ME240:
INTRODUCTION TO ENGINEERING MATERIALS
Instructor: Dr. K. Morsi
Dept. of Mechanical Engineering
Office: E305 Engineering Building
E-mail: kmorsi@mail.sdsu.edu
Office Hours: 1-3pm MW.
Meeting times and place: 10:00-10:50 a.m. MWF PS130
Website
http://attila.sdsu.edu/~morsi
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.1
Prerequisite:
Chemistry 202 and credit or concurrent registration in Engineering Mechanics 200 or 202
Text
Materials Science and Engineering, An Introduction
William D. Callister, David, RethwischJr., 9th Ed.,
John Wiley and Sons, 2014.
Website
Course information and homework solutions will be posted at:
Website: http://eon.sdsu.edu/~morsi
Enter website then go to teaching then ME260
POWERPOINT PRESENTATIONS & Homework solutions
Password  me260
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.2
Determination of Course Grade
Your homework, three 50 min tests and a writing assignment will determine your grade.
MID TERMS (3)
= 100%
Best 2 count for 40% each, worst midterm
counts for 20%
TOTAL
100%
Homework = extra 3 %
NO FINAL
OFFICE HOURS: 1-3 pm MW
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.3
Homework
Homework assignments are listed on the webpage. These assignments are due at the beginning of
the class. Homework is to be turned in on 8 1/2 x 11 paper with: your name, student number,
the date, and assignment number written on the outside of the paper.
EXAMPLE:
Joe Smith
1/21/04
Homework #1
VERY IMPORTANT
In your solutions, the final Answers to homework questions must be boxed in red to
receive credit.
e.g. Energy = 10 MJ.
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.4
The homework is given first and foremost for the benefit of the student for practice and
will contribute to the student’s grade for bonus points. Bonus points will be added to
the final course average according to the following scale: 65% qualifying homework
assignments: 1 point; 75% qualifying homework assignments: 2 points, 85% qualifying
homework assignments: 3 points.
For a homework assignment to qualify, at least 70% of the points must be earned.
The homework will be graded on effort. Although you are encouraged to work together
on the homework, the assignment handed in must reflect your personal effort only. i.e. it
must be your own solution. Solutions to the all the questions on the assignments will
be available on the website on the day the homework is returned.
Students who submit assignments that show strong dependence on solutions or any
sort of cheating (for example: a correct answer presented for an incorrectly worked
problem ..etc) will be given a score of zero for the entire homework for the whole
semester. Students who copy solutions from others are guilty of academic dishonesty
and may be subject to disciplinary action. Illegible and/or sloppy homework, or work
turned in on pages ripped from spiral notebooks will be returned ungraded.
No late homework will be accepted except under documented extenuating
circumstances. Homework is due at the beginning of class on the specified day.
If you must be absent for a class, you may turn in your homework early, or have a
fellow student turn it in on the due date and notify the instructor prior to your absence.
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.5
ATTENDANCE POLICY
Regular attendance in this class is required. The instructor reserves the
right to lower a student's grade due to poor attendance. Attendance
sheets will be passed out on random dates throughout the semester. If a
student misses a class without proper justification and without previously
notifying the instructor he/she will be counted as being absent once. The
first time this happens, the student will not be penalized, and it will not
count against him/her, however for every time this happens afterwards,
the student’s final average score for the class will be reduced by 2%. For
example if a student is unjustifiably absent three lectures in the semester,
it will count as 2 absences and his/her final score will be reduced by 4%.
The instructor understands that sometimes students will need to be
absent from class for legitimate reasons beyond their control, hence the
student will not be penalized in such a case. However, notifying the
instructor prior to such a case is required.
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.6
MAKEUP TESTS/EXAMS
No makeup tests will be given except in very severe and well documented
circumstances.
EXTRA TUTORIAL SESSIONS
From time to time the instructor may wish to schedule extra sessions
introduced for the purpose of giving students a better grasp of problem
solving. The attendance will not be compulsory.
ACADEMIC DISHONESTY
Cheating of any form including plagiarism (defined by the University in
the General Catalogue, page 440) constitutes a serious offence. Cheating
will not be tolerated, and evidence of cheating by a student will result in
an automatic “F” as the student's grade and reported to the Judicial
Procedures Office.
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.7
SPECIAL NEEDS:
If you have special needs as addressed by the Americans with
Disabilities Act (ADA) and need assistance, please notify the course
instructor immediately. Reasonable efforts will be made to
accommodate your special needs.
PowerPoint Presentations
Homework Assignments & Solutions
Access to solved problems
Grading and Attendance policies
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.8
Course Outline
Fundamentals
Introduction
Atomic Structure/Bonding
Crystal Structure
Imperfections
Diffusion
Mechanical Behavior
Mechanical Properties
Dislocations/Strengthening
Failure
Control and Processing
Phase Diagrams
Phase Transformations
Thermal Processing
Classes of Materials
Alloys
Ceramics
Polymers
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.9
MATERIALS
METALS
CERAMICS
POLYMERS
COMPOSITES
ADVANCED MATERIALS
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.10
METALS
Combinations of metallic elements
Non bound electrons – thermal/electrical conductivity.
Steel gear produced using Powder Metallurgy
Close dimensional tolerance and high strength and wear resistance
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.11
POLYMERS
Organic compounds –
mainly based on Hydrogen, Carbon, and non-metallic element
Fighter plane fully covered with a paint replacement adhesive
$3 BILLION SAVED OVER LIFE TIME COSTS
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.12
CERAMICS
Compounds between metals and non-metals
Properties
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.13
COMPOSITES
* Metal matrix composites (MMC’s)
* Ceramic matrix composites (CMC’s)
SiC
Alumina
10 m
Fibers
* Polymer composites - fiberglass
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.14
SEMICONDUCTORS
BIOMATERIALS
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.15
ADVANCED MATERIALS
High performance applications
Nickel based super alloys Turbine blade mechanically fixed to the
rotor of a high performance gas turbine engine
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.16
ULTRALIGHT MATERIALS – METALLIC FOAMS
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.17
Nanomaterials
JOM, Jan 2004
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.18
BRITTLE FRACTURE
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Figure 1.1. The four components of the discipline of Materials
Science and Engineering and their linear interrelationship
Processing  Structure Properties Performance
Subatomic
Mechanical
atomic
microscopic
macroscopic
Electrical
Magnetic
Thermal
optical
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.20
Processing
Mechanical
properties
Microstructure
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
Properties
1.21
SINGLE
CRYSTAL
POLYCRYSTAL
POLYCRYSTAL
+ PORES
Figure 1.2 – Alumina (Al2O3) – single crystal and polycrystal
ME 260: INTRODUCTION TO ENGINEERING MATERIALS
1.22
END OF CHAPTER 1
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