MATSE 406: Thermal and Mechanical Behavior of Materials

Homepage: http://web.mse.uiuc.edu/matse406

Current Assigned Text:
"Mechanical Behavior of Materials", M. A. Meyers and K. K. Chawla (Prentice-Hall, 19999)

Reference Texts: (Available Reference Desk in Grainger)
1. Mech. Behavior of Materials, M.A. Meyers and K.K. Chawla (Prentice-Hall, 1999)
2. Mechanical Behavior of Materials, Thomas Courtney (2nd Edisiton, McGraw-Hill, 2000)
3. Mechanical Metallurgy, George Dieter (McGraw-Hill);
4. Materials Science and Engineering, William Callister, Jr. (Wiley);
5. Engineering Materials 1, Michael Ashby and David Jones (Pergamon).
6. Deformation and Fracture Mechanics of Engineering Materials, Richard W. Hertzberg, 4th Edition (Wiley & Sons, NY, 1996)

Catalog Description, Prerequisites and Schedule:

Studies fundamentals of elastic, viscoelastic and plastic deformation of materials, elementary theory of statics and dynamics of dislocations; examines strengthening mechanisms and behavior of composites; fracture and fatigue behavior; fundamentals of thermal behavior: heat capacity, thermal expansion and conductivity; effects of thermal stress. Credit is not given for both MSE 406 and either ME 330 or TAM 324. MatSE students will not receive credit for this course toward a graduate degree. Prerequisite: TAM 206 and MSE 301, Math 225 (Linear Algebra). 3 hours

Course Topics:

1. Material Response to Stress.
2. Linear Elastic Behavior
3. Thermal Behavior
4. Elements of Plasticity
5. Viscoelasticity Behavior
6. Dislocation Theory
7. Strengthening Mechanisms
8. Composite Behavior
9. Fracture
10. Fatigue Behavior

Course Objectives:

To give the students a fundamental understanding of the thermal behavior (e.g., thermal stresses) and mechanical behavior (e.g., stress-strain, fatigue and fracture: or materials, and to permit processing-structure-property correlations to be drawn in subsequent senior year and/or graduate courses. While atomistics of thermal behavior are discussed elsewhere, this course is concerned with the effects on properties and giving a general knowledge of the mechanical properties of materials.

1. To know the generic behavior of stress-strain and thermal responses in metals, ceramics, and polymer (M-C-P), as well as the various similarities and differences of response in M-C-P.
2. To know the atomic-scale origin for specific aspects of stress-strain and thermal responses in M-C-P (e.g., Poisson effect, thermal expansion, independence of elastic moduli on defects).
3. To connect materials response under specific conditions to actual experimental set-ups.
4. To know differences and similarities of tensile and compressive stresses (or strains) in M-C-P and utilize concepts in plastic or brittle materials for expected stress-strain response.
5. To utilize knowledge of stress-strain response in M-C-P in application to simple types of processing and pre-stress/strain conditions (e.g., drawing and rolling, geometric and thermal constraints).
6. To know and incorporate the effect and size of thermal stresses in responses of M-C-P.
7. To introduce general states of stress and transformations of stress (including stress and strain invariants) for yielding and failure (e.g., Rankine, Tresca's and von Mises' criterion), necking, and response behavior of crystalline materials, as well as important differences in polymers.
8. To relate point, line, and planar defects to materials response in M-C-P, and to utilize this knowledge to understand and control properties. To know how such defects can be created.
9. To introduce and understand simple polymer, metal-matrix and ceramic-matrix composites and their response to stress and strains.
10. To introduce and apply fracture and fatigue behavior in M-C-P materials, with brief introduction into its use for materials design.

Course Outcomes:

1. Given type of material (metal, ceramic, or polymer), identify elastic, plastic, and fracture regions, calculate loads required for each, use proper relations to quantify response, determine various elastic, yielding, failure behavior, especially applied to specific scenarios of processing or pre-stress/strain conditions.
2. Calculate thermal residual stresses and additional loads required for, say, yielding.
3. Identify principal stresses, strains, and planes, and calculate the stress invariants and principal quantities, planar and normal stress components in general stress states. Utilize symmetric stresses and strains, and engineering strains in mechanical response, yielding and failure.
4. Identify types of defects. Know generic behavior of stress fields around and interaction of defects, such solute-dislocation and dislocation-dislocation, and their effects on mechanical response in materials.
5. Know general iso-strain or iso-load behavior of composites and calculate responses in simple composite materials, including unaligned cases and generic effects.
6. Apply simple concepts of fracture, stress concentrators, and fatigue. Identify and use these concepts in simple materials design and failure.

Assessment Tools:

1. Homework problems involving fundamental knowledge and application of each topic.
2. Three written examinations (two hourly and one comprehensive final) roughly divided into (1) Materials response to stress, Elasticity, Anisotropy, and Plasticity; (2) Dislocation Theory, Strengthening Mechanisms, and (3) Composite Behavior, Fracture and Fatigue. Exams are designed to test the student's understanding of concepts and their ability to apply his/her knowledge.

Contribution of Course to Meeting the Professional Component:

100%

Prepared by:

Duane D. Johnson, April, 2006