Mechanical and Aerospace Engineering 160 Mechanical Behavior of Materials

Department of Mechanical and Aerospace Engineering Jacobs School of Engineering University of California, San Diego Winter 2018 Syllabus

COURSE DESCRIPTION Elasticity and anelasticity, dislocations and plasticity of crystals, creep, and strengthening mechanisms. Mechanical behavior of ceramics, composites, and polymers. Fracture: mechanical and microstructural. Fatigue. Laboratory demonstrations of selected topics. Prerequisites: Grade of C- or better in MAE 20, MAE 130A (or SE 101A) and MAE 131A, or consent of instructor. GENERAL COURSE INFORMATION Instructor: Dr. Olivia A. Graeve Phone: (858) 246-0146 Email: ograeve@ucsd.edu Course Web Site: http://graeve.ucsd.edu/MAE160/ Office Hours: Wednesdays, 10:00 – 11:00 AM or by appointment Office: Jacobs Hall 3115 Course meetings: Tuesday and Thursday, 7:30 – 9:20 AM Classroom: CSB 002 Teaching Assistant: Kyungah Seo Email: k1seo@ucsd.edu Tutoring Hours: Mondays, 4:00 – 6:00 PM Tuesdays, 3:00 – 5:00 PM Location: EBUII 584 REQUIRED TEXT R.W. Hertzberg, R.P. Vinci, and J.L. Hertzberg, Deformation and Fracture Mechanics of Engineering Materials 5/e, (John WIley & Sons, Inc., New York, 2012). OPTIONAL TEXTS Ø J.F. Shackelford, Introduction to Materials Science for Engineers 8/e, (Prentice Hall, New York, 2014). Ø T.H. Courtney, Mechanical Behavior of Materials 2/e, (Waveland Press, Inc., New York, 2005). Ø W.D. Callister and D.G. Rethwisch, Materials Science and Engineering An Introduction 8/e, (John Wiley and

Sons, New York, 2009).

Page 2

TOPICS Ø Crystal structure Ø Elasticity and viscoelasticity Ø Plasticity Ø Imperfections in solids Ø Fracture Ø Strengthening mechanisms Ø Creep and superplasticity Ø Fatigue Ø Structure/property relationships COURSE OBJECTIVES All students who participate in MAE 160 should come away with: Ø An understanding of the elementary relationships between structure and mechanical properties of materials

that are essential for understanding the role of these materials in the design of engineering systems. Ø An understanding of the fundamental structural nature of materials, including microstructure and defects, and

its effect on the mechanical properties. Ø An understanding of the differences in the mechanical behavior of materials at low and high temperatures. Ø An understanding of the engineering processing techniques used for strengthening and toughening materials. Ø An interest and appreciation of materials by critical examination of engineering case studies. LEARNING OUTCOMES Students who follow course requirements and practices can expect, at the end of the semester, to be able to: Ø Apply the basic principles of elasticity and plasticity and describe the importance of elastic and plastic

behavior of metals to industrial applications. Ø Describe test methods to characterize the mechanical behavior of metals including tension, compression,

hardness, impact, flexure, fatigue, and creep tests and interpret the collected data. Ø Describe the concept of fracture mechanics and its applications to product design, manufacturing and service

reliability. Ø Describe and predict the mechanical behavior of materials using the concepts of dislocation theory. Ø Improve fracture toughness in a material and deflect a crack's propagation through the understanding of the

microstructure. EXAMINATIONS There will be two mid-semester examinations, and one final examination. The dates of each examination are indicated in the Lecture Schedule. Absence during examinations, without prior approval, will result in a zero. Prior approval will be given only under exceptional circumstances. ASSIGNMENTS Homework will be assigned in class and must be submitted on the date specified by the instructor. Clarification on the due date for each assignment will be given in class. No late homework will be accepted. GRADING Students will be graded using the following breakdown:

Midterm examination 30% Final examination 40% Homework 30%

TOTAL 100%

Page 3

MAE 160 STUDENT HONOR CODE I have read the honor code below and agree with its provisions. My continued enrollment in this course constitutes full acceptance of this code: I will not: Ø give information or receive information from another person during an exam, Ø use more reference material during an exam than is allowed by the instructor, Ø plagiarize information from books, journals, or the Internet, Ø alter an exam after it has been graded and return it to the instructor for regrading, and Ø copy another persons homework solutions and submit them as my own. HOMEWORK AND EXAMINATION SOLUTIONS Solutions to all homework and examination solutions will be posted electronically on the following web site: http://graeve.ucsd.edu/MAE160/HomeworkSolutions.html E-MAIL ETIQUETTE Email is a very public means of information exchange, which should be treated with respect. As such, I expect that all students will write and respond to emails in a respectful manner. An example of an appropriate email is:

January 9, 2018 Dear Dr. Graeve:

Could you please inform me of the reading assignment for this week?

Thank you,

John Doe

An example of an inappropriate email is:

Hey you what is the homewrk this week This last email has misspellings, inappropriate punctuation, no salutation, no signature, no date, and is extremely disrespectful. Note: Do not write emails that you would not want your mother or your lawyer to read. Assume, at all times, that everyone in the world will read any email you write. DISABILITIES ACCOMMODATION All students with disabilities who wish to request accommodations should contact the Office for Students with Disabilities. All information disclosed to this office by students will remain confidential, but the office will provide documentation that supports accommodations within the classroom (e.g., examination accommodations, notes, etc.). Please keep in mind that many accommodations require early planning, so requests should be made as soon as possible.

Page 4

IDEA STUDENT CENTER The IDEA Student Center, located just to the right of the lobby of Jacobs Hall, is a hub for student engagement, academic enrichment, personal/professional development, leadership, community involvement, and a respectful learning environment for all. The Center offers a variety of programs, listed in the IDEA Center Facebook page at http://www.facebook.com/ucsdidea/ (you are welcome to Like this page!) and the Center web site at http://idea.ucsd.edu/. LECTURE SCHEDULE

Date Topic Assigned Reading

Tue, January 9 Elastic Response of Solids pp. 3-27

Thur, January 11 Multiaxial Linear Elastic Response and Anisotropy pp. 27-40

Tue, January 16 Dislocations in Metals and Ceramics pp. 63-87, 90-102

Thur, January 18 Plasticity in Polymers pp. 120-136

Tue, January 23 Strengthening of Metals pp. 143-175

Thur, January 25 Metal-Matrix Composite Strengthening pp. 40-50, 175-183

Tue, January 30 Creep in Metals pp. 189-227

Thur, February 1 Creep in Polymers pp. 227-243

Tue, February 6 Fracture pp. 251-260

Thur, February 8 Stress Concentration Factors pp. 260-294

Tue, February 13 Griffith Crack Theory pp. 299-328

Thur, February 15 Midterm Examination

Tue, February 20 Design for Fracture pp. 328-358

Sat, February 24 Fracture Toughness in Solids, 10:00 – 11:50 AM pp. 383-416

Tue, February 27 Toughness of Ceramics and Polymers pp. 416-453

Thur, March 1 Environment-Assisted Cracking pp. 463-493

Tue, March 6 Fatigue Failure pp. 499-529

Thur, March 8 Strain-Controlled Fatigue pp. 529-553

Tue, March 13 Fatigue Crack Propagation pp. 559-600

Thur, March 15 Environmentally-Enhanced Fatigue pp. 600-635

Thur, March 22 Final Examination, 8:00 – 11:00 AM