Characterization of anisotropic elastic constants of silicon-carbide particulate reinforced aluminum metal matrix composites; Part 2: Theory

Journal Article · Thu Mar 31 23:00:00 EST 1994 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)

OSTI ID:7276536

Jeong, H ^[1]; Hsu, D K ^[2]; Shannon, R E ^[3]; Liaw, P K ^[4]

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1. Agency for Defense Development, DaeJon (Korea, Republic of)
2. Iowa State Univ., Ames, IA (United States). Center for Nondestructive Evaluation
3. Westinghouse Science Technology Center, Pittsburgh, PA (United States). Materials Reliability Dept.
4. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Materials Science and Engineering

The effective elastic constants of composite materials contain arbitrarily oriented ellipsoidal fibers were derived using the concept of orientation-dependent average fields and the strain concentration factor tensors. Under the prescribed boundary condition, the concentration factor was evaluated by the Mori-Tanaka method and the Eshelby's equivalent inclusion principle. The fourth-rank tensor expression for the elastic stiffnesses was recast into matrix form for easier numerical computations. The theoretical model developed was applied to the computation of the anisotropic elastic constants of the extruded Al/SiC[sub p] composites considered in Part 1 of this series. Good agreement was found between the model predictions and the ultrasonic measurement results. Comparisons with the Hashin-Shtrikman (H-S) bounds for isotropic composites were also presented. It was found that while the H-S lower bound predicted the out-of-plane properties, it generally gave a poor estimate for the in-plane properties of these composites.

• OSTI ID: 7276536
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States) Vol. 25:4; ISSN 0360-2133; ISSN MTTABN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ALLOYS
ALUMINIUM ALLOYS
CARBIDES
CARBON COMPOUNDS
COMPARATIVE EVALUATIONS
COMPOSITE MATERIALS
DATA
ELASTICITY
EVALUATION
INFORMATION
MATERIALS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
NUMERICAL DATA
SILICON CARBIDES
SILICON COMPOUNDS
TENSILE PROPERTIES
THEORETICAL DATA