Metal Matrix Composites: Design and Methodology

Metal matrix composites (MMCs) are materials that exhibit unusual property combinations and unique design possibilities. This article provides an overview of techniques for analysis in the design of MMC materials. Starting with the micromechanics of the reinforcement and matrix, methods that account for damage initiation and evolution are considered. The inhomogeneous composite is represented by a homogeneous material, which is often anisotropic, with the effective properties of the composite. Properties of interest for evaluating stress and strain are as follows: elastic engineering properties, coefficient of thermal expansion and thermal conductivity, yield strength, and hardening parameters. Thermomechanical loading is considered to be an integral aspect of stress analysis with MMCs. Approach to achieve higher levels of performance in critical industrial applications with copper matrix composites, high conductivity composites, nanoscale composites, are also discussed.