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Damage Dependent Micromechanics in Metal Matrix Composites

by R. H. Jones, Texas A&M Univ, College Station, United States,
D. H. Allen, Texas A&M Univ, College Station, United States,
J. G. Boyd, Texas A&M Univ, College Station, United States,



Document Type: Proceeding Paper

Part of: Engineering Mechanics

Abstract:

A computational approach is used herein to model the effects of processing induced thermal residual stresses on radial, hoop, and shear stresses at the fiber/matrix interface in a continuous fiber metal matrix composite. For the case considered herein, the coefficient of thermal expansion in the matrix is approximately a factor of 4 greater than that in the fiber. It is found that the predicted residual stresses caused by cooldown tend to enhance the development of radial cracks, whereas interfacial cracks tend to be diminished.

Subject Headings: Shear stress | Residual stress | Composite materials | Thermal loads | Metals (material) | Matrix (mathematics) | Cracking

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