B. Course Syllabi for Materials Engineering

1. Course Name: Mat E 318 Mechanical Behavior of Materials

2. Catalog Description: Mat E 318. Mechanical Behavior of Materials. (2-3) Cr. 3. S. Mechanical behavior of ceramics, metals, polymers, and composites. Relationships between materials processing and atomic aspects of elasticity, plasticity, fracture, and fatigue. Life prediction, stress- and failure analysis. Nonmajor Graduate Credit.

3. Prerequisites: Mat E 211, EM 324.

4. Textbook/Materials: The required text is G. E. Dieter, Mechanical Metallurgy (McGraw - Hill 1986). Several other references will be used which will be cited in handouts.

5. Course Learning Objectives:

• Specify materials processing approaches that can strengthen or optimize the deformation behavior of a given machine part.
• Specify and perform appropriate tests of the mechanical properties of a given material.
• Use the results of these tests to better design a machine part and predict its lifetime. How do I design a machine part with the right material and the right geometry so that it will not be overloaded in service?
• Recognize and analyze the failure mode of a fractured part. Why did a machine part fail? Was it overloaded in service? Or, was it poorly designed from the standpoint of its geometry or materials selection?

6. Topics Covered: Definitions of Elastic and Plastic Behavior, Ductility, Brittleness, True Stress and Strain, Engineering Stress and Strain, Mohr Circle for Stress in 3 Dimensions; Resolving Principal Stresses and Principal Directions; Elasticity in Metals, Ceramics, and Polymers; Slip Systems in Single Crystals, Plastic Flow in Polycrystalline Metals; Critical Resolved Shear Stress; Tresca and Von Mises Criteria for the Yielding of Ductile Materials; Dislocations and the Peierls-Nabarro Force; Relating Stress-Strain Behavior of a Single Crystal to Dislocation Motion; Strengthening Approaches and Materials Design; Dislocation Intersections and Multiplications, Strain Hardening; The Flow Curve and Necking, Dislocations in Ceramics; Maxwell and Voight Solids, Viscous Flow of Noncrystalline Solids; Atomic and Molecular Micromechanisms of Internal Friction; Mechanical Behavior of Polymers, Dynamic Mechanical Analysis; Polymer Chemistry, Structure, and Strengthening; Deformation of Ceramers and Oxide Glasses; Stress Analysis and Design with Polymers; Stress Analysis of Cracks and Stress Concentration Factor; Theoretical Cohesive Strength, Griffith’s Theory of Brittle Fracture; Cleavage in Crystals; Weakest Link Statistics to Fracture, Weibull Statistics; Basic Aspects of Brittle and Ductile Fracture, Notch Effects on Triaxial Stresses and Fracture, Designing with Fracture Toughness, Measuring Fracture Toughness; Ductile versus Brittle Fracture, Practical Examples; Micromechanisms of Fatigue Crack Propagation; Effects of Processing Variables on Fatigue; Design Strategies, Introduction to Life Prediction; Failure of Bolts in Fatigue: A Great Example

7. Class/Laboratory Schedule: MF 8, Lab W 8-11

8. Professional Component: Mat E 318 contributes 3 credits towards Engineering Topics contributes to the professional component of this program through the discussion of case studies which incorporate engineering design.

9. Relationship of Course to Program Learning Outcomes and Program Educational Objectives: Objectives: A, E Outcomes: a-e, g, i, k-o, r (significant), h, j (moderate)

10. Prepared by: Christopher Schilling, 1/20/00, rev. 5/24/00 KPC