Interface Effects on Attenuation and Phase Velocities in Metal-Matrix Composites

Abstract

Analyzes the problem of damping in metal-matrix composites when there is an interface layer through which the inclusion property changes continuously to that of the matrix. Results are presented of some recent investigations of phase velocity and attenuation of plane longitudinal and shear waves in a medium with inclusions with interfacial layers. A wave-scattering approach together with Lax's quasicrystalline approximation is used to predict the phase velocity of either a longitudinal or a shear wave propagating through the medium. The scattering approach leads also to an estimation of attenuation.