The problem of reflection and refraction phenomenon due to plane waves incident
obliquely at the loosely bonded interface between an elastic solid half-space and the microstretch
thermoelastic diffusion solid half-space is discussed. It is assumed that the interface behaves like
a dislocation, which preserves the continuity of traction while allowing a finite amount of slip.
The amplitude ratios of various reflected and transmitted waves to that of incident wave are
obtained. These amplitude ratios are further used to find the expressions of energy ratios of
various reflected and refracted waves to that of incident wave. Numerical results have been
obtained for a particular model to study the variation of energy ratios with respect to angle of
incidence. The effect of relaxation times and loosely bonding parameters are shown with energy
ratios for a specific model. The law of conservation of energy at the loosely boundary interface is
verified. Some special cases of interest have been deduced from the present investigation.
Keywords: microstretch; thermoelastic diffusion solid; bonding parameter; plane waves; energy ratios
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