to show the possibilities of the 3D printer. We also looked at the 3D scan of an object in order to increase the possibilities of the printer. Keywords: open source, costuming, rapid prototyping, replication Contact: benjamin.noel@etu.univ-orleans.fr POLYTECH ORLEANS 24 | STUDENT PROJECTS CATALOGUE 2013/14 Refurbishment of dye laser Photonics engineering Mélanie URIEN / Nicolas VIOLET Academic supervisor: Titaïna Gibert M. Urien Company: GREMI Objective/motivation The project aim is to renovate a dye laser which must be able to emit all wavelengths to be used to make optical diagnostics of plasma with a UV beam. For that, the laser had to be cleaned and the operation of the suppliers and the dye pump checked. Then, a few lasing tests and laser coupling with a Nd: YAG pump laser were done. The laser which had to be renovated was the TDL50. It had not been maintained for a time, which is why some components malfunctioned or were damaged. The PDL-2 was the second laser which had to be renovated to replace the TDL50, which is very similar. Finally, the last experiment was made with a device composed of a HeNe laser (red color) so as to emit an orange laser beam. Results For the first laser, the main problem was the pump sealing. Most of its components were defective and leaky. In addition, the grating was damaged and was too expensive to replace. Consequently, we decided to keep this laser only for its components. For the second laser, the entire device was renovated, all optics were aligned and we made a dye from solid rhodamine which allows the beam to be amplified. The laser was coupled with an Nd: YAG which brings energy to excite the dye which will finally emit a UV laser beam at the output. But the average power was not sufficient because the power of Nd: YAG was three times lower than required. For the third laser, even after following instructions, the orange beam was not achieved. Keywords: dye, laser, photonics WEX-1 closeup Contact: melanie.urien@free.fr; violet.nicolas@laposte.net POLYTECH ORLEANS PDL-2 closeup Dye laser operation N. Violet ECOTECHNOLOGIES | 25 Studies of epoxy resins stability used for final packaging in industry Electrical engineering, materials Clément Boutoille Academic supervisor: Eva Kovacevic Company: ST Microelectronics, GREMI Objective/motivation The environment has a big impact on the choice of which type of resin is best to encapsulate components and optimize their life. For more than ten years, different types of laboratories have worked on this subject by using measurement of the dielectric properties of resins to make the best choice of resin. Today, ST Microelectronics is interested in this type of research and needs to know which resins are best under which conditions. For nine weeks, I studied the resins to determine their comportment in different climates. To test the resins, the GREMI Laboratory, in collaboration with the College of Science of the University of Orléans, invested funds in a new impedance meter. Results This work was divided into three parts. In each study, the first part was the bibliography, study of the subject and the theory about all the manipulation. In the second part, I worked on epoxy bulk resin samples, which were provided from a carrot of epoxy resin. I took all the dielectric factors of the bulk, with an old device which was calibrated, and created a reference for all my work. All the results of the climate studies were forced, which means creating humidity on the resins, and immersing them in water to absorb everything that they could. All my results were presented as Excel® columns and graphs, to exploit them and create a model of which resins we used in which climate. Keywords: epoxy resin, dielectric constant, aging process, research, detection Example of dielectric component Contact: clement.boutoille@etu.univ-orleans.fr POLYTECH ORLEANS 26 | STUDENT PROJECTS CATALOGUE 2013/14 Water curtain light Electrical engineering Quentin AILLOUD / Juliette TRIGOSSE Academic supervisor: Titaina GIBERT Selected participant 7th Annual Final Year Projects Forum Institution: Polytech Orléans Objective/motivation The water curtain light is a resumption of a project started one year ago. The aim of the water curtain project is to display messages and characters in an innovative way. The system will be used during the Open House and exhibitions of Polytech Orleans to promote the engineering school. The principle of the water curtain is to control 20 solenoid valves through an electronic card. Thereby, the solenoid valves could or could not allow the fall of the water, according to the shape of the letters wanted. In addition, the hydraulic system must be in a closed loop in order to avoid water waste. The water curtain is constantly supplied by a water pump which brings back the fallen water and re-injects it into the solenoid valves. An LED lighting system will guide the light through the water, as it would for an optic fiber. Results The first step was to increase the definition, by adding ten solenoid valves to the 10 already included in the device. The entire electronic part had to be re-adapted to become a switch which can turn the 20 solenoid valves on or off. The electronic card was controlled by an Arduino card linked to software which can program every desired shape. Another electronic card was developed to control the flow and the power of the pump to avoid damaging the solenoid valves through excessive pressure. The next step could be to create an Android application to allow people to choose the letter or character that the water curtain would display. Keywords: water curtain, electronics, arduino, pump, solenoid valves Principle of the system The water curtain P of Polytech The arduino system The solenoid valves Contact: quentin.ailloud@etu.univ-orleans.fr; juliette.trigosse@etu.univ-orleans.fr POLYTECH ORLEANS Q. Ailloud J. Trigosse ECOTECHNOLOGIES | 27 Water treatment by plasma Environmental engineering Marine Boulanger / Marc-Edouard Rybinski Academic supervisors: Olivier Aubry, Stanislas Sizaret Institutions: Polytech Orléans, GREMI M. Boulanger Selected participant 7th Annual Final Year Projects Forum Objective/motivation The mining industry is one of the largest consumers of water. Mines can contain groundwater. This water is pumped outside the mine but it cannot be used because of toxic acidity and heavy metals. The aim of this project is to find the best settings on a DBD plasma reactor in order to reduce the iron concentration in a water sample. When iron starts to make aggregates, it absorbs other hazardous elements like arsenic. Our target is to make water clean enough to be used in agriculture. If it works, this technology will interest countries with water shortage but also mining companies. Indeed, the annual capital expenditure on managing this water is currently in the region of $7.7 billion, although it is expected to grow to $13.6 billion by 2014. M-E. Rybinski Results The first part is to install the plasma reactor and optimize parameters. The second part is to characterize the plasma reactor with pure water, then find a treatment for water with 500mg/l of dissolved Iron which is similar to water from mines. To get a result, we had to find a set of parameters. Settings are: discharge voltage, interelectrode distance, gas composition, frequency, signal waveforms. Each sample is analyzed with a pH meter, a conductivity meter and a spectrophotometer. After 25 tests with clean water and 25 tests with polluted water, some settings are seen to be significant in water treatment. For example, with higher electric voltage, iron makes aggregates faster. Keywords: plasma, water treatment, research, mine water, spectrophotometry The plasma reactor Streamers Iron aggregates after plasma treatment Contact: marine.boulanger@etu.univ-orleans.fr; rybinski.marcedouard@yahoo.fr POLYTECH ORLEANS CIVIL ENGINEERING | 29 Civil Engineering POLYTECH ORLEANS 30 | STUDENT PROJECTS CATALOGUE 2013/14 Study of the degradation of fluorescent tracers under natural conditions Environmental engineering Olivier DESMETTRE / Virgile VACELET Academic supervisor: Christian DEFARGE O. Desmettre Company: CETRAHE Objective/motivation This is a new project created by the CETRAHE at Polytech Orleans due to the need of some companies like ANTEA or EDF. The final goal of this project is to find the effects of different parameters like temperature, pH, and light, effect of chlorination or sorption on fluorescent tracers. Another goal of the study is to improve the results made by previous researchers by quantifying the effect of the parameters previously quoted. Results Due to some restrictions on time and means, the main parameters studied are luminosity and temperature. These effects were studied on four common tracers which were fluorescein, eosin, sulfurhodamine B and naphtionate. The first result shows that fluorescein and eosine are degraded very quickly by luminosity. Indeed, less than a week at natural luminosity is sufficient to degrade all the tracers. However, temperature has a very low impact on these tracers. Concerning sulfurhodamine B, the result shows that luminosity has a much smaller impact on fluorescein and eosine. The main parameter which has an influence on sulfurhodamin is temperature. Indeed, the activity of sulfurhodamin decreases significantly at high temperature (40°C) compared to low temperature (4°C). The effect on naphtionate is quite the same as the other tracers: a decrease when exposed to luminosity and high temperature. Nevertheless, the kinetics is less important. Keywords: degradation, tracers, natural condition In the daylight In the dark Contact: olivier.desmettre@etu.univ-orleans.fr; virgile.vacelet@etu.univ-orleans.fr POLYTECH ORLEANS V. Vacelet CIVIL ENGINEERING | 31 Balance of operation of a methanation unit Environmental engineering Mariana Reis / Margot Touron Academic supervisor: Lydie Le Forestier Industrial supervisors: Christian Coursier, M. Gardoni Company: Gâtinais Biogaz M. Reis Selected participant 7th Annual Final Year Projects Forum Objective/motivation One of the objectives of this project is making methanation and its principle clearer. At the beginning we had just a global vision of the management of waste, and methanation is a specific technical way which treats and valorizes waste. With a view to making the project more concrete, we studied a real local unit named Gâtinais Biogas. The particularity of this unit is that the owners are all farmers who would like to treat and valorize the organic waste from their farms. Our objective is to provide a technical analysis of the operation. One interesting point for us is that the unit just started last winter so there are still a lot of aspects which can be improved. Moreover, the topic of methanation will become more and more important every day because it is a source of green energy and also one way to treat a part of waste. M. Touron Results In the first place, we tried to do the carbon balance of the exploitation thanks to a table of ADEME we found. However, we did not have enough data and the table was too complex so we didn’t know how to complete that. We decided to abandon the balance of carbon to focus on other tasks. After that, we started the mass balance based on the data that Gâtinais provided us on the day of the visit. We used the data of the year 2013, twenty nine weeks in all. The mass balance permitted us to notice that the production of gas was not constant during the seven months analyzed but the real production was always greater. We tried to find out the explanation for this discrepancy, but could not find a concrete solution. We decided to look for other companies to supply Gâtinais with solid organic waste and chart them on a map. We found more than 20 companies which could be future clients. Keywords: methanation, solid waste, valorization of waste Comparison between the real production of methane and the prediction The global operation of a methanation unit Map of companies which can be future clients Contact: marireis08@gmail.com; margot.touron@etu.univ-orleans.fr POLYTECH ORLEANS 32 | STUDENT PROJECTS CATALOGUE 2013/14 Calculation of reinforced concrete structures (design the foundations of a building) Civil engineering K. Bethi Kamar BETHI / Fatou FALL Academic supervisor: Marwen BOUASKER Objective/motivation Our project consists of dimensioning foundations of a five-floor building for residential use. This will require first an estimation of loads that will be applied to the foundations via a pre-design (with a plan of work and a descent of loads over the foundations). In this project we will first define the supporting structures and their positions and the type of foundation. Then we will do a load descent on the foundations which will enable us to dimension them respecting the allowable stress of the soil, thanks to the geotechnical report (which enables us to know the allowable stress of the soil and the type of foundation recommended). Results To design the foundations of this building, we first defined the supporting structures of our building as well as their positions. Next, we did a pre-dimensioning thanks to the calculation formulas given in Eurocode 2 rules. After that, we did a manual descent of loads. Then, we made a 3D model using the software Robot structural Analysis that helped us verify the estimation of the burden that is applied to the foundations. And finally, we started the calculations for the design of the foundations. We worked on many kinds of foundations to find the foundation that would ensure the stability of the building. Therefore, adapting to the mediocre quality of the soil, we recommended the use of a concrete sheet piling as an interface with the soil that will surround the building and deep foundations to support the column load. Keywords: design, loads, soil, stability Project schematic Contact: kamar.bethi@etu.univ-orleans.fr; fatou.fall1@etu.univ-orleans.fr POLYTECH ORLEANS F. Fall CIVIL ENGINEERING | 33 Characterization of recent artificial lacustrian filling Environmental engineering Adeline RENTÉ / Nicolas SOUDAN Academic supervisors: Emmanuel CHAPRON, Claude LE MILBEAU, Mikaël MOTELICA Objective/motivation We are students in Geosciences and environment and in our fifth year at Polytech, we worked for one week on the characterization of sediments in the Loiret. But one week was a very short time to understand this whole activity so we decided to extend this experience with our final project. Moreover this research is related to actual problems since the European Water Framework Directive (WFD) supposes for the member states the establishment of an action plan in order to restore the ecologic continuity of aquatic environments. This ecological continuity is highly impacted by the presence of dams or other rather “small” transversal constructions on the rivers (around 60,000 in France). Moreover, French law, for this directive, plans to destroy or reduce most of these structures. But before the national application of this plan, studies must be done regarding the impact of the destruction of these constructions, for instance on the resuspension of the sediments and their influence on water quality or ecosystems. It is in this inspection part that our project takes place. A. Renté N. Soudan Results Our problem was to find a better way to characterize sediments in artificial lakes. We did several complementary experiments to determine the age of sediments, their composition and the effects of catchment basin inputs. We took part in several experiments like ICPMS (Inductively Coupled Plasma Mass Spectrometry), grading, etc. We created a new process, approved by our academic supervisors, for magnetic susceptibility, improved the palinofacies analyses by using catchment samples, and improved age approximation by the detection of drug residues. Keywords: sediment, artificial lake Contact: rente.adeline@gmail.com; nicolas.soudan@etu.univ_orleans.fr POLYTECH ORLEANS 34 | STUDENT PROJECTS CATALOGUE 2013/14 Design and calculation of temporary piers on a metallic bridge Civil engineering Alexandre DE ALMEIDA / Yacine ETTAKHCHI Industrial supervisor: Stéphane PAUVERT A. De Almeida Company: Baudin Chateauneuf Objective/motivation After taking into account all the external forces acting on a metallic bridge, and also taking into account the components already used by the company Baudin Chateauneuf, we made a note of the calculation following the Eurocodes standard of temporary piers. These piers are used for a metallic bridge launching. This calculation note will be configurable. Then we will find a range of use (height, vertical and horizontal loads, wind load, etc.). Finally, we will create a working curve for each pier created, and compare them to those that already exist. Results We decided to create three diferent models: fifteen-, ten- and seven-meter high temporary piers. Our three models were inspired by some models that have already been used in the past by Baudin Chateauneuf on other worksites. We made a list of all the loads which are effective on each one. We then did the wind and load calculations following the Eurocodes standard. After the calculation step, we established a model of each pier on the Robobat software (CAD software); we put all the loads. Afterwards we checked how the structure we established resisted the loads, and we optimized the structure in order to be strong enough. Finally, we created an Excel® file which includes a chart with three curves. Each one symbolizes the working curve of each pier. Keywords: metallic bridge, pier, calculation, design A Pier used in a worksite in Toulouse Our three models of pier Working curves for each pier Contact: alexandre.de-almeida@etu.univ-orleans.fr; yacine.ettakhchi@etu.univ-orleans.fr POLYTECH ORLEANS Y. Ettakhchi CIVIL ENGINEERING | 35 Design and drawing of the restoration of a county road crossed by high rail line Civil engineering Nicolas DONEY / Cédric PLESSIS Academic supervisor: Jean-Marie SHAFF Industrial supervisor: Jeremy LUCY Company: IRIS Conseil N. Doney Selected participant 7th Annual Final Year Projects Forum Objective/motivation We are currently in our fifth year of studies, majoring in public works, which is why we chose the project with Jean-Marie Schaff to create the drawing of a departmental road which is crossed by the LGV SEA (Sud Europe Atlantic) train. For this project, we used the software GeoMacao. We had already completed a project on the GeoMacao software in our fourth year, which is why we chose to deepen our knowledge of this useful software. Futhermore, we are motivated by the fact that this case is real and is in partnership with a famous engineering office. C. Plessis Results First, we studied the specifications for this project. We made choices about the connections of the rural roads of the departmental road 97 and how we could perform these connections. Furthermore, we decided where and how the departmental road was put under the high-speed train line. After having traced the road on the software GeoMacao according to the rules of road alignment, we developed hydraulic structures for the evacuation of water. In order to achieve this, we conducted a sizing calculation. Finally, we created the structure of the ground with these different layers. Keywords: LGV SEA, departmental road 97, Geomacao, road design, bridge Contact: nicolas.doney@hotmail.fr; cedric.plessis@etu.univ-orleans.fr POLYTECH ORLEANS 36 | STUDENT PROJECTS CATALOGUE 2013/14 Design of a three-dimensional modular construction in wood Civil engineering Quentin ABSOLONNE / Arnaud GILLOT Industrial supervisor: Hartmut HERING Q. Absolonne Company: hhconseil Objective/motivation The aim of our project is to design a three-dimensional module in wood. Modules are completely prefabricated and are adapted to different uses and different target populations such as students, families or elderly persons (we can also think about emergency constructions in case of disaster). We understand the many advantages that prefabrication provides in comparison with the classical “onsite worksite” with the worker as part of a neighborhood point of view. Our project allowed us to learn about and understand CLT technology, which is innovative and has a promising future in the construction field. It is really competitive within the concrete industry, which is currently outdated and ecologically highly questionable from an environmental point of view. We provided a thermal study of our module to ensure a minimum use of fossil energy sources, using renewable ones instead. Results Prefabrication provides many advantages such as the increased speed and precision of production and the care taken by the main workers. Offsite construction allows for work in a comfortable position in a dry, organized and dust-free environment. Neighborhoods are less disturbed thanks to the speed and the low profile of completion on the worksite (installation time, noise and truck traffic is reduced to a minimum). A complete mechanical analysis of our structure has been carried out (dead-weight, loads, earthquake, wind/snow resistance) using the Eurocodes. We have also shown that CLT elements are much more resistant than concrete under an identical load. We have compared many insulation materials and different configurations to optimize the installation of our structure in order to provide maximum free solar energy flow inside the building and a minimum loss through thermal bridges. Keywords: timber engineering, CLT, three-dimensional module Contact: quentin.absolonne@etu.univ-orleans.fr; arnaud.gillot@etu.univ-orleans.fr POLYTECH ORLEANS A. Gillot CIVIL ENGINEERING | 37 Design of a wooden bridge for pedestrians and cyclists over the Loire River Civil engineering Alexia Miceli / Julie Repusseau Academic and Industrial supervisor: Hartmut Hering Company: hhconseil A. Miceli First Place 7th Annual Final Year Projects Forum Objective/motivation For our industrial project, we made the choice of an innovative topic to allow us to complete our training. Our group was composed of two civil engineers in the sustainable construction option, with a concentration in building construction. Even though ours was a virtual project, the design of a 510 meter span wooden bridge for pedestrians and cyclists over the Loire river, including its construction system, required us to adapt to a building technology that we did not approach in our training and which broadened our expertise. We took into account social, environmental and economical development aspects, as well as safety, engineering, material choices and building techniques, in order to develop a complete and responsible offer. In addition, our project tutor assumed the role of client, just as would be an urban agglomeration. Our approach was designed to be as close as possible to reality. J. Repusseau Results The development of soft modes of mobility within the city of Orleans is very important for its urban development. That is why we decided to set our bridge in the city center, between the “Pont RenéeThinat” and the “Pont George V”. After much research, we decided to go for a cable-stayed bridge. This type of bridge is relatively low-cost, adapts easily to all kinds of geological conditions and its span can be very wide. With regard to regional economy, we selected two types of wood widely available in France: douglas fir and black locust. These types of wood can be used without treatment, and consequently they are environmentally friendly. Finally, our decision to balance economy, utility and ecology in our project was successful. This combination was significant on the construction market as environmental factors become increasingly important. Cohabitation dangerous between tramway, cars and cyclists on the George V Bridge (Orléans) 3D modelling of the cable-stayed bridge Tri-dimensional numerical simulation of the bridge Contact: alexia.miceli@etu.univ-orleans.fr; julie.repusseau@etu.univ-orleans.fr POLYTECH ORLEANS 38 | STUDENT PROJECTS CATALOGUE 2013/14 Environmental impact assessment of a quarry on the quality of water Civil, environmental engineering Elodie JUCHAT / Victoria RIGAUD Academic supervisor: M. DEFARGE Industrial supervisor: M. BAUDOUX E. Juchat Company: La Ligérienne Objective/motivation Our fifth year project is an environmental impact assessment of a quarry on the quality of water. Our work is the extension of a study which has been carried out since 2001 in collaboration with a quarry, in order to assess the environmental impact of this quarry on groundwater, surface water and water resources. The quarry is an alluvial quarry. Our project is part of a campaign which will last eighteen months, until June 2015. First, we had an extensive bibliography to read (reports, legislation), then we did some sampling on site, analyzed the samples in the laboratory, interpreted them and compared them to results from previous years. It is an important project for the quarry. Indeed, quarries have a serious impact on environmental water quality, particularly on surface water, which is sensitive to suspended particulate matter. Results We analyzed some samples of water from upstream and downstream of the quarry, to assess its impact. After filtering the samples, we carried out several tests: the COD or Chemical Oxygen Demand (quantification of all elements that consume oxygen in water), the BOD5 or Biological Oxygen Demand over five days (organic pollution criterion based on the amount of oxygen consumed in five days at 20°C by the microorganisms in the water), the suspension rate of the matter, and the water color. We also carried out some ion chromatography in order to determine the proportion of some anions and cations. We interpreted our results and created a file that we submitted to the quarry. Legislation sets values which must not be exceeded and requires that the quarry carry out this type of survey, in order to control its possible impact on the environment. Keywords: quarry, environmental impact, groundwater, surface water, legislation Sampling with Mr. Almeida Interactions Geological context Contact: elodie.juchat@etu.univ-orleans.fr; victoria.rigaud@etu.univ-orleans.fr POLYTECH ORLEANS V. Rigaud CIVIL ENGINEERING | 39 Establishment of a methodology of study using numerical modeling to comprehend a phenomenon of Tuffeau alteration Materials Melina BROSIER CALTABIANO / Thaisa de Fatima GONDEK Academic supervisors: Dashnor HOXHA, Sarah JANVIER M. Brosier Caltabiano Company: PRISME Laboratory Objective/motivation White tuffeau is a limestone of Middle Touronian geological age characterized by its high permeability and porosity, used in the construction of the castles of the Loire Valley. This project consists of establishing a methodology to study the chemical-thermal-mechanical-hydric changes in tuffeau in order to determine the main cause of spalling in Chambord castle. With numerical modeling, we can create scenarios combining the factors of changes like variation in temperature, humidity, porosity and chemical composition of tuffeau. The role of smectite clay, present in the tuffeau, is especially studied with respect to its capacity to expand on contact with water. This leads to a fatigue-like process due to internal stress generated by swelling. The objective is to research the parameters characterizing these processes in order to perform a numerical modeling using adapted software. T-F. Gondek Results The numerical modeling is performed using Hydrus-1D that combines on the one hand a geochemical modeling through PHREEQC, that is a biochemical model, and on the other hand the HP1 software that deals with water flow as well as heat and solutes transport in variably saturated soils. The geometry of the problem is that of a typical block wall whose chemical and mineralogical composition is that of tuffeau. The principal input parameters are chemical composition, permeability and porosity. The impact of environmental variations is modeled through suited boundary conditions in temperature and humidity. It is then possible to follow the evolution of chemical composition as well as the thermal and hydric conditions of the evolution within the stone as a function of time, and deduce internal stress responsible for spalling. Keywords: stone, degradation, Tuffeau, clay, numerical modeling Contact: melinabc@gmail.com; thagondek@yahoo.com POLYTECH ORLEANS 40 | STUDENT PROJECTS CATALOGUE 2013/14 Gypsum soil stabilization by a binary binder Civil engineering Monsif MANSOURI / Hamza SAHLI Academic supervisors: Marwen BOUASKER, Mukhtar EL-MUZAHIM Objective/motivation Most civil engineering structures such as buildings, pavements, and bridges are found in different types of soils. The stability of these structures depends on many soil parameters which are represented by the bearing capacity of the soil, the settlement characteristics and the volume change behavior. In terms of engineering, poor soil conditions decrease the structure’s stability and increase the cost of construction by necessitating special foundation structures or using some soil treatments. Consequently, it is crucial to study the nature of the soil that is being dealt with, and suggest the best solution economically speaking. Starting from this concept, our objective is to study a problematic soil (gypseous soil) with different proportions of gypsum in order to improve its capacity so it can be used in highway and road constructions. Results Our gypseous soil is very sensitive to changes in the stress system and moisture content. The construction of engineering structures on sulfate-bearing soils, without taking any protective measures, is highly risky. So we improve it using a soil stabilization in place. We use chemical stabilization by adding different percentages of cement and slag, and we took several series of samples. We did different pressure tests at 7, 14 and 28 days, and studied the free swell of these samples, and we carried out some microstructural tests with the scanning electron microscope, the X-ray diffraction, the mercury porosity and thermogravimetric analysis. Keywords: soils, stabilisation, gypseous Soil samples Compression test Building damage due gypsum dissolution Contact: monsif.mansouri@etu.univ-orleans.fr; hamza.sahli@etu.univ-orleans.fr POLYTECH ORLEANS CIVIL ENGINEERING | 41 Hydrological and hydrogeochemical studies on Charlemagne Island Environmental engineering Alice HILAIRE / Corentin PRIOUX Academic supervisors: Mr DEFARGE, Mrs JOZJA Industrial supervisor: Mr BRISFERT A. Hilaire Company: Town Council of Orléans, CETRAHE Objective/motivation The project is based on Charlemagne Island, a few miles southeast of Orléans, and deals with hydrological and hydrogeochemical studies on the body of water near the swimming area. Indeed, there is one identified resurgence and two others possible where chemical compositions are different from the rest of the body of water but the sources of these waters are not known. Thus, the purpose of the project is to bring new elements and to target the studies, which may be carried out on zones with problems. Indeed, the town council wants to solve the problem of bad water quality because it prevents them from authorizing swimming or leisure activities in this area. Results As the phenomenon of reverse is not known, it has been necessary to compare the level of the Loire with the body of water. A topographical survey revealed that in flood periods, the Loire feeds the body of water. Moreover, as the town council will give its budget after the elections, a tracing seems impossible to carry out. The campaign of sediment samplings to map the presence of cyanobacteria (the problem for the water quality) and the readings of the data of the temperature probes of the divers (which show low levels of the Loire and, thus, when the resurgence works in loss) and the town council probe were carried out on Wednesday, March 12, after first being postponed. C. Prioux "Bloom" of cyanobacteria (green film) Keywords: hydrology, sediments, hydrogeochemistry, cyanobacteria, leveling Topographical survey on Charlemagne Island Follow-up of the level of the Loire (Source : vigicrue) Follow-up of Orléans rainfall in 2014 (Source : infoclimat) Contact: alice.hilaire@etu.univ-orleans.fr; corentin.prioux@etu.univ-orleans.fr POLYTECH ORLEANS 42 | STUDENT PROJECTS CATALOGUE 2013/14 Life cycle analysis as a decision support tool Environmental engineering Quentin CALLERI / Hermann HEHOMEY Academic and industrial supervisor: Chantal PROUST Institution: The Engineering School of the University of Orléans (Polytech Orléans) Objective/motivation We are students in Civil Engineering and we chose the subject on Life Cycle Analysis and its application to road construction. The main idea is that it’s not always obvious to choose the components to build a road in order to save and replace natural aggregates without damaging the environment. In our case, the interesting building materials are the natural aggregates and recycled ones. The Public Procurement Code requires that environmental criteria be taken into account in road construction projects in addition to economical aspects. That’s why civil engineers and other competent bodies need a decision support tool such as ECORCE, the one currently developed by C. Proust, A.Jullien, and different experts from IFSTTAR, which helps to determine the environmental impact of a material. It is a great opportunity for us because we have been working on one of the future’s most used softwares in road construction. Results We used two levels of comparisons: results of leaching tests for natural aggregates between them and we made a comparison with recycled aggregates. GWP (“Global Warming Potential”) is the first impact on the environment but it is not enough. We are interested in other indicators like EP (Ecotoxicity) and TP (Human Toxicity). We studied the impact of each type of material on the three components of the environment: fresh water, air and non-agricultural land. The results were consistent overall with our initial intuitions. EP and TP indicators are moving in the same direction with a certain correlation. Moreover, the values of these indicators were lower for natural materials than for recycled materials. In fact, the maturation of aggregates reduces the release of chemical elements in time, so EP and TP indicators are relevant for estimating the environmental impact and making a decision in a road construction project. Keywords: life cycle analysis, environment, aggregates, ecotoxicity, human toxicity Road construction Aggregates leaching test Contact: quentin.calleri@etu.univ-orleans.fr; hermann.hehomey@etu.univ-orleans.fr POLYTECH ORLEANS Comparison of EP and TP for a material CIVIL ENGINEERING | 43 Life cycle assessment applied to building Civil engineering Pauline Le BILLER / Anouk MINON Objective/motivation The International Organization for Standardization defines Life Cycle Assessment as following: “the compilation and the evaluation of the inputs, outputs and the potential environmental impacts of a product system throughout its life cycle”. It is day-by-day more at the heart of construction projects. In addition to its financial cost, it is necessary to see the impact of projects on the environment. Many software products exist to compare building projects but the results are most often really different. In fact, each software product being developed by companies may orient calculations and results to have the best project according to their knowledge. So it is necessary to have a reference software product. The software Ecorce has been developed for road projects by Ifsttar. The objective today is to complete this software so that it also applies to building. P. Le Biller A. Minon Results We have been able to compare the two most-used software products in France according to precise criteria: the computations and the type of chemicals that are taken into account to assess the environmental impacts, the norms on which the assessment is based, the data base used to compute the impact of each compound of a building and the units that the software uses. This comparison allowed us to single out the most adapted unit for life cycle assessment as well as the advantages and drawbacks of data bases used today. Additionally, this research has allowed us to highlight the limits of today’s software products. All the gathered information and observations will be useful to produce an impartial software product that can be used as a reference tool by the government to proceed to life cycle assessment applied to buildings. Keywords: life cycle assessment, software products, building Schema LCA Comparison hangar on the ELODIE software Comparison hangar on EQUER software Contact: pauline.le.biller@gmail.com; anoukminon@gmail.com POLYTECH ORLEANS 44 | STUDENT PROJECTS CATALOGUE 2013/14 Parametrical study of the reservoir rock behavioral model used for oil basin modeling Civil engineering Maxime DELAGE / Arnaud LANCON Academic supervisor: Dashnor HOXHA Objective/motivation Recently it has become increasingly difficult to make new discoveries and to predict the location of petroleum accumulations, their volumes and their composition due to the fact that many of the world’s new interesting exploration areas are characterized by structurally complex geologic settings. The rapid advances in computer hardware and the associated reduction in cost have resulted in a marked increase in the use of numerical methods to analyze geotechnical problems. This project provides an overview of two main models used for geologic studies: the Modified Cam-Clay (MCC) and the Critical State Model (SR3). An introduction to the oil and gas global context, numerical analyses and model programming are presented to demonstrate the importance of those techniques for the petroleum industry and their differences. Results Our project has been divided into three parts. The first one was the study of the context. We learned about the oil industry through specialized books and research papers in order to improve our engineering knowledge (in geology, geophysics, and drilling) but also to better understand the economic aspect of oil exploration and the need for structural modeling. During the second part we worked on the computational software Mathematica. We wrote the code of the two structural models CamClay and SR3 following the definitions found on our own in the scientific database ScienceDirect® and with the help of our supervisor. In the last part of our project we eventually compared the two models. Thanks to stressing simulation and 2D/3D representations we were able to visualize the tiny differences between these two complex methods. Keywords: geotechnics, structural modeling, oil and gas industry, SR3 model, CAM-CLAY model CamClay imagery SR3 imagery Oil system Contact: maxime.delage@etu.univ-orleans.fr; arnaud.lancon@etu.univ-orleans.fr POLYTECH ORLEANS CIVIL ENGINEERING | 45 Reinforced concrete design Civil engineering Nicolas Fougeron / Yasmine Yamani Academic supervisor: Naima Belayachi Industrial supervisor: Sylvain Dupuis N. Fougeron Company: EBI Objective/motivation We chose to do this project because we both want to work in a design office after our studies. Our objectives are to discover how engineers work, and to design some elements in reinforced concrete, going farther than during our lessons. Also, this project gives us the occasion to learn another norm (older than the norm we learnt at school) to calculate the iron framework. The industrial project allows us to do a real project. First we will discover how a design office works and how a study is led between the different people who intervene (the engineers, the designers, the companies...). Then we will be able to optimize our choices with the help of experienced people. Last, we will have the opportunity to learn how to choose the least expensive solutions, and the easiest one for the workers on the construction site. Results This project allowed us to work with structural engineers in a reinforced concrete design office. We were able to assist them in their work in order to have them save time. We also learnt as much as possible with qualified engineers. Using different design standards, our project enabled us to gain skills (particularly concerning earthquakes and fire behavior) and acquire experience in the field of structural analysis. We learned how to design with some calculation software widely used in design offices. Those software products allowed us to save time by not making all the calculation by hand and also to compare the various norms. At the end of the project, we were able to give pertinent information to the design draftsmen to allow them to write up a reinforcement scheme which will be sent to the construction site. Y. Yamani Beam iron framework Project global view Keywords: reinforced concrete, design office, building Building model drawn with the computer Bending moment diagram Contact: nicolas.fougeron@etu.univ-orleans.fr; yasmine.yamani@etu.univ-orleans.fr POLYTECH ORLEANS 46 | STUDENT PROJECTS CATALOGUE 2013/14 Report on arithmetic methods of risk accumulation in the environment Environmental engineering Quentin CHEVALLIER / Charlotte FRIARD Academic supervisor: Lydie LEFORESTIER Industrial supervisors: Florence COUTURIER, Jacques THORETTE Q. Chevalier Company: DREAL Centre Objective/motivation Our project consists of a summary report of arithmetic methods of risk accumulation in the Centre region. We will have to make a bibliography on different arithmetic methods of risk accumulation in the environment and also to specify the idea of risk accumulation in the environment and make a list of the different risks here in the Centre region. At the moment, an accumulation of that size has never been carried out. Another part of the project consists of meeting the different departments of the DREAL. Results As we expected, the accumulation of the whole risk here in the Centre region is really difficult. After trying to focus on only three risks, we admitted that the accumulation wasn’t possible within the allocated time. Indeed, all the data characterizing the risks are available on different scales, and it is hard to put them in the same reference source. The probability of occurrence and the impact of the different risks are also hard to number. Finally, the advantages of risk accumulation aren’t clearly established. Indeed, gathering together all the chances in one risk to hide them, and it might stir up a lot of fear. Keywords: risk, issue, accumulation, hazard Map of municipalities with a PPRI in the Region Centre Map of sensitive municipality to air quality in Region Centre Contact: chevalier.quentin@etu.univ-orleans.fr; friard.charlotte@etu.univ-orleans.fr POLYTECH ORLEANS Map of ICPE location in Region Centre C. Friard CIVIL ENGINEERING | 47 Response to a call for tender for the building of a nursing home for disabled adults Civil engineering Guillaume Jarry / Kevin Passot Academic supervisor: Jean-Marie Schaff G. Jarry Objective/motivation Our project consists of meeting a demand made by LogemLoiret whose object is the construction of a nursing home for disabled adults. In this project, TPVL was in charge of the roads, earthwork structures, building platform and excavation of trenches for communication, water, electricity and gas networks. Our job is to submit the bid of the company for this project. We specialize in public works and this project suits our academic education. The first step is to fully understand the technical specifications written in the CCTP. The next and biggest step consists of analyzing our solution through different software like Alizé (Design of Pavement Structure Software) and Mensura (Computer Aided Design Software for Road and Utilities Infrastructure). The last objective is to estimate each material, labor and equipment for a task to get to the final price and schedule. Results We have different results to explain with this project because of the extent of the project. After working on several Mensura files with different parameters (such as taking into account the green spaces, the platforms of the buildings) we found the water flow for the holding pond. Also one of the major results of the project is to estimate the quantity of materials for the site, finding the right balance between excavating and refilling and re-used materials on site. Another main result is the choice made for the road structure, the different technical characteristics and freeze resistance of the pavement tested with Alizé software and respecting the guide for road platform building (GTR). Finally, our result is the final price and detail of the work to meet the bid and respect every specification required by the client, this is followed by the simulation of the building stage with the schedule. Keywords: earthwork, sanitation network, road structure, estimating, scheduling K. Passot Overview of the hydraulic project Two parking lots in asphalt Sectional view of the sanitation network Contact: guillaume.jarry@etu.univ-orleans.fr; kevin.passot@etu.univ-orleans.fr POLYTECH ORLEANS 48 | STUDENT PROJECTS CATALOGUE 2013/14 Response to a call for tender in the public works area Civil engineering Gaëtan Le Feuvre / Paul-Emmanuel Le Grand Academic supervisor: Jean-Marie Schaff G. Le Feuvre Selected participant 7th Annual Final Year Projects Forum Objective/motivation The purpose of this project is to respond to a call for tender. This call for tender includes: works of road and utilities, layouts and the reorganisation of the public space for the creation of the new neighbourhood "La Cerisaille" in Saint-Jean-le-Blanc. In this context, we need to study the documents included in the constituent parts of the main contract (Special Technical Specifications, Special Conditions of Contract, plans and notes of calculations). The objectives of the projects are to be able to use a frequently used software in this area of work: Mensura Genius, to optimize roads structure, to calculate sanitation networks, to plan work and finally to cost work. It will permit us to end our training with a very practical project, that is to say a project that calls for what we have learnt, and that can be asked to an engineer. P-A. Le Grand Results As a result, after having done some lab tests of the ground, we first found other technical solutions for the road structures to reduce the cost and to make the construction easier. Then we were able to show a complete digital model of the project. We used this model to verify that the sanitation is well designed, and we can say it is. This model was very useful for seeing the small incoherences of the paper plans that we were able to correct. We measured all the elements of the project in order to list the materials that will be needed to be ordered. After this we planned the construction machines and the labour required to put in place those materials. Considering this, we finally gave the price and the carbon balance of the work. Keywords: housing estate, roads, sanitation, main networks, call for tender Real view of the work at the end of the construction 3D driver view of the work at the end of the construction 3D overview of the work at the end of the construction Contact: gaetan.le-feuvre@etu.univ-orleans.fr; paul-emmanuel.le-grand@etu.univ-orleans.fr POLYTECH ORLEANS CIVIL ENGINEERING | 49 Sizing and modeling of building with five floors and a basement Civil engineering Marie PODWOJEWSKI / Sébastien SINET Academic supervisor: Mr. Bouasker Company: Deshyplus Objective/motivation The topic we chose deals exclusively with building. Thus, we could apply the skills we learned during our years of study either at school or on our work placement. In addition, one of us did research in her previous work placement and did not have the chance to see this part of the design and the other had only worked on construction sites and wanted to see how the planning side worked. We were asked to place columns and beams on the five floors of the building, the ground floor and the basement. Then we had to check if the sizing and the structure met the different standard requirements. Results Once the positioning of the columns and beams had been done, we drew up several plans to check which were better for our project. The columns had to be continuous from one floor to another. Once done, we had plans and we need to transfer them to Robobat or Arch software. However we did not manage to acquire the Arch software so we tried modeling our plans on Robobat. However, the software encountered problems linking up certain points which prevented us from doing the calculations to check our results. Ground floor columns and beams Overhanging beam Ground floor plan Position of columns and beams in basement Contact: Marie.podwojewski@etu.univ-orleans.fr; sebastien.sinet@etu.univ-orleans.fr POLYTECH ORLEANS 50 | STUDENT PROJECTS CATALOGUE 2013/14 Study of the ecosystem services due to urban green ways Environmental engineering L. Tavares Luísa Tavares / Chloé Thivolle Academic supervisor: Mikael Motelica Objective/motivation The SERVEUR project started two years ago. During this time, the researchers chose the different green ways to study. They classified them by groups and chose one type in each city studied. There are six cities in the study: Blois, Bourges, Chateauroux, Orléans, Tours and Chartres. This project aims, in an urban context, to identify the benefits of the green ways both for the population and communities. For our project, we will focus on the Pasteur Park in Orléans. The objective of our project is to improve the knowledge of the urban green ways. We focused on the soils with a pedological, a landscape and an agronomical study. C. Thivolle Results We took soil samples from Pasteur park and made a penetration test on the park. We made a few tests with the samples collected. For the pedological study we described the soil horizons and determined the porosity and the granulometry of each sample. For the landscape study, we made a map of the park with the occupation of the vegetation. For the agronomical study, we made the pH and salinity tests, and determined the levels of nitrate, ammonium, phosphorus, iron, manganese, cooper, boron, zinc, molybdenum, carbon and nitrogen. We find that the level of nitrate in the soil is null. This result shows that there is no pollutant in the soil. Next, the porosity test shows that the soil regulates the air and the water circulation. Finally, the pH level is included between 7 and 8. This result shows that the soil is neutral which is good for the growth of plants. Keywords: ground composition, green ways, natural resources The Pasteur Park - Orléans Soil texture test Contact: luisa.tavares-sangiorgi@etu.univ-orleans.fr; chloe.thivolle@etu.univ-orleans.fr POLYTECH ORLEANS The Smart 3 machine for the agronomical study CIVIL ENGINEERING | 51 The evaluation of the calculation modules according to the Eurocode 2 and Eurocode 7 for the foundations and the structural elements of a building Civil engineering Y. Li Yunpeng LI / Christophe TANGUY Academic supervisor: Dashnor HOXHA Objective/motivation The objective of our project is to put into practice the European norms for the structural design of construction works named « Eurocodes ». In all, there are 10 norms from Eurocode 0 to Eurocode 9. For our project, we used principally the norms « Eurocode 2 and Eurocode 7 ». The Eurocode 2 norm is necessary for the design of concrete elements and the Eurocode 7 norm is necessary for the design of foundation buildings. In our work, we used the calculations by software and the classic design by hand. We tried to compare them. The purpose of the application of Eurocode 2 is to find the best dimensions of the columns, continuous beams and concrete slabs of a building depending on the loads. C. Tanguy Results Using of Eurocode 7 on design of a shallow foundation consists to calculate the capacity of the soil to support loads transmitted by the building (ELU design) and to calculate the settlement of the soil (ELS deign). Our result by hand of the 1st calculation is in the same rough size as the software calculation. For the second, the software uses another method less precise than our method by hand. Concerning the dimensions of the building, we fixed at the beginning the dimension of the different structural elements. Then we attempted to find the vertical load distribution for each element. After that we calculated their best dimensions and their best armature sections. We also use the software to design the size of these three structural elements. At last, we need to compare the results from the software with the results by hand. We did some Excel documents that permitted us to automate a part by hand calculation. From the left to the right, the top to the bottom, these photos present the global view of the building; the general information of the building; the simplification of the 1st floor for the vertical load distribution; the explanation of the foundation and the simplification of the calculation model for the foundation. Keywords: foundation, structural element, reinforcement, optimization, comparison Contact: yunpeng.li@etu.univ-orleans.fr; christophe.tanguy@etu.univ-orleans.fr POLYTECH ORLEANS 52 | STUDENT PROJECTS CATALOGUE 2013/14 The renovation of a private outdoor area Civil engineering Anthony Leleu / Gatien Sigmund Academic supervisor: Xavier Brunetaud Objective/motivation We chose this project because it was complete and contains all the different steps of an civil engineering project. The objective is to renovate a private outdoor area. That includes two different parts: the study and the site construction. During the first part, we needed to pinpoint the client’s needs in order to propose different solutions. First, we had to analyse the topography and the geology to determine what kind of structure we have to put in place to ensure the sustainability of the parking structure. Second, we had to define the cost of every solution. In order to do this, we contacted some suppliers to obtain the best price. Then we proposed the cost of our different solutions to the client. The final step was the construction phase of the solution defined by the client. Results We created a DTM (Digital Terrain Model) in order to suggest some space layout possibilities. Our sounding of the ground studied in the laboratory allowed us to determine a road structure with good mechanical characteristics. Using the DTM, we could make a list (in terms of quantities) of what we needed to achieve the solution chosen and the construction site. We opted for a structure composed of 25cm of limestone under 5cm of semi-coarse asphaltic concrete. This represented around 45 metric tons of materials. We started the major part of the construction site on February 18 and finished it in one week. We had to deal with problems such as weather conditions, efficiency estimation, soil liquefaction, and provider management. This showed us the sort of problems which can appear during a construction site. Keywords: study, renovation, budget, efficiency, soil characteristics First check out of the construction site Levelling works step Preparation of the limestone road structure In front of the house Implementation of concrete borders A view from the first floor Contact: anthony.leleu@etu.univ-orleans.fr; gatien.sigmund@etu.univ-orleans.fr POLYTECH ORLEANS A. Leleu G. Sigmund CIVIL ENGINEERING | 53 The structural design of heavy-duty pavements for ports Civil engineering Abdelkrim BARGHACHI / Zakaria ZAHAYER Academic supervisor: Naima BELAYACH A. Barghachi Company: ADM Projets Objective/motivation We were very interested by the new port of Tangier because of its popularity to be the biggest port in the whole Mediterranean and its success that is being confirmed by the government statistics. Therefore, we thought it would be great to have the design subject of the extension of this port: TANGER MED II from the company. Hopefully, we did success to have the subject and thanks to Mrs Naima BELAYACHI who agreed to supervise us, we did start to tackle the project. The objective was to design this extension (of the port) by comparing different methods namely the French method and the British method, then choose one of them according to different factors (cost, ease of maintenance, delay of construction…) and use its technique to design (give the thickness of the principal base and the one of each ground’s layer. Z. Zahayer Results We did a big comparison between the different methods of port design. In the end of our comparison, we came out with a conclusion that is to keep only the two appropriate methods the French and the British one, which we used to design this part of the port. With Alizé software, which uses the French method, we entered a specific amount of loads calculated beforehand (according to the number of vehicles and containers present in this zone), then we have as a result the base thickness. The same thing using Visual basic and Excel Worksheets, with the British method, we entered the same amount of loads to have in the end of the program the base thickness. Consequently, the British method was adopted for the design of this port extension because of its economical aspect, fast construction, ease and cost of maintenance. Keywords: port design, heavy-duty pavements, visual basic - excel, Alisé LCPC, containers Contact: abdelkrim.barghachi@etu.univ-orleans.fr; zakaria.zahayer@etu.univ-orleans.fr POLYTECH ORLEANS 54 | STUDENT PROJECTS CATALOGUE 2013/14 Tuffeau vs Richemont’s stone in a case of a fire, using colorimetry Civil engineering Melissa BARBAULT / Timothée DUFOUR Academic supervisors: Sarah JANVIER, Kevin Beck Company: CRMD (Research Center on Matter Divided) M. Barbault Selected participant 7th Annual Final Year Projects Forum Objective/motivation In the first semester, we had two courses taught by Dr Kevin Beck on the sustainability of building stones. These courses were very basic and just introduced some concepts about the Richemont stone and the Tuffeau. Having had only concrete and steel courses throughout our studies at Polytech, we found it very interesting to choose a project that would teach us a lot about these two different stones frequently used in construction especially in the Loire Valley. Furthermore, this project is original in that it uses colorimetry in order to make a comparison between the wear of the stone and its color change, which has never been done before on stones. Finally, this project enabled us to go to the beautiful castle of Chambord, made of Tuffeau and Richemont stones. T. Dufour Results In this project we did a lot of experiments on these two different stones at different levels of temperatures (from 100°C to 800°C). We had to do approximately 10 different tests: The tensile and compression tests (with wet and dry stones), colorimetry, imbibition, electronic scanning microscope, porosity, permeability and x-ray diffraction. For each test, we prepared numerous samples in order to have some results and then to establish an average of these results. Before doing all these tests, we observed a color change for each stone when we pulled the samples from the oven. In figure 4, we can observe an example of the destruction of the Tuffeau depending on the heating temperature. We can see that micro-cracks appear from 700°C and at 900 °C, all the samples are destroyed. We observe approximately the same thing for the Richemont stone even if this stone is more resistant. Keywords: Tuffeau, Richemont, colorimetry Coring machine Colorimeter Compression and tension test Contact: melissa.barbault@gmail.com; timothee.dufour@hotmail.fr POLYTECH ORLEANS Evolution of the Tuffeau structure at different heating temperature CIVIL ENGINEERING | 55 Urban mobility plan in the pays forêt d’Orléans Val de Loire Civil engineering Chahid BOUKHRISS / Adrien MARTIN Academic supervisors: Sarah Janvier, Xavier Brunetaud C. Boukhriss Objective/motivation We chose to deal with this project because of its originality. We didn’t have to do experiments but had face to a new very interesting problem not dealt with a lot in class. The main goal was to help a structure to create a mobility plan on its territory. This kind of project is very long and we were unable to find many results in two months. However, we were able to give the structure some information to enlighten them. In the best case, we were able to propose a strategy and some ideas of how to organize travelling the area: a train line between Chateauneuf sur Loire and Orléans or a bicycle path linked with Loire à vélo for example. A. Martin Results We produced some technical cards about the mobility plan (definition, making strategy) and about three different travel surveys. Moreover, we provided some maps of the sites we chose: a train line between Chateauneuf sur Loire and Orléans. On this map, we highlighted the important towns, development sectors, the train line, the regions with a dense population, etc. In fact, we established a picture of the present set up to improve the future. The result of our project is not an urban mobility plan but a strategy and a useful list of data. Keywords: layout, mobility, transport, environment Links between several urban documents Different steps of a mobility plan Contact: chahid.boukhriss@etu.univ-orleans.fr; adrien.martin@etu.univ-orleans.fr POLYTECH ORLEANS 56 | STUDENT PROJECTS CATALOGUE 2013/14 Urban sprawl in campinas: evaluation through orbital imagery Environmental engineering Fernando Ribeiro Academic supervisor: Stanislas SIZARET Objective/motivation The Brazilian city of Campinas is the head county of a metropolitan region which includes eighteen other counties. As the city grows, the need to occupy new areas increases. With the housing speculation of the central areas came the increase of cities fragmentation, which implies the definition of peripheral areas that attend various population segments. The implementation of measures depends on proper planning to maintain the quality of life. Otherwise, housing and road infrastructure become overloaded and obsolete. This project proposes to assess the urban expansion in Campinas - as an important municipal planning aspect and consequent achievement of quality of life - through temporal analysis of satellite images, by which it is possible to determine the regions of urban sprawl. Besides this, it is proposed to validate the geoprocessing tools as a powerful tool in drawing up urban plans. Results The classification process generated two maps showing the urbanized areas between 1991 and 2011. There was an increase of 49,65% (from 143km² to 214km²). The process was based on low-resolution images, which limited some initial goals. The impossibility of characterizing the areas visually prevents its linkage to census data, allowing only an overview of the urban expansion in Campinas. However, given the working conditions - based on low-resolution images and the use of free software -, the results were very satisfactory in proving the efficiency of geoprocessing tools for remote sensing through analysis of satellite images. Compared to official data, the current urbanized area is 238km², a difference of only 11,21% compared to the measured one. This demonstrates that investments in equipment and workforce are sufficient to obtain better results, creating mechanisms that guide the decisions-making by the government. Keywords: planning, temporal analysis, geoprocessing, remote sensing Contact: fernando_hsr@hotmail.com POLYTECH ORLEANS CIVIL ENGINEERING | 57 Viscoelastic behavior and mechanical homogenization of masonry wall Civil engineering Adolphe Constantine / Benoit Huret Academic supervisor: Amna Rekik A. Constantine Institution: The Engineering School of the University of Orléans (Polytech Orléans) Objective/motivation This project is related to brick and mortar which is a material used in the field of building construction. However, this project is composed of two parts: The first is about studying the creep behavior of masonry (which means the viscoelastic behavior of masonry walls) and the second part consists in analyzing the fracture behavior of masonry. Different rheological models need to be studied such as: The Maxwell model, the Kelvin-Voigt and the Zener model. Once the idea of these models is clear, it is necessary to predict the global behavior of masonry (both brick and mortar) assuming that brick has a linear elastic behavior. B. Huret Results To describe the creep and mechanical behavior of this large-sized masonry, it is necessary to use an equivalent material instead of a model that comprises all the bricks and joints involved. The properties of the equivalent material depend on the opening and closure mechanism of joints. According to the project work, the joint is regarded as a deformable medium; which is not meaningful in the absence of mortar. It is easier to derive a homogeneous material whose mechanical characteristics depend on the joint state. For each joint state, the equivalent mechanical properties are determined by homogenization using the finite element method “FEM”. The studies are focused on a small part of this masonry wall by using CAST3M as software, which is a computer code for analysis of structures by FEM. It is a flexible analysis and optimization program for nonlinear problems. Keywords: masonry wall, viscoelastic behavior, creep behavior, homogenization Project schematic - CAST3M logo Project schematic - CAST3M 3D cell Project schematic - CAST3M 2D cell Contact: adolpheconstantine@hotmail.com; b.huret@gmail.com POLYTECH ORLEANS MECHANICAL ENGINEERING | 59 Mechanical Engineering POLYTECH ORLEANS 60 | STUDENT PROJECTS CATALOGUE 2013/14 Agglomeration study in a fluidized bed reactor Materials Laury Suzin Academic supervisor: Jean Luc Daniel Industrial supervisor: Judit Kaknics Company: CEMTHI CNRS Objective/motivation Biomass is becoming a huge concern thanks to its use in the gasification process where we use a fluidized bed reactor technology to produce clean syngas. There are two main products used in gasification in this project , miscanthus X giganteus which is a particular type of biomass with tremendous adaptability to different soils and olivine used as the bed materiel. Although fluidized beds have advantages, the industry still has to face issues, such as slagging , fouling and agglomeration. This is due to the reaction between miscanthus ‘ashes and the bed material. Thanks to previous researches we know that one of the main factors of the agglomeration is the alkalis from the ashes. Therefore the objective of the project is to study the influence of different types of ashes and bed materials on the rate of agglomeration. Results We used two types of ashes. First ,the miscanthus burned to obtain the ashes had not undergone any previous treatment whereas the other type was obtained after a leaching using water to get ashes with a low rate of alkalis. We used two types of bed material : natural olivine and a calcined olivine with a higher iron rate. We clearly see a huge difference between the agglomeration with the normal ashes and the treated one , when the alkalis is not there , the rate of agglomeration represents a drop of 9%. Nevertheless by using calcined olivine, the rate of agglomeration represents a growth of 33 % of agglomeration because of the iron in the bed materials contributing to the phenomenon. To decrease drastically the rate, we used an anti-agglomerate called kaolin. We get to drop the rate and also weaken the interaction between the materials. Keywords: miscanthus x giganteus, ash, olivine, agglomeration Scanning electron microscope ( SEM ) image of molten ash ( grey ) and olivine (black ) , obtained at 900 degrees with the fluidized bed reactor Contact: laury.suzin@etu.univ-orleans.fr POLYTECH ORLEANS MECHANICAL ENGINEERING | 61 Characterization and control of separation on a ramp by synthetic jets Energetics Asmae EL MEKKAOUI / Guendiya GNALI Academic supervisor: Azeddine KOURTA A. El Mekkaoui Institution: PRISME Laboratory, GDR 2502 Objective/motivation Flows we deal with in industrial applications, for instance the rear part of a vehicle, have usually an unsteady three-dimensional character. Generally, those flows are turbulent and are coupled with other physical phenomena like separation. In fact, the flow is characterized by a boundary layer that might leave the surface at some point. This phenomenon is responsible for the decrease in aerodynamic efficiency. Our project is about the active control of flows by synthetic jets, in order to optimize aerodynamic performances. A reduction in the drag force and the degree of friction as well as the increase or creation of the lift force and the heat transfer are results of decreased efficiency. Thanks to the loud speaker, our actuator, we have to control an external flow on the ramp by the synthetic jets that flow out from a slot positioned on it. G. Gnali Results The measurements are made thanks to the hot – wire anemometry. The project is divided into two parts: the first part is to characterize the synthetic jet. The formation frequency found is 50 Hz. We also observed a velocity varying between 15 m/s and 18 m/s, after placing a thin layer of polystyrene above the diaphragm of the loudspeaker. The spectral analysis performed with Matlab, showed that vortices are generated by the formation frequency and also the presence of counter – rotating vortices. The second part of our project is about the active control by synthetic jets on the ramp. The external flow is simulated on the ramp with a blower. We observed a gradual drop in velocity flow on the step of the ramp, in many positions. This drop in velocity is an effect of the separation. Now, we have to find the formation frequency which will enable us to suppress this phenomenon. Keywords: separation, boundary layer, synthetic jets, control Model of studying Experimental devices Numerical simulation of the separation of a flow along an airfoil Experimental configuration Cavity with a 90 degrees inclined slot Contact: asmae.el-mekkaoui@etu.univ-orleans.fr; guendiya.gnali-njomachoua@etu.univ-orlean.fr POLYTECH ORLEANS 62 | STUDENT PROJECTS CATALOGUE 2013/14 Characterization of diesel injection in cold conditions Mechanical engineering Yahia ABERDIN / Ali ZEMMIT Academic supervisor: Camille HESPEL Y. Aberdin Company: PRISME Laboratory, Delphi Objective/motivation Each winter, the climate is getting colder, which has lead us to study the physical properties of fuels such as the BioDiesel fuel to improve the combustion in engines. The aim of this project is to decrease the polluting emissions in order to respect the next European pollution standards and improve driving comfort while starting the car. This project concerns the experimental study of the injection behavior of some fuels such as Diesel, BioDiesel or Winter Diesel in non-vaporizing and cold conditions. It is divided into two parts. The first step of this project is to determine the evolution of the introduction rate for different temperatures and to understand the influence of very low temperatures on the various types of fuel and on injection behavior. The second step consists in determining the temporal evolution of the fuel spray and to visualize it. Results The data process allowed us to find relevant results. When the temperature decreases, the viscosity increases and the properties of fuels such as atomization change. The Winter Diesel and the B20 fuel have the same evolution of their viscosity depending on the temperature. Normally, no distinction can be made between the two fuels concerning injection behavior. However, it was observed that the Winter Diesel has a better behavior in cold conditions compared to the others. Fuels composed of a mixture between Diesel and BioDiesel have the same behavior in cold conditions. But the B100 fuel did not handle the cold temperatures well. Indeed, it has the worst behavior. This project has shown us that it is not only the viscosity that controls the injection behavior, but that other parameters such as homogeneity and chemical compounds in the fuel can affect the results. Keywords: fuel property, injection rate, pollution emissions, discharge coefficient Viscosity Evolution spray Contact: yahia.aberdin@etu.univ-orleans.fr; ali.zemmit@etu.univ-orleans.fr POLYTECH ORLEANS A. Zemmit MECHANICAL ENGINEERING | 63 Characterization of the box brake on a manual window regulator of a car Mechanical engineering Amine DAOUDI / Souleymane SOMBIE Academic supervisor: Gilles HIVET Industrial supervisor: Constantin GUILLAUME Company: INTEVA Products Objective/motivation The box brake system is a system that allows the driving of the manual window regulator with the crank having a low impact on the operating torque and lock mechanism if it leads through the window. It assures maintaining in position of the window and the anti-intrusion protection of the system. This system has been used for many years and has been working properly. The goal of the project is to check whether the system is optimal and if there is a possibility of redesigning it. A mathematical model must be defined to characterize the system, and highlight the important influencing factors. Then, an optimal choice will be made on these parameters in order to realize a new design of the system. Results > Functional analysis of the system. > Definition of a mathematical model of the system. > Validation of the mathematical model by numerical simulations. > Determination of parameters that influence the behavior of the system. Keywords: mathematical modeling, finite element, experimentation Contact: amine.daoudi.2014@gmail.com; s.sombie@hotmail.fr POLYTECH ORLEANS 64 | STUDENT PROJECTS CATALOGUE 2013/14 Conductivity parameters sensibility study and resizing Energetics David DURAND / Kevin HELION Academic supervisor: Jean-Michel Favie Objective/motivation The final goal of our study is to show if there are differences between non homogeneous environmental heat transfers and homogeneous environmental conduction model. We intend to make a numerical model (thanks to a programming language named php) which will be able to calculate heat transfers in a room concerning the way in which the furniture is positioned. Indeed, the different states (air is a gas and furniture are solids) and the different thermal characteristics (heat conduction coefficients) work together to create a heterogeneous environment. As such, it has an impact on heat conduction and air circulation in a room and it affects heat exchanges between the room and outside. This phenomenon is worth studying for new low energy consumption houses. D. Durand K. Helion Results We looked for previous studies on this subject as it is state of the art. We focused on thesis and scientific publications but we did not find exactly what we wanted, we only found some studies about similar problems in the geology sector. The major part of our job was to learn a programming language (php) to build the numerical model. We made this model which works for every general case of a nonhomogeneous environment. It represents heat conduction and convection in and between the different phases and it works for boundary conditions. Therefore, it will work for many applications and not only for furniture in a room. We can take the example of green roofs by the company “Plus nature”. They are interested in using it to simulate heat transfers in grass more or less compacted for roof applications. Keywords: numerical, heat transfers, non homogeneous, 3D 3D model of the studied volume with the different phases (in different colors) and the calculation points Mesh’ representation that could be automatically created by our numerical program Contact: david.durand@etu.univ-orleans.fr; kevin.helion@etu.univ-orleans.fr POLYTECH ORLEANS The final application of our project is to better understand and simulate heat transfers through and into housings, very useful for energy saving in particular MECHANICAL ENGINEERING | 65 Create a digital model of a cooperative fuel research engine Mechanical engineering Kévin Champion / Florian Desenfans Academic supervisors: Pascal Bréjaud, Fabrice Foucher Industrial supervisor: IUT Orléans K. Champion Institution: IUT Orléans Objective/motivation Our project is about an old engine (1938), which is used to define the properties of all fuels (about the octane number). We have to create a numeric model of this engine, check if it is working, and then develop it. In this aim, we have to take some measures, and carry out experimentations on the engine. It involves the fact that we have to equip the engine with sensors, and check all technical dimensions. We have been motivated to choose this project because it deals with an engine unknown for us first. Also, we had the opportunity to work on it, on the test bench ; and to confront simulation and experiments. F. Desenfans Results After equipping the bench, we took some measures, and finally analyzed our results. We discovered all the problems linked to engine test on a test bench (irregularity of the pressure in the cylinder over 50 cycles for example) ; and the methods which are applied to solve them. Then, we have worked on our simulation model, based on heat transfer (Woschni) and combustion (Vibé) models. We fitted it to the experiments, then imported it in our model, and made some arrangements to fit all the results. Finally, we have concluded that it is hard to build a simulation model, and harder to fit it to the reality. Keywords: engine, simulation, test bench, combustion, engine filling The Clapeyron’s Diagram of the CFR engine The CFR engine Pumping Loop of the CFR engine Contact: kevin.champion@etu.univ-orleans.fr; florian.desenfans@etu.univ-orleans.fr POLYTECH ORLEANS 66 | STUDENT PROJECTS CATALOGUE 2013/14 Design, manufacture of a solar tracker demonstrator Electrical, mechanical engineering Julien Gragy / Flavien Gru Academic supervisors: Bruno Bonheur, Jean-Marc Aufrere J. Gragy Institution: The Engineering School of the University of Orléans (Polytech Orléans) Objective/motivation The objective is to make a small scale solar tracker from previous studies in 5A MCS. The photovoltaic panels having a poor performance, a solar tracker to increase performance is required. The tracker allows the tracking of the sun’s path with 2 joints: azimuth (rotation of the mast) and elevation (inclination of the panels) with a stamped strategy allowing the system to follow this path without manual assistance. In addition, this project will permit us to make a contribution to the specialty ICM / MCS in the context of internal and external communication. Results The first step was to conduct a functional analysis of the project. Then, study sourcing for the automation strategy and both engines to vary the angles of azimuth and elevation. For the azimuthal variation, a planetary gear system + geared-motor (asynchronous) was chosen and for the variation of elevation, an asynchronous electric actuator was chosen. The next step was, without a doubt, the longest and most difficult: getting the rates from manufacturers. Then, the last step was placing the orders. Machining and assembling parts will be handled by our 4A colleagues who we have to manage during this project. Keywords: sustainable development, photovoltaic, sun path Solar path Tracker architecture Solar axis Contact: julien.gragy@etu.univ-orleans.fr; flavien.gru@etu.univ-orleans.fr POLYTECH ORLEANS F. Gru MECHANICAL ENGINEERING | 67 Designing a robot simulating a baby for testing diapers Mechanical, materials engineering Elie KLINGEMANN / Etienne MAYOUX / Fatima Zahra SAADAOUI Academic supervisors: Samir ALLAOUI, Benoit LE ROUX, Mohammed MALKI Industrial supervisor: Franck DEBRUYCKER E. Klingemann Company: Eurofins Ats Objective/motivation The laboratory Hygiène Papier Bazar proposed that we improve its automatons for testing diapers. The aim of this project is to develop a prototype proposing a new feature and answer to productivity constraint. It will be completed through a master 2 training to build and validate the proposed solution. Within the timeframe granted, we limited our study to the detailed design of the Power transmission system. Our aim is to complete the 3D CA0 model and the report of the study that led us to our design. This project has several aspects: The market for baby diapers is expanding. The laboratory will have to test more and more layer diapers. Currently there are 3 devices, three sizes of diapers for babies, the customer need to improve them and increase their robustness and make them more flexible in order to meet the market demand. With 3 functional and flexible devices, the laboratory access to new markets for testing absorption diapers. E. Mayoux F-Z. Saadaoui Results As this project is a confidential one, we will avoid going into too much detail. At the beginning, EUROFINS ATS gave us a baby robot to improve. The task was great. We organized the project around 4 goals. The first was to validate the needs of the project. Therefore, we made an appointment with Mr De Bruycker at EUROFINS ATS. Then we drew up the Specifications, validated by the customer during the second step. When the first study was over we began the preliminary design stage. The goal here was to define the overall architecture of the baby robot. It comprising the research and selection of solutions to design the robot. That led us to the third step; the validation of a preliminary solution by the industrial head. We proposed three solutions along with a study of their feasibility. And the customer chose the most original adapted solution to his needs. Now we are working on a CAO detailed design. That we will present our solution at the end of the timescale of the project. Keywords: robot, diapers, failures, baby Choice of materials Gears Parallel transmission Contact: elie.klingemann@etu.univ-orleans.fr; etienne.mayoux@etu.univ-orleans.fr; fatima-zahra.saadaoui@etu.univ-orleans.fr POLYTECH ORLEANS 68 | STUDENT PROJECTS CATALOGUE 2013/14 Determination of laminar and turbulent flame speed in a sphere with pressure signal and optical measure Mechanical engineering Kevin Charmes Industrial supervisor: Julien Molet Institution: PRISME Laboratory Objective/motivation The aim of this project is to make the correlation between two methods of flame speed measurement. We want to determine the flame speed of fuel combustion into a sphere vessel. The first method, which is mastered, is the optical method. It consists in a measurement of the flame ray propagation during combustion with a high frequency camera. But this method is very costly and limited for turbulent combustion. Another method is wide used with the determination of flame speed with the evolution of the pressure signal into the vessel. According to this, we have to determine the flame speed with the pressure signal. In that case, we have to use the literature to find the best expression that will give the flame speed depending on the pressure signal. Results I have found my documentation in publications like: « Mathematical Solutions for Explosions in Spherical Vessels » by DEREK BRADLEY and ALAN MITCHESON and « Modified Analysis for the determination of the burning velocity of a gas mixture in a spherical constant volume combustion Vessel » by K.H. O’DONOVAN & C.J. Rallis. Finally, I demonstrated that the final expression is: > Su is the laminar speed combustion [m/s] > Pmax is the final pressure in the cylinder [bar] > Pi is the initial pressure in the cylinder [bar] > P is the static pressure [bar] > R is the Sphere ray [m] > Y is the gaz constant > dP/dt is the static pressure gradient Speed flame evolution Repeatability test To validate this formula, we have started some test of combustion with methane (CH4) with different air/fuel ratio. For each ratio, we have looked at the repeatability of our test to be sure that the results will converge (fig “repeatability test”). A difficult part of our work was to establishing a model of pressure evolution to correct the instability of the pressure gradient (fig “pressure gradient”). The results reveal that this expression overestimates the flame speed. (fig “Speed flame evolution”). However, the trend is maintained, consequently a hypothesis can be wrong. More tests are necessary in order to fit correctly the flame speed evolution and the influences of the turbulent combustion have to be established. Keywords: masonry, brick/mortar sandwich, interface characterization, high temperature, ultimate tensile stress Contact: kevin.charmes@etu.univ-orleans.fr POLYTECH ORLEANS Pressure gradient MECHANICAL ENGINEERING | 69 Development of a flame-wall interaction model in the combustion system in spark ignition engines via simulation tools Mechanical engineering Jiangbo Chen / Zhengliang Chen Academic supervisor: Christian Caillol Industrial supervisor: Sokratis Demesoukas J. Chen Company: Renault Objective/motivation Future standards of pollution will limit the imposed emission to develop new generations of spark ignition engines. Thus, in the context of optimization of processes in the development of internal combustion engines, modeling 0D-1D currently occupies a privileged place. The Renault Company has initiated an approach to improve its predictive simulation tools of combustion. And as part of a thesis, a combustion model was developed. This model has been implemented in the 1D code in GT-Power, software for simulation. But the evaluation of the model that compared with the experimental results showed that it must include a sub-model of flame-wall interaction in order to faithfully represent the heat release for the purposes of combustion. Z. Chen Results The work we have done was organized as follows: > Reading technical documents provided by our professor. > Define a method to calculate the burned gas volume in the engine cylinder. We decided to integrate the surface of the section on its normal direction to calculate the volume. > Programming the code with Matlab in a simplified model by neglecting the shape of the piston. > Developing the code in a complex model in which there is a hole in the piston. > Validation and comparison with the CATIA data. Finally, we have traced the curve of the burned gas volume depending on the crank angle. And we compared the curve with the experimental data. The errors are small and acceptable. So for the moment we think our program is basically correct and could be used in the global combustion model. Flame cylinder model Keywords: pollution, combustion, modeling 0D, matlab Result of simple model Result of complex model Contact: jiangbochen45@gmail.com; zhengliang.chen@etu.univ-orleans.fr POLYTECH ORLEANS 70 | STUDENT PROJECTS CATALOGUE 2013/14 Development of a test bench for a miniature turbojet Mechanical engineering Mikael Chevrel / Yi Sui Academic and Indutrial supervisor: Fabien Halter M. Chevrel Institution: The Engineering School of the University of Orléans (Polytech Orléans) Objective/motivation The objective of our project is to develop a test bench for a miniature turbojet for testing its thrust force, temperature of the burned gas, the fuel consumption and the RPM (rotation per minute). The turbojet is used by air crafts which is the most important technique in the field of propulsion. We are going to focus on developing a suitable and reasonable mechanical structure which is able to obtain all the data correctly during the experiment. The entire system is combined with electrical elements that provide the power for starting the turbojet and control all testing sensors, and the mechanical structure. We will use the software PRO-ENGINEERING to design and visualize the conception of mechanical structure. According to that, we are going to build the structure and test the performance of our system in real. Results After 1 month of working on the mechanical design of a structure that can accommodate the turbojet. We have managed to develop a structure that meets our expectations. This structure consists of three parts. First the main frame for fixing the turbojet to where we added a strain gauge for measuring thrust. Secondly, the mechanical and electrical circuit, it is a steel plate on which various essential parts are arranged for the proper functioning of the engine (valve, pump ...). Finally, the man-machine interface which is computer software will control the throttle. With this software we can extract data such as consumption, exhaust gas temperature and engine speed in rpm. The ultimate goal being the creation of a test bench for students, we have designed our system so that students can extract key results in the field of combustion and energy: Power, performance equivalence ratio. Keywords: test bench, turbojet, mechanical structure, combustion System in CAO Electric and mechanic loop Strain gauge Complete test bench Contact: m_chevrel@hotmail.fr; suiyi33@hotmail.com; POLYTECH ORLEANS Y. Sui MECHANICAL ENGINEERING | 71 Draft of an electric light aircraft Energetics Hakim AMRAOUI / Alexandre GOBLET / Christophe MATHEDARRE Academic supervisors: Philippe DEVINANT, Alain BUGEAU Objective/motivation Based on the preliminary research done last year, the draft of an all-electric light aircraft has been refined during the 2013/2014 project period. The aerodynamic performances and stability calculations were computed in order to highlight the hypothetic aircraft viability. The results were cross-checked using various approaches, from theorical to 3D Computational Fluid Dynamics calculations. The outlook for developments in the electric light aircraft sector promises new significant economic and ecological perspectives. Finalizing the draft would therefore be a rich opportunity for students to come. Results By the end of the project, the current electric light aircraft configuration seen on schematic 2 was retained. The wing, vertical and horizontal stabilizer surfaces were optimized for design and drag reduction purposes. The propulsion system has also been defined by two electric motors (Max. Power = 32 kW), each combined with a gear reduction system (gear reduction ratio = 0.5). Lithium-ion polymer batteries located in the wings power the system. Finally, the final electric light aircraft configuration was demonstrated as being stable. The airplane gravity center has been determined at 21.5 % of the mean aerodynamic chord, whereas the aerodynamic center is at 42 % of the same mean chord. The 20.5 % static margin was therefore considered as sufficient for flight comfort and safety. H. Amraoui A. Goblet C. Mathedarre Keywords: draft, electric, light, aircraft, environment Velocity magnitude on the wing profile at an incidence angle of 10˚ General view of the electric light aircraft designed Skin friction coefficient repartition on the aircraft body Contact: hakim.amraoui@etu.univ-orleans.fr; alexander.goblet@etu.univ-orleans.fr; christophe.mathedarre@etu.univ-orleans.fr POLYTECH ORLEANS 72 | STUDENT PROJECTS CATALOGUE 2013/14 Economic MPC for the reduction of energy consumption Environmental engineering Adrien DUBOIS / Dan SUN Academic supervisor: Estelle COURTIAL A. Dubois Company: PRISME Laboratory Objective/motivation This project deals with a control technology named EMPC, which means Economic Model Predictive Control, and its application in terms of energy saving. The control objective is to track an environmental temperature with the least amount of energy consumption. The NMPC strategy is based on a dynamic model of the system which describes the relationship between the input and the output environmental temperature. This model is obtained with the help of the step response of the thermal system. Compared with the conventional PID control, the Model Predictive Control has a better performance in energy saving because it can avoid over-heating of HVAC process .The EMPC takes the cost only into account instead of tracking, so the reference trajectory may not be strictly followed but the cost will definitely be minimized. Then simulation results show the efficiency of EMPC which will be applied to an operating room. Results This project is launched in several steps. The first step is the identification of the dynamic model. It requires some temperature measures and the energy consumption situation in the operating room. The model can be established with several different methods. The dynamic model will be the one that accords the best with the original measures. After the model is built, the control is calculated by the criteria which are the main difference between the classic MPC and EMPC. The criteria are chosen according to different industrial needs like the tracking or the cost. In the last step, a simulation of temperature and energy consumption is made with matlab and a comparison between classic MPC and EMPC shows their different performances in the economic aspect. Keywords: predictive control, EMPC, classic MPC, energy-saving building, thermal model Contact: adrien.dubois@etu.univ-orleans.fr; dan.sun@etu.univ-orleans.fr POLYTECH ORLEANS D. Sun MECHANICAL ENGINEERING | 73 Enslavement of a couple of spoilers Electrical, mechanical engineering Abderrahmane KESSAISSIA / Antonin MUESSER Academic supervisors: Raphael CANALS, Nicolas MAZELLIER A. Kessaissia Company: PRISME Laboratory Objective/motivation The main idea of this project is to develop a system composed of two spoilers to reduce the aerodynamic drag. In fact, some research showed us that putting a couple of spoilers on both sides of a truck allows a better circulation of flow in many circumstances, which means to make the spoilers move together. Our participation in this adventure was focused on proving that it is possible to create such a device. Actually, industrial leaders are interested, but they do not want to invest in it before we can prove that the project is feasible. A. Muesser Results To enslave the two spoilers, we needed to measure the rotation of one of them and transfer the information to the other one thanks to a motor. The original request was to be able to do it on a small existing device. Due to unforeseen events, our supervisor decided to reduce the objectives. The first step was to find the right sensor. It could be difficult to choose a sensor because there are a lot of technologies and specifications you need to take into consideration. Then we built a system to check and characterize the sensor thanks to the mechanical workshop. And finally we checked if the real position corresponded to the information given by the sensor. To conclude, we think that this project taught us to deal with the unpredictable. Keywords: aerodynamics, sensors, spoilers, enslavement We had to find the right We built a system to check the sensor We programmed an electronic card Contact: abderrahmane.kessaissia@etu.univ-orleans.fr; antonin.muesser@etu.univ-orleans.fr POLYTECH ORLEANS 74 | STUDENT PROJECTS CATALOGUE 2013/14 Haptic remote control of six axis robot Electrical engineering Anthony DENIAU / Vincent LELOUP Academic supervisors: Aïcha FONTE, Pierre VIEYRES A. Deniau Institutions: Polytech Orleans, PRISME Lab Objective/motivation The objective of this project is to control remotely a 6-axis robot using a controller with force feedback such as the “Phantom”. The purpose is to allow the relocated students (from other universities) to achieve the remote practical class. The teleoperation is a combination of traditional technology regarding robot control and an advanced communication network. It can be applied to several applications such as teleworking, telemedicine, e-learning, and tele-manufacturing in rigid environments. The greatest advantage of the Phantom device is to allow the user feeling to be present in the distant environment. This feature enables the user to be more accurate which is primordial in some applications allowing the user to avoid damaging the robots, or in the case of telemedicine, to avoid hurting the patient. Results This project is divided into 3 parts: > First part: Control remotely the robot. Write a program which creating a connection following the protocol server/client. > Second part: Modify the teach control by another controller. Adapt the in/out of the new controller. > Third part: Create an application GHOST SDK, for the “PHANTOM” device. Generate the virtual environment and connect the PHANTOM to the robot. Keywords: teleoperation, haptic control, remote control Contact: anthony.deniau@etu.univ-orleans.fr; vincent.leloup@etu.univ-orleans.fr POLYTECH ORLEANS V. Leloup MECHANICAL ENGINEERING | 75 Heat transfer in a gearbox Energetics Mohamed Hafedh BOUGHATTAS Academic supervisors: Eric Blond, Mohamed Malki Industrial supervisor: Jean Philippe Mozziconacci Company: Redex Objective/motivation The aim of this project is to achieve a thermal study on different ranges of gearboxes manufactured by Redex. There are two modes of cooling system; the first is done by water, there is a pump which injects the water in the gearbox. A regulation system is activated when the temperature of water exceeded 25°C. The second mode is done by oil. The purpose of this study is to determine the thermal limits respecting imposed security measures: 80°C inside the gearbox. Results Both oil and water temperature at the inlet and the outlet of the gearbox are provided by Redex. Attempts are made at different frequencies of rotation in both clockwise and counterclockwise directions. The idea is to calculate the heat power evacuated by oil and water; and deduce the full thermal power discharged from the RAM over time. For this we use: Pth h=ρh Dh Cpoil (Te-Ts) (Oil) Pth e=ρe De Cpwater (Te-Ts) (Water) With : ρh : oil density [kg/m3] - ρe : water density [kg/m3] -Dh : oil Flow [m3/h] De : water flow [m3/h] - Cp : specific heat [J/(Kg.K)] - Te : In temperature [°C] Ts : out temperature [°C] Lubrification To achieve our goals, study with and without external torque were done. The study without external torque will help us to seek for the frictional torque (C_f), which will be useful to determine the Beta coefficient (β) related to the load torque given by the second study. We use the following formulas: Pth=Cf ω (Vacuum study) Pth=Cf ω + βCch ω (Study with load) With: Cf : friction coefficient in N.m -Pth: evacuated thermal power W - «ω:» rotation frequency in rad s-1 Keywords: gearbox, thermal transfer, water, oil Gearbox RAM HIT Testbed of gearbox Contact: m.h.boughattas@gmail.com POLYTECH ORLEANS 76 | STUDENT PROJECTS CATALOGUE 2013/14 Improve the range of the spindle drive gearbox motor “Ram Hit” with an electric array Mechanical engineering Romain TABARANT Academic supervisor: Samir ALLAOUI Industrial supervisor: Jean-Philippe MOZZICONACCI Company: Redex Objective/motivation For the final year project, we worked on an industrial subject for the company, Redex ANDANTEX. The item is based on the enhancement of a spindle drive gearbox motor that is used principally in the machine tool for the processing of mechanical parts. The gearbox is equipped with a hydraulic system which commands directly the sliding gear. The company wants a range of gearboxes with an electric system command to offer a wider choice to their customers. So the principal functions we must work on are the changes of the device which command the sliding gear and the suppression of the ball bearing situated between the sliding gear and the output bearing. This ball bearing prevents the gearbox from reaching a speed rotation of 15,000 rpm required by the industry. Results First of all, we had to realize the specifications to target the needs and the obligations for this project. This milestone is really important because it defines whether the project will be viable or not. We have two principal functions which will be the red line to follow for the research of the principles. Then, we did some brainstorming to find ideas of principles complying with the specifications.. Then, we used a table with criteria and levels to target the right choice for our system. Of course, this process has to be done for the two functions described in the previous paragraph. Finally, we came up with two principles which respect the requirements of the project. Keywords: electric command, spindle gearbox, sliding gear Gearbox Ram Hit Inside view of the gearbox Size of the gearbox in the machine tool Contact: romain.tabarant@free.fr; romain.tabarant@etu.univ-orleans.fr POLYTECH ORLEANS MECHANICAL ENGINEERING | 77 Improvement of a computer software for the aerodynamics of thick sails Mechanical engineering Clément PEIGNIEUX / Qichang SUN Academic supervisor: Ivan FEDIOUN Industrial supervisor: Julien Valette C. Peignieux Selected participant 7th Annual Final Year Projects Forum Company: TENSYL Objective/motivation In recent years, in the world of water sports, some categories of sailing permit the use of thick sail profile. The company has an aero-elastic calculation code, which computes the flow around thin profiles by the singularity method ( inviscid flow theory). The firm wants to improve this code by including thick profiles simulations, as required by the new kind of sailing. So, our goal is to develop and improve the existing code to extend it to thick profiles. The work was organized as follows: > Short recall of the method of singularities. > Implementation of the method for a single thick profile. >Validation and comparison with RANS calculations or results of two-dimensional experimental tests. The RANS approach is a technique for quite realistic calculation of aerodynamic flows in industrial configurations. The RANS method takes into account the more physical parameters, so it is more “precise”. > Extending the code to take into account two thick profiles. > Validation and comparison with RANS calculations. Q. Sun Results After we have done the comparison, we find some differences. At small angle of attack, the results of our program are close to those of RANS, but at higher angle of attack the difference between our program and the simulation increase. This is inherent to the underlying, inviscid theory, hence we are very confident in our coding. The advantage of the program is its computational efficiency. If we want to make the whole RANS simulations of all the profiles on a boat, it will take much more time and numerical efforts. Our program can provide the results in a few seconds. The program will help the firm to save money, by fast (although approximate) simulations in the pre-design stage of race sails boats. Keywords: aerodynamics, sailboat, thick sails, numerical simulation, computational fluid dynamics Sailing boat with thick profile Flow 1 Profile Singularities Comparison 1 profile Flow 2 Profiles Singularities Comparison 2 profiles Contact: clement.peignieux@etu.univ-orleans.fr; qichang.sun@etu.univ-orleans.fr POLYTECH ORLEANS 78 | STUDENT PROJECTS CATALOGUE 2013/14 Industrial robotics: handling flasks Electrical, mechanical engineering Vincent CLAUDE / Jorick MARTORELL Academic supervisors: Aicha FONTE, Benoit LE ROUX Industrial supervisor: Jean Philippe LAMBERT Company: CIMI (Centre International de Maintenance Industrielle) Selected participant 7th Annual Final Year Projects Forum Objective/motivation The CIMI has been training companies for over 30 years, proposing services such as production organization, industrial maintenance. The CIMI has recently set a goal in response to growing customer demands, proposing training in the robotics field regarding the “demystification” to the operation and maintenance of robots. The creation of the robotic field responds to a request from the industry which would allow investigating a new market. Consequently, the main challenge of this training center is to make robotic training available to persons. Results To reach this goal, the project consists in designing a robot cell which will support the training specifications. Indeed, a robotic cell already exists which is why our work consists in integrating a new robot in this cell in order to improve training performance. Consequently, our project can be divided into 3 parts: > Design the gripper > Integrate the new robot > Program the robotic cell. Keywords: handling, robotic, programming Contact: vincent.claude@etu.univ-orleans.fr; jorick.martorell@etu.univ-orleans.fr POLYTECH ORLEANS MECHANICAL ENGINEERING | 79 Mechanical behavior modeling of composite materials by a homogenization approach Materials Georges Battestini Academic supervisor: Amna Rekik Objective/motivation The main objective is to use homogenization to predict the effective mechanical behavior of Heterogeneous materials, such as composites that show different mechanical and physical material properties. Thanks to homogenization, the behavior of a heterogeneous material can be determined without expensive testing. Results A step in the process of homogenization is localization which consists in evaluating the local (stress and strain) fields in the material for a given load and phase properties. Such knowledge is important to understand material damage and failure. The methods of homogenization are based on the concept of the representative volume equivalent (RVE). An RVE is understood to be a sub-volume of an inhomogeneous medium that is of sufficient size for providing all geometrical information,necessary for obtaining an appropriate homogenized behavior. Keywords: homogenization, heterogeneous, materials Contact: georges.battestini@gmail.com POLYTECH ORLEANS 80 | STUDENT PROJECTS CATALOGUE 2013/14 Modeling of a human femur fracture Mechanical engineering Yueting QIAN Academic supervisors: Ridha Hambli, Jean-Luc DANIEL Company: PRISME Laboratory Objective/motivation According to a survey, there are 3 million women and 1 million men suffering from osteoporosis in France. The treatment costs up to one billion dollars. In order to better help people to predict the risk of fall or to develop a device to protect the femur, and either give advice of medication based on the detection (strengthen the bone density), many studies are in progress. Therefore the simulation of a human proximal femur behavior has been carried out by the hospital of Orleans in cooperation with laboratory PRISME. The long-term goal is to develop an artificial control diagnostic system. We use the FE model of femur to study its behavior and to predict the fracture when it endures daily loads. Results During the entire project, we have used the software called ABAQUS, which is suited for finite element analysis. For better simulating the fracture, we chose an innovative method XFEM (eXtended Finite Element Method). By the simulation of simple 2D/3D models, we have a preliminary understanding of the new approach and study certain relationship between the crack length and the number of crack. In the simulation of bone model made of iron, the new approach is proved practical by comparing to the actual test results. Since this is a new field which combines clinic and numerical simulation, we need to improve the application constantly and the fracture simulation results show us the way. Keywords: XFEM (extended finite element method), bone fracture, crack propagation One curve of 2D simple model (1 crack) Process of fracture prediction Contact: qianyueting7@gmail.com POLYTECH ORLEANS One result of 3D simple model (5 cracks) One result of femur fracture prediction MECHANICAL ENGINEERING | 81 Modification of a baby model’s water tightness during his re-conception Mechanical, materials engineering Etienne MAYOUX Academic supervisor: Mohammed MALKI Industrial supervisor: Franck DEBRUYCKER Company: Eurofins Ats Objective/motivation The absorption of diapers is tested in laboratories with a robot composed of a model reproducing the body of the baby and a system miming their physiology. During the test, the diaper is subjected to the movement of the model representing various positions of a baby. The diaper is also subjected to a cycle of urination. A leak of synthetic urine at the level of the model will distort the test of absorption of the diaper. The problems of the sealing of the model are owed to the removing of the synthetic latex skin normally applied onto the model and the conception of his mechanism. Leaks of urine will cause the wearing of the steel linking parts. A modification of the positioning of the synthetic skin will be one objective of the study. The re-conception of the automaton will allow optimizing the parts relative to the aggression by the liquid and of the mechanical requests of the test. Results The presence of salt in the test liquid favors two types of corrosion: one by stings and another one under constraints. To mitigate these problems, we have to direct the choice to the parts of the automaton to the use of austenitic stainless steels with strong rate of chromium, nickel and nitrogen. The incorporation of plastic parts such as Teflon in spite of their difficulty of manufacturing was also taken into account because of his weak adhesion and his insensibility to most parts of the liquid. Sticking the skin onto the model is only is only partly meeting our expectations. The choice of a skin to connect the legs and the trunk was a better compromise between a complete skin and an incorporation of the skin in latex into the shell of the model. Keywords: robot, diapers, failures, baby Contact: etienne.mayoux@etu.univ-orleans.fr POLYTECH ORLEANS 82 | STUDENT PROJECTS CATALOGUE 2013/14 Optimization of centre sciences heat pump Energetics Robin CLERMONT / Clément GRAMUSSET Academic supervisor: Jean-Michel FAVIE Industrial supervisor: Guy-Antoine DUFOURD R. Clermont Company: Centre Sciences Objective/motivation The goal of this project is to optimize the Centre Sciences heat pump. This project is carried out in the context of 4 chapters (or chapter 4 of Action 21. Action 21-is a non-binding, voluntarily implemented action plan of the United Nations with regard to sustainable development. After some calculating we notice that the heat pump is oversized. So we decided to improve the heat pump utilization with an inertial storage. We have done some numerical simulations to accurately calculate the energy available, the time of availability and the utilization of to conclude our project, we would like to design a practical work to bring out the importance of inertial storage. Results The approach we used to make our project is as follows. First, we determined the available power of the heat pump which could produce 20 kW Centre Sciences in the worst case. The use of the heat pump by Centre Sciences is utilization sinusoidal on one day. The minimum is 3 kW and the maximum is 10 kW. The available power is the difference between the power of the pump and the use of it by Centre Sciences. Then we have a daily sized inertial storage. We had to determine the heat loss of bank. Thanks to this information and the storage temperature we can calculate the power available in storage. With this power available, we could add energy on some flat. These inputs are renewable energy and permit the residents to save on electricity. Contact: robin.clermont@yahoo.fr; clementgramusset@live.fr POLYTECH ORLEANS C. Gramusset MECHANICAL ENGINEERING | 83 Optimization of the valve of an air balloon Mechanical engineering Thibault BAGOT Academic supervisor: Gilles HIVET Industrial supervisor: M. WAYMEL Company: Private individual Selected participant 7th Annual Final Year Projects Forum Objective/motivation The objective of the project is to improve the valve of a gas balloon which permits freeing the gas out of the balloon. Indeed, when it is pulled, the balloon goes down. The project aims to reduce the weight and improve the gas tightness. Moreover, it is a security issue, indeed, the balloon will collapse if it stays open. The client participates to global competitions and the weight of his wood valve is not competitive. It is 7kg, the goal is therefore to obtain a 2kg valve and make easier its opening. Results Currently, the preliminary design is done and the detailed design has been partially completed. All technical specifications have been determined and two architecture emerged. The project will be continued by another 4th year student who will work on the optimization of the weight and will manufacture both prototypes in order to choose the best. Keywords: valve, air, balloon, optimization Contact: thibault.bagot@etu.univ-orleans.fr POLYTECH ORLEANS 84 | STUDENT PROJECTS CATALOGUE 2013/14 Hybrid vehicle with energy management system Electrical, thermal engineering Maxime Lienhart / Guannan Liu / Maxime Texier Academic supervisors: Guillaume Colin, Yann Chamaillard Industrial supervisor: Thomas Miro Padovani Institution: Renault M. Lienhart Selected participant 7th Annual Final Year Projects Forum Objective/motivation Our purpose is to create and develop an energy management program with Matlab/Simulink software. Indeed, the goal is to reduce the fuel consumption of the previous Scénic engine version and thus to get the same or less than new Scénic engine fuel consumption. To achieve this purpose we have decided to design a hybrid model vehicle with a motor associated to an engine. Besides, we could create a generator random driving cycle application to see the robustness of energy management strategy, and therefore to get a better estimation of the fuel consumption to reduce the difference between theoretical consumption and real consumption. Last but not least, we could model the different dispersions due to the characteristics of the engine, to know whether these dispersions have an important impact on the vehicle consumption or not. G. Liu M. Texier Results First of all, we have got interesting results with the energy management program that we have inserted in our model vehicle; in fact the previous Scénic engine had a fuel consumption of 8.3l/100km on NEDC cycle against 6.0l/100km with our energy management strategy. We have respected the purpose because the new Scénic engine consumes 6.4l/100km therefore we are below this fuel consumption. Then, we have created the generator random driving cycle application which will be available on Orleans’s University website. Finally, with a dispersion module we have obtained a variable fuel consumption compared to the dispersions model from engine estimated between 3% and 20%. At last we have added the driver module to allow regulating the vehicle speed and to simulate the actual driving process. Hybrid poster for the “Forum des projets” Keywords: hybrid, consumption, energy management, simulation ECMS hybrid model ECMS hybrid dispersion model ECMS hybrid dispersion driver model Contact: maxime.lienhart.etu@gmail.com; lgn880425@gmail.com; maximetexier.polytech@gmail.com POLYTECH ORLEANS MECHANICAL ENGINEERING | 85 Potential of Superhydrophobic surface treatments in hydrodynamics Mechanical engineering Mathieu BERNARD-LALANNE / Brian CHANTOMAUD Academic supervisor: Nicolas MAZELLIER Third Place 7th Annual Final Year Projects Forum M. Bernard-Lalanne Innovation Prize , “Les Cordées de la Réussite” Prize Objective/motivation Drag is a side effect phenomenon that every nautical surface needs to cope with. In some cases, it can be seen as the energy loss that needs to be wasted in order to keep the boat from sailing forward. Friction drag is its water/structure interface component. Our study was focused on reducing this friction drag in order to increase the overall performance of different materials used in water-friendly appliances. However the durability of the treatment has also been an important issue, providing relevant information concerning a potential industrialisation for specific uses. B. Chantomaud Results Our study has brought evidence of a strong increase in velocity through the boundary layer zone, thanks to the surface treatment chosen. Durable Water Repellent (DWR) properties have also enlightened extended lifetime resistance for surfaces regarding weather and environmental aggression. Extending lifetime resistance is a key factor to allow a global expansion of this technology. Although different testing methods were specially developed in order to determine the friction drag gain regarding Stokes’ Hypothesis, a more accurate and long-term experimental process should give more valuable results that would indeed help in decision making for large industrial scale projects. Keywords: superhydrophobic, nautism, friction, drag, fuel saving VBO : Clean plain glass without any treatment VBT : Glass with a Teflonbased surface coating VBE : Glass with a Ultra Ever-Dry surface coating ABO : Clean plain Aluminum without any treatment ABT : Aluminum with a ABE : Aluminum with an Ultra Teflon-based surface coating Ever-Dry surface coating Contact: mathieu.bernard-lalanne@etu.univ-orleans.fr; brian.chantomaud@etu.univ-orleans.fr POLYTECH ORLEANS 86 | STUDENT PROJECTS CATALOGUE 2013/14 Robotic youth challenger Electrical engineering Benoit Le Grumelec Academic supervisors: Aïcha FONTE, Nicolas MORETTE, Cyril NOVALES Institutions : Polytech Orleans, PRISME Lab Objective/motivation This robotic project was proposed by the ANR (National French) Research Agency) PROTEUS as a student challenge. The challenge was to implement the autonomous navigation of a robot. To have such autonomy, the challengers had to work on obstacle detection and avoiding them, mapping, visual recognition, localization, and navigation. For this project we had worked on the Wibot, a robot composed of a variety of sensors (a laser scanner, an inertial measurement unit, a GPS, a magnetic compass, a camera HR and proximeter infrared, Kinect). We were also able to work on a virtual simulation platform composed of several software programs dealing with Ubuntu 12.04. The robot and simulation were programmed by a real time Middleware named, RTMaps. Wifibot modeling Results The first stages of the project were the integration of the mobile robot mechatronics Wifibot (Changing the motherboard, the inertial unit, adding a kinect sensor). These changes resulted in the need of a long software integration stage. The expected result is a control program for the Wifibot scenarios challenge, a document for the handling of the various programs, and a procedure for changing some components. Keywords: robotics mobile, C programming Wifibot Contact: benoit.le-grumelec@etu.univ-orleans.fr POLYTECH ORLEANS MECHANICAL ENGINEERING | 87 Simulation and performances testing for new position sensor bearing concepts for electrical engines control Mechanical engineering Omar AKOUM / Rabih TALEB Academic supervisors: Bruno BONHEUR, Jacques FANTINI, Jean GILLIBERT Industrial supervisors: Bénédicte LAROCHE, Pierrick MAZÉ O. Akoum Company : SKF France S.A Objective/motivation A bearing is a mechanical product destined to reduce friction cause by an object rotating inside another one. A sensor bearing adds another function that is to allow communication of speed or position of the internal ring (the moving ring). Such function is enabled by magnetism. The sensing part is composed of two rings linked each to one of the bearing rings. The internal ring is composed of magnet(s). The magnetic field, generated by the internal ring, is detected by the sensors integrated in the external ring. The information is transmitted to an electronic circuit that creates an appropriate output signal depending on the customer interface. Our task is to compare the different sensing, output methods and Top-Z solutions in order to have a competitive product. R. Taleb Results Multiple methods exist for sensing resulting in multiple types of sensor bearings with different sensing technologies: Hall Effect, GMR, AMR and TMR. These cells are to deliver an electrical response according to the magnetic field facing them. Treating this electrical response allows, through different output methods correspond: PWM, A B (Z), sin/cos, communication of speed. An additional option that is to be integrated in the sensor bearing is a Top-Z (Mechanical or magnetic) that allows an absolute motion sensing. Most of these need the integration of another sensor and even a second magnetic ring. This allows counting of turns. We are also to design the necessary tooling for testing the chosen solutions as well as implementing a “Design of Experiment” protocol associated to the testing procedure. Keywords: bearing, sensor, top-Z, magnetic, speed Contact: omar.akoum@etu.univ-orleans.fr; rabih.taleb@etu.univ-orleans.fr POLYTECH ORLEANS 88 | STUDENT PROJECTS CATALOGUE 2013/14 Simulation of what happens to a person’s femur during a fall, taking muscle amortization into account Mechanical engineering Sylvain Girard Academic and Industrial supervisor: Ridha Hambli Company: CHR Orléans Objective/motivation I chose this project because I want to work in the health field. Indeed, since birth my mother has suffered from hip problems called Brittany hips. This means that the person who has it has a congenital dislocation of the hip. It could be due to a small diameter of the head of the femur or because it reduces with time. The risk of fracture is high. In addition, this project is cross-disciplinary grouping the electrical, mechanical and materials fields. And for an engineer it is important to have knowledge in these sectors. I am working on this project alone which is a new experience for me. There were six of us in my last project in which I was the manager. In order to improve my technical skills, I decided to work on this project. Results The test bench simulating free fall of human femurs with consideration of muscle amortization already exists thanks to an engineering team from the University of British Columbia, Vancouver, British Columbia, Canada. The CHR d’Orléans desires to have the same kind of machine to study hip fractures. The bench has to simulate the fall of an elderly person. The design and instrumentation are finished. Much iteration for the finite element method on CATIA V5 was done to determine the best design for the whole bench. The sourcing of components is done as well as the materials in order to complete the project. The only thing which is missing is the price of all the components due to suppliers taking too much time to respond. Keywords: impact, femur, fracture, prevention, elderly Schematic of the test bench achieved by Columbia Contact: sylvain_girard@live.fr POLYTECH ORLEANS Photography of the test bench showing components (achieved by Columbia) Representation of a femur MECHANICAL ENGINEERING | 89 Study of the drapability of flax reinforcements Materials Alice GOMBAULT Academic supervisor: Pierre OUAGNE Institution: PRISME Laboratory Selected participant 7th Annual Final Year Projects Forum Objective/motivation The goal of this project is to test and characterize the ability to shape forming of flax woven fabrics, as well as their ability to deform without causing defects like unweaving, buckles, wrinkles or gaps for example. To determine which the best conditions for the forming are, we will test the different machine parameters (holding-down pressure, the orientation of the tissues, etc.) as well as other conditions such as humidification of the tows. We will also consider the application of a casting mold (lid) during our test to consider the real terms of stamping. We will use a stamping device provided with devices measuring deformation without contact (such as the method of tracking markers with a camera, the aim of imaging analysis). Results The main result of this study is that the orientation influences the deformations in the main wick. In fact, the elongation is less important in the main warps (0°) than in the main weft (90°). Then, at the opposite we thought, the deformations decreased with the humidity. The application of a casting mold is important to improve the quality of the shape and shade the defects. Keywords: fabric, flax, preforming, stamping, natural fibers Contact: alice.gombault@etu.univ-orleans.fr POLYTECH ORLEANS 90 | STUDENT PROJECTS CATALOGUE 2013/14 Study of the thermomechanical behavior of a ladle Mechanical engineering Fazati Bourahima Academic supervisor: Alain Gasser Industrial supervisor: Pablo Galliano Company: Tenaris Siderca, PRISME lab Selected participant 7th Annual Final Year Projects Forum Objective/motivation This project is a collaboration between the laboratory PRISME in Polytech’Orleans and a company based in Campana, a province of Buenos Aires. The company’s name is Tenaris Siderca, working on refractory materials. This company is part of a federation called FIRE (Federation for international Refractory’s Research and Education). FIRE is a university and private-sector; non-profit organization specialized in the development and use of refractory materials. This project consists in the study of a ladle. A ladle is, in a foundry, a vessel used to transport and pour out molten metal. This ladle is composed of Al2O3 (refractory), brick (refractory) and steel. The aim of this project is to define a gap between the two refractory materials composing the ladle. This study will allow us to observe the influence of this action. Ladle in activity Results The procedure is to define a reference model and then modify the gap (constant gap and non constant gap…). For the moment we have obtained a thermal result with the reference model. We have noticed that the temperature is higher when we analyze the refractory in contact with the molten metal and the temperature for the other materials which are not in contact with the molten metal. The heat flux is conveyed between all the materials composing the ladle. Ladle in activity The linings of a ladle The linings of a ladle Contact: fazati.bourahima@etu.univ-orleans.fr POLYTECH ORLEANS MECHANICAL ENGINEERING | 91 Study of yarn bending Materials Théo LE PALEC Academic supervisors: A.Wendling, J.Gillibert Institution: PRISME Laboratory Objective/motivation Nowadays, manufacturers are increasingly interested in integrating composite parts into their products because of the high strength to weight ratio. This type of materials are composed of two parts : the resin, which ensures the cohesion of the material and a dry fabric. In order to build numerical simulations, it is necessary to have precise models of the mechanical behavior of dry fabrics. These models are obtained from experimental tests on yarns, which compose the dry fabric, in order to define parameters of the behavior law. The bending is one of the privileged sollicitation because it appears as soon as the fabric is solicited. At the end the perspective is to be able to create predictive models representing a complex shape of composite and avoiding the experimental work slow and expensive. Results Currently the simulation models is created with the good boundary conditions, and a satisfying meshing. It has to be improved in order to give accurate results as quickly as possible. results are essential to be sure to have accurate results. Experimental work is in process. Results are quite dispersed but we are working on other ways to determine the bending of a yarn by adding mass. Keywords: composite, bending, yarn, simulation Image from experimental bending test Result of displacement obtained with the numerical model Coil of glass yarn Contact: theo.le-palec@etu.univ-orleans.fr POLYTECH ORLEANS 92 | STUDENT PROJECTS CATALOGUE 2013/14 The Canadian well as a solution for a natural supply of energy for air treatment Energetics Sara AABID / Hind El Ghali Academic supervisor: Jean Michel Favie Objective/motivation The goal of our project is the study of the relevance of the Canadian well as a natural energy input solution for air treatment. Air renewal may represent about 30% of energy loss in a building. So is it desirable to pretreat the air or to use a renewable heating solution? In order to answer this question, we had to analyze the energetic balance of the Canadian well according to geographical and meteorological conditions and to create a tool to determine the energy gains generated by the well depending on its dimensions. Results > Definition of the characteristics of the building studied > Calculation of the energy loss with and without the Canadian well > Finding the appropriate material for the pipes > Sizing the pipe system by developing Excel worksheets that had to be flexible to allow for the variation of a large number of parameters: One parameter was used to calculate the pipe length, by varying the diameter and thickness as well as the time period for air renewal , the other was used to calculate the air speed inside the pipes with the diameter, the ventilation rate and the number of buried ducts. > Elaboration of a preliminary estimate for the Canadian well installation Keywords: dimensioning, heat loss, pressure drop, piping, energy consumption Building plan House BBC Sizing well Contact: sara.aabid@etu.univ-orleans.fr; hind.el-ghali@etu.univ-orleans.fr POLYTECH ORLEANS S. Aabid H. El Ghali MECHANICAL ENGINEERING | 93 Thermal-mechanical research of refractory lining with joints Mechanical engineering Xiaolu HA Academic supervisors: Jean-Luc DANIELIN, Alain GASSER Company: Tata Steel Objective/motivation Refractory bricks are wildly used in industries dealing with high temperature. Because the refractory bricks are part of the masonry structure, not only the brick material properties should be considered, but also the properties of the joints. This research aims to model the refractory structure from a steel ladle in two different methods: the Finite Element Modeling and Discrete Element Modeling. Results For the FEM, a homogeneous material was considered taking into account the behavior of joints. A subroutine in FORTRAN language was used to approach the reality. For the DEM, a basic research was performed to be more familiar with this method. Different software was compared. The movements of joint state from three different masonry designs were obtained. There are Parallel, Radial and Fish Bone masonry designs. Stress of the steel plate was computed. The simulation result would bring great convenience to the design of the steel ladle. Keywords: refractory lining, joint, masonry, FEM, DEM Movement of the state of joints Contact: xiaolu.ha@etu.univ-orleans.fr POLYTECH ORLEANS 94 | STUDENT PROJECTS CATALOGUE 2013/14 Thermo-mechanical modeling of a complex structure Mechanical engineering Yassire HASSOINE Academic supervisors: Eric BLOND, Alain GASSER Industrial supervisor: Nicolas RICHET Company: Air Liquide Objective/motivation A heat exchanger is a piece of equipment built for efficient heat transfer from one medium to another. The media may be separated by a solid wall to prevent mixing or they may be in direct contact.It is composed of parting sheets, fins, cap sheets and headers. Due to the complex structure, the evaluation of the structure integrity under high pressure, temperature gradient, is very difficult. Mechanical design of heat exchanger is very complicated but critical for high pressure heat exchangers. Homogenization of structures is a methodology to simplify the modeling of complex structures that could not be simulated. The properties of a heterogeneous orthotropic material equivalent to the complex structure are calculated and substituted for the thermo-mechanical calculation. The homogenization is based on a Representative Volume Element (RVE). The definition of the RVE is the first and important step. To be representative of their distribution in this material, RVE must be of sufficiently size compared to the size of the material heterogeneities. However, RVE must be small enough to reduce the model to a size that can be calculated. After this step, three calculation steps must be done taking into account conditions at the limits: periodicity, which supposes that the elementary volume considered in the study is connected to a repetition of similar volumes: > Calculate the strain energy of the heterogeneous RVE. > Calculate the strain energy of the homogeneous RVE. > Determine the parameters of the stiffness tensor of the homogeneous RVE. Results After having determined the equivalent material that will replace the fins, we must ensure that its mechanical behavior is similar to the initial structure. For this reason, we have performed thermomechanical simulations (taking into account operating conditions of the exchanger) on the real model and the model built from the homogenization. There after, solutions are compared. If it turns out that the results are similar, the model is accepted and used to design the heat exchanger. Otherwise, some adjustments are made in the choice of the RVE and level calculations. Keywords: heat exchanger, model-homogenization of structures, loads, thermo, mechanical Structure of heat exchangers Strain energy calculation Contact: yassire.hassoine@gmail.com POLYTECH ORLEANS Principle of homogenization of structures MECHANICAL ENGINEERING | 95 Understanding the transformation phenomena of olivine phase Materials Charlotte Pessereau Academic supervisors: Mohamed-Ramzi AMMAR, Rudy MICHEL Company: CEMHTI CNRS Objective/motivation Olivine is an abundant raw material widely used in various domains, owing to its chemical and physical properties. However, when subjected to high temperature, olivine undergoes several transformations phases which are not completely understood. The basic idea of the present work is to study two phenomena that occur inside the material. The first is the transformation of hematite into magnetite. The second is the understanding the two kinds of magnetite structures, inverse spinel, direct spinel and their transformations. This work is divided into two parts. A theoretical work which consists of bibliographic research and an experimental work consisting of sampling preparations and their characterization by Raman microspectroscopy. Results Several trials were conducted, we could highlight the transformation from magnetite into hematite and this trial confirmed the literature. This transformation operates between 500°C and 650°C. It’s more complicatedfor the two kinds of magnetite structure, , since the literature contradicts oneself. Basically, this transformation depends on pressure and temperature but the mechanism involved in this change appears to be complex and not clearly explained by the scientific community up to now. Our experiments showed a dependence of the resulting Raman signal on the excitation laser wavelength used and therefore additional characterizations are needed to elucidate this behavior. Keywords: magnetite, hematite, raman, normal and inverse spinel Contact: charlotte.pessereau@etu.univ-orleans.fr; charlottepessereau@ymail.com POLYTECH ORLEANS 96 | STUDENT PROJECTS CATALOGUE 2013/14 Upgrading an experimental tool sprayer Electrical, mechanical engineering Alexandre LEBEGUE Academic supervisor: Jean-Marc Aufrère Industrial supervisor: Benjamin Perriot Company: Arvalis Objective/motivation Arvalis Institute, sponsor of this project, conducts research on the techniques of spraying pesticides on behalf of farmers. The aim is to achieve spraying with different concentrations of mixture, speeds and varying pressures (which define the volume applied per hectare). These sprays are used to verify the effectiveness of pesticides on crops in different concentrations. Up to now, the company has been directing the sprays from planes using a bench spray. The current bench spray does not have enough speed to get closer to current technics. The spraying rate cannot go low enough. The width of the bench is also too small. Therefore, for this project, I must fully redesign a bench that corresponds to the technics used by farmers. Results The new bench is designed to apply phytosanitary mixture over a width of 3 meters. Currently, the farmer sprays the porridge up to speeds of 35 km / h. The main challenge of this project is to attain a high speed. It is therefore necessary to accelerate the ramp to treat plants at a constant speed with a ramp 10 meters. The current solution guides the ramp using a ball socket. It is no longer possible because of the low speed. The chosen solution is the guide rail sliding. This reduces the inertia of the ramp due to the lightness of the guide. An electric motor with an associated timing belt transmits the power required to move the boom sprayer. Keywords: fixed bench, arvalis, tool sprays, sprayer, experimental bench An overview of the bench spray Contact: alexandre.lebegue@etu.univ-orleans.fr POLYTECH ORLEANS MECHANICAL ENGINEERING | 97 What is the energetic performance of my house? Energetics Nadir BOUZAR / Thomas MELOT Academic supervisor: Jean Michel FAVIÉ N. Bouzar Selected participant 7th Annual Final Year Projects Forum Objective/motivation The thermal policy RT 2012 set new energetics consumption and forces energetic diagnosis for construction. The project is in line with this context. Indeed, the aim is to realize an energetic diagnosis (called DPE) with a thermal camera in order to estimate the energetic consumption of a habitation. Nowadays, the current energetic diagnosis is long and complicated because the process leads to a lot of assumptions about the house. The project proposes to develop a new method using thermal cameras which rapidly determine the consumption with an error rate set by the camera and the weather conditions. The goal is to assist people to quickly estimate their consumption and to encourage energetics renovations. T. Melot Results First we have determined a new measuring protocol with the thermal camera in order to minimize error rate on the consumption estimation. This protocol has been obtained thanks to several measurements executed at different times of the day. The best estimation of the consumption can be evaluated with a 20 % error rate which is interesting because much time was gained. Compared to a DPE, this method is easy, quick and gives a great estimation of the consumption. Energy classification Keywords: diagnosis, energy, performance, quick, termography Thermal picture of a house Measure protocol Contact: nadir.bouzar@etu.univ-orleans.fr; thomas.melot@etu.univ-orleans.fr POLYTECH ORLEANS 98 | STUDENT PROJECTS CATALOGUE 2013/14 Practical work of thermal regulation of a building Smart buildings Erkan KESKIN / Sylvain PEREZ / Anthony RENAUDIE / Yanne VERMONT Academic supervisors : Christian CAILLOL, Guillaume COLIN M.Keskin Bendriss-Amraoui E. Institution: The Engineering School of the University of Orléans (Polytech Orléans) Objective/motivation Due to the reform of the TEAM speciality, the ME professors have decided to create a simulated trial (ST) dealing with the thermal regulation of buildings. It will involve two fields: automatism and the thermal performance of buildings. To reach this objective, a house model representing a real one was built. To simulate reality, the model underwent different disturbances for a ST duration, such as the sun, wind... For example, sunshine is a disruption which impacts the thermal state of a house and must be simulated in the ST. Results Concerning the thermal aspect, the thermal inertia and the heat transfers have to be respected to keep the same thermal dynamic effects as in a real house when it is exposed to disturbances during a typical day. Several types of insulation can be treated by changing the model’s walls. A thermal numerical simulation was created and allowed us to choose the different materials which constitute the house model. The next step consisted in working on the automatisms. Electronic components (halogen spotlight, fans, heating resistors...) were chosen to simulate the sunshine, wind and exterior temperatures (in summer and winter cases). All those disruptions had to be controlled by a computer, thanks to an automatism program. Finally, a 3D-model was created to facilitate the future building. Keywords: regulation, automatism, thermal performance of buildings, smart buildings Model of the project Contact: erkan.keskin@etu.univ-orleans.fr; sylvain.perez@etu.univ-orleans.fr; anthony.renaudie@etu.univ-orleans.fr; yanne.vermont@etu.univ-orleans.fr POLYTECH ORLEANS S. Perez A. Renaudie Y. Vermont 100 | STUDENT PROJECTS CATALOGUE 2013/14 The Final Year Projects Forum Each year, students who are completing their final year of studies at Polytech Orléans compete to participate in the Final Year Projects Forum under the direction of Jean-Jacques Yvernault. Students may present their projects individually or in groups, after which a selection is made by each department head of those projects which will compete before a jury of knowledgeable professionals from businesses and institutions in the wider community. During the Forum, each student or group of students presents the project over the course of an entire day, beginning with a general assembly during which a brief oral description and PowerPoint® presentation is made. This is followed by in-depth discussions with each jury member at individual stands constructed by the students, where they are able to give a more detailed explanation of their work. The jury selects and makes an award to each of the three best projects of the Forum. The Final Year Projects Forum promotes the relationship between the school, its students and the business community and allows students to make direct contact with those companies who might wish to recruit graduates in their field. For a list of all participants in the Final Year Projects Forum of 2014, please see page 103. POLYTECH ORLEANS STUDENT PROJECTS CATALOGUE 2013/14 | 101 Our remarkable equipment Wind Tunnel The Lucien Malavard wind tunnel of the PRISME laboratory is used by Polytech Orléans students for aerodynamic systems studies typical of the automobile, aeronautics and environmental industries. Those who specialise in these fields have the opportunity to do their practical work and projects in this exceptional environment. Clean Room A class 10,000 clean room of 100m2 is in service at the GREMI laboratory of Polytech Orléans. Students working in the Ecotechnologies, Electronics and Optics specialty carry out their practical work study projects in micro/nano-technologies and plasma processes in this facility. Engine Test Benches The engine test benches of the PRISME laboratory are used by Polytech engineering students and by students of the international Master’s degree “Automotive Engineering for Sustainable Mobility” for projects and practical work in the fields of combustion, energy efficiency, pollutant formation and engine control. Computer science labs and WiFi network Polytech Orléans provides twelve self-service computer science labs with 300 computers and all necessary software for the use of its engineering students for lessons, projects, and personal work. WiFi access points are available in Polytech facilities and on campus for internet connection using laptop or tablet computers and smartphones. Robots Polytech Orléans has both industrial and domestic robots for use as part of the robotics coursework. POLYTECH ORLEANS 102 | STUDENT PROJECTS CATALOGUE 2013/14 Index of students AABID Sara92 ABERDIN, Yahia62 ABSOLONNE, Quentin36 Ailloud, Quentin 27 AKOUM, Omar 87 AMRAOUI, Hakim 71 Avril, Maxime 13 BAGOT Thibault 83 BARBAULT, Melissa 54 BARGHACHI, Abdelkrim 53 BATTESTINI, Georges 79 BERNARD-LALANNE, Mathieu 85 Bethi Kamar 32 Bosquet Mathieu 21 BOUGHATTAS, Mohamed 75 BOULANGER, Marie 28 BOUKRISS, Chahid 55 BOURAHIMA, Fazati 90 Boutoille, Clément 26 BOUZAR, Nadir 97 BROSLER CALTABIANO, Melina 39 CALLERI, Quentin 42 CLAUDE, Vincent 78 Charvin, Antoine22 Chavanon, Alexandre 10 CHAMPION, Kévin 65 CHANTOMAUD, Brian 85 CHARMES, Kévin 68 Caudron, Jérémy 14 CHEN, Jiangbo 69 CHEN, Zhengliang 69 CHEVALLIER, Quentin 46 CHEVREL, Mickael 70 CLERMONT, Robin 82 CONSTANTINE, Adolphe 57 Daclin, Romain 15 DAOUDI, Amine 63 DE ALMEIDA, Alexandre 34 DELAGE, Maxime 44 DENIAU, Anthony 74 DESENFANS, Florian 65 DESMETTRE, Olivier 30 DONEY, Nicolas 35 DUBOIS, Adrien 72 DUFOUR, Timothée 54 DURAND, David 64 EL GHALI, Hind 92 El Mourabit, Abdelbassat 11 El Mekkaoui, Asmae 61 POLYTECH ORLEANS ETTAKHCHI, Yacine 34 Fall, Fatou 32 Feng, Yunlong 18 Finot, Benjamin 12 FOUGERON, Nicolas 45 FRIARD, Charlotte 46 Garnier, François 10 GILLOT, Arnaud 36 GIRARD, Sylvain 88 Gondek, Thaisa de Fatima 39 Gnali, Guendiya 61 GOBLET, Alexandre 71 GOMBAULT, Alice 89 GRAGY, Julien 66 GRAMUSSET, Clément 82 GRU, Flavien 66 Guannan, Liu 84 HA, Xiaolu 93 HASSOINE, Yassire 94 HEHOMEY, Hermane 42 HELION, Kévin 64 HILAIRE, Alice 41 HINAULT, Gary 24 HURET, Benoît 57 JARRY, Guillaume 47 JUCHAT, Elodie 38 KESKIN, Erkan 98 KESSAISSIA, Abderrahmane 73 KLINGEMANN, Elie 67 LANCON, Arnaud 44 LEBEGUE, Alexandre 96 LE BILLER, Pauline 43 LE FEUVRE, Gaetan 48 LE GRAND, Paul-Emmanuel 48 LE GRUMELEC, Benoit 86 LELEU, Anthony 52 LELOUP, Vincent 74 LE PALEC, Théo 91 Le Quere, Christophe 11 Li, Yunpeng 51 Lienhart, Maxime 84 LIU, Xiao 16 MANSOURI, Monsif 40 MARTIN, Adrien 55 MARTORELL, Jorick 78 MATHEDARRE, Christophe 71 Mayoux, Etienne 67, 81 MELOT, Thomas 97 MICELI, Alexia 37 MINON, Anouk 43 MUESSER, Antonin 73 Noel, Benjamin 24 Pallavidino, Florian20 PASSOT, Kevin 47 PEIGNEUX, Clément 77 PEREZ, Sylvain 98 PESSEREAU, Charlotte 95 PLESSIS, Cédric 35 PODWOJEWSKI, Marie 49 PRIOUX, Corentin 41 QIAN, Yueting 80 REIS, Mariana 31 RENAUDIE, Anthony 98 RENTE, Adeline 33 REPUSSEAU, Julie 37 RIBEIRO, Fernando 56 RIGAUD, Victoria 38 Roessner, Joel 19 Rybinski, Marc-Edouard 28 SAADAOUI, Fatima Zahra 67 SAHLI, Hamza 40 Seeli, Benjamin 20 SIGMUND, Gatien 52 SINET, Sébastien 49 Snabi, Khalid 23 SOMBIE, Souleymane 63 SOUDAN, Nicolas 33 SUI, Yi 70 SUN, Dan 72 SUN, Qichang 77 SUZIN, Laury 60 TABARANT, Romain 76 TALEB, Rabih 87 TANGUY, Christophe 51 TAVARES, Luisa 50 Texier, Maxime 84 THIVOLLE, Chloé 50 TOURON, Margot 31 Trigosse, Juliette27 Urien, Mélanie 25 VACELET, Virgile 30 VERMONT, Yann 98 Violet, Nicolas 25 YAMANI, Yasmine 45 ZAHAYER, Zakaria 53 ZEMMIT, Ali 62 Zhang, Ke 17 STUDENT PROJECTS CATALOGUE 2013/14 | 103 Index of participants in the Final Year Projects Forum Index of participating enterprises AILLOUD, Quentin27 BAGOT, Thibault83 BARBAULT, Mélissa54 BERNARD-LALANNE, Mathieu 85 BOSQUET, Mathieu 21 BOULANGER, Marine 28 BOURAHIMA, Fazati90 BOUZAR, Nadir 97 CHANTOMAUD, Brian 85 CHARVIN, Antoine 22 CHAVANON, Alexandre 10 CLAUDE, Vincent 78 DONEY, Nicolas35 DUFOUR, Timothée54 GARNIER, François 10 GOMBAULT, Alice 8 HINAULT, Gary 24 LE FEUVRE, Gaëtan 48 LE GRAND, Paul-Emmanuel48 LIENHART, Maxime 84 LIU, Guannan 84 MARTORELL, Jorick 78 MELOT, Thomas 97 MICELI, Alexia 37 NOEL, Benjamin24 PEIGNEUX, Clément 77 PLESSIS, Cédric 35 REIS, Mariana 31 REPUSSEAU, Julie37 RYBINSKI, Marc-Edouard 28 SUN, Qichang 77 TEXIER, Maxime 84 TOURON, Margot 31 TRIGOSSE, Juliette 27 ADM Projets53 Air Liquide94 Arvalis96 Baudin Chateauneuf34 CEMTHI 60, 95 Centre Sciences 82 CETRAHE 30, 41 CHR Orléans 88 CIMI 78 CNRS 60, 95 Cosmeurop 19 CRESITT13 CRMD 54 Delphi 12, 62 Deshyplus 49 DREAL Centre 46 EBI 45 Eurofins Ats 67, 81 Gâtinais Biogaz31 GDR 2502 61 GREMI Laboratory 11, 14, 16, 20 23, 25, 26, 28 Hhconseil 36, 37 INTEVA Products 63 IRIS Conseil35 IUT Orléans65 Lasoptic 20 La Ligérienne 38 MAQUET Polytech Orléans 22, 24, 27, 28, 42 47, 66, 70, 74, 86, 98 PRISME Laboratory 39, 61, 62, 68 72, 73, 74, 80 86, 89, 90, 91 Redex 75, 76 Renault 69, 84 SARL The Cameroscope 10 SKF France S.A 87 Spectra-Physics 20 ST Microelectronics 26 Tata Steel93 Tenaris Siderca 90 TENSYL 77 Town Council of Orléans 41 1st place 2nd place 3rd place POLYTECH ORLEANS UNIVERSITE D'ORLEANS Polytech Orléans School of Engineering of the University of Orléans 8 rue Léonard de Vinci, 45072 Orléans cedex 2, FRANCE www.polytech-orleans.fr