Wave propagation in a generalized thermoelastic material with voids

The governing equations for two-dimensional homogeneous, isotropic generalized thermoelastic half-space with voids are solved in context of Lord-Shulman theory. Three compressional waves and a shear vertical (SV) wave are shown to exist. The reflection phenomena of compressional or shear wave from the free surface of a thermoelastic solid with voids is considered. The boundary conditions at stress-free thermally insulated surface are satisfied to obtain a system of four equations in the reflection coefficients of various reflected waves. These reflection coefficients depend on the angle of incidence of striking wave, void, thermo-void and other elastic parameters. Numerical values of the complex modulus of the reflection coefficients are also visualized graphically to observe the effects of void parameters. (c) 2006 Elsevier Inc. All rights reserved.