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WAVE PROPAGATION BETWEEN A THERMOELASTIC HALF-SPACE AND A THERMOELASTIC HALF-SPACE WITH VACUOUS PORES

ABSTRACT

In this paper, we have analyzed the reflection and refraction phenomena due to an incident coupled dilatational wave striking obliquely at the plane interface between a thermo-viscoelastic half space and a thermo-viscoelastic half-space with voids. Amplitude ratios of different reflected and refracted (or transmitted) waves have been provided in closed form for incidence of a set of coupled dilatational waves and basic governing equations are formulated in the framework of the three-phase-lag thermoelasticity theory. For a magnesium crystal material, expressions for reflection/refraction coefficients are computed. Through a variety of graphs, variations in the modulus values of the reflection/refraction coefficients have been shown as functions of the angle of incidence of the striking wave. These graphical representations highlight the effects of phase lag parameters and voids on the amplitude ratios of different reflected/refracted waves.

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