2142-391 Engineering Mechanical Laboratory
1
Instructors
Monday Sections (1-6)
Friday Sections (7-13)
Asst. Prof. Kanit Wattanavichien (KWC)
Prof. Somsak Chaiyapinunt (SCP)
Asst. Prof. Boonchai Lertnuwat (BLN)
Asst. Prof. Kanit Wattanavichien (KWC)
Lect. Thanyarat Singhanart (TSN)
Lect. Chanat Ratanasumawong (CRW)
Asst. Nopdanai Ajavakom (NAV, Mon)
Lect. Alongkorn Pimpin (APP)
Lect. Phongsaen Pitakwatchara (PPT)
Lect. Pairat Tangpornprasert (PTP)
Lect. Sawat Luengruengrit (SLR)
* Asst. Nopdanai Ajavakom (NAV, Mon)
* Assc. Prof. Asi Bunyajitradulya (ABJ, Fri)
* Lab coordinator
* Lab coordinator
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Course Objectives

Introduction to experimentation as a means to acquire knowledge.

Practice applying prior knowledge and basic principles together with experimentation
to physical systems in order to


gain better understanding of learned basic principles,

gain further knowledge.
Introduction to some basic mechanical and automotive systems, their underlying
principles, and how they work.
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Course Description
Through experimentation, laboratory, practice and homework:

Experimentation and basic concepts

error and uncertainty analysis

measurement and instrumentation

data analysis

interpretation of experimental results

reporting of experimental results

basic experiments in solid mechanics, thermodynamics, fluid mechanics and basic
engine testing
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Time and Place
Time:

Sec 1-6:
Lec: Mon 1-2 pm,
Lab: Mon 2-5 pm.

Sec 7-13:
Lec: Fri 1-2 pm,
Lab: Fri 2-5 pm.
Place:
Laboratory:
Laboratory locations
 First floor, ME2 building
 First, second, and third floor, ME1 building
Presentation:
Room will be announced.
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Experiments and Instructors
Lab No.
Lab
Sec 1-6
(Mon., 1-5 pm)
Instructor
Sec 7-13
(Fri., 1-5 pm.)
Instructor
KWC
1
Engine Testing
KWC
2
Material Properties
TSN
3
System Dynamics
CRW
4
Centrifugal Pump
APP
5
Pipe Flow
ABJ
6
Deflection of Beam
PTP
7
Heating Value Measurement
BLN
8
Cross Flow Heat Exchanger
9
Thermocouple and Viscosity
10
Wind Tunnel Testing
NAV
(or 10)
PPT
SCP
NAV
SLR
(ABJ, or 5)
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Evaluation and Grading
4-point scale: 4 = A, 3.5 = B+, … (you know the rest)
Weight

Participation
25
Laboratory participation (by instructor, 4-scale)
15
Presentation participation (by points  4-scale)
10
(simply participate by asking questions)

Report
(4-scale)
25

Presentation
(4-scale)
25

Oral Exam
(4-scale)
25

Scale:
Score will be based on 4-point scale.

Grade:
Your grade will be the weighted-average of all the 4-point-scale
scores.
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Class Conduct and Schedule
 Each section does 4 laboratories
 Each laboratory: 2 weeks of laboratory + 1 week of presentation
Week
1
2-4
Contents
Orientation
2-3
Laboratory 1
4
5-7
5-6
Presentation (+Individual report)
Laboratory 2
7
8-10
8-9
Presentation (+Group report)
Laboratory 3
10
11-13
11-12
Presentation (+Individual report)
Laboratory 4
13
14
Presentation (+Group report)
Oral Examination
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Schedule for Each Group & Rotation
Monday Sections (1-6)
Friday Sections (7-13)
Sec
Lab 1
Lab 2
Lab 3
Lab 4
Sec
Lab 1
Lab 2
Lab 3
Lab 4
1
1
9
7
6
7
1
9
8
7
2
2
1
9
7
8
3
1
9
8
3
3
2
1
9
9
5
3
1
9
4
6
3
2
1
10
4
5
3
1
5
7
6
3
2
11
7
4
5
3
6
9
7
6
3
12
8
7
4
5
13
9
8
7
4
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Textbooks and Class Web
Required Textbook:
Figliola, R. S., and Beasley, D. E., 2000, Theory and design for mechanical
measurements, 3rd Edition, Wiley, New York.
Class Web:
http://www.lecturer.eng.chula.ac.th/fmeabj/index.php3
For communication, announcement, etc., check it twice a week.
10
Curiosity
Observation
Experimentation
Question
Discovery
Explorer
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Why Experimentation
http://www.obsidiandawn.com/tutorials/skintones/skintones.htm
13
Why Experimentation
http://www.galileolibrary.com/artpaints/vangogh-sunflowers_on_green.jpg
14
Why Experimentation
http://www.its.caltech.edu/~atomic/snowcrystals/movies/movies.htm
15
Why Experimentation
http://www.bmumford.com/photo/naturetl/index.html
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[Why Experimentation]
http://www.wetasschronicles.com/UnderwaterNukeTest.wmv
See also http://www7.nationalgeographic.com/ngm/0508/feature6/multimedia.html
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Why Experimentation
(Different) Engine Test
Boeing Gallery: http://www.boeing.com
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Goals and Roles of Experiment
Goal:
Extract knowledge and useful information regarding the system
of interest with reasonable justification.

new knowledge,

used in product design and development,

qualify a product according to some standard,

falsify/verify a theory, call for a new theory,

hint toward the structure or mathematical form of a theory,

etc.
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Some Focuses of The Course
 Observation and Question
 Logic / Reasoning
 Three Main Components
 Problem Statement / Objective
 Approach
 Result / Conclusions
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Structure of An Experiment
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Knowledge and Structure of An Experiment
Observation / Ask The Right Question
Reasonably Justified Results/Conclusions
Supporting Evidences
Justification Method
Problem Statement/Objective
Premise: (Propositional) Knowledge is a statement (about something)
that we have a reasonable justification
to believe that it is reasonably true.
22
Reporting of Experimental Results
25
Report: Conclusions
What are conclusions?
Conclusions are convictions based on evidence.
From The American Institute of Physics: AIP Style Manual, Fourth Edition:
http://www.aip.org/pubservs/style/4thed/toc.html
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In conclusion: Why experiment?
To put simply,
We can learn more.
We can develop more.
We can discover more.
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