Reflection/refraction pattern of quasi-(P/SV) waves in dissimilar monoclinic media separated with finite isotropic layer

Abstract

This paper concentrates on the study of reflection and refraction of incident quasi (P/SV) waves in dissimilar monoclinic media separated by an isotropic layer of finite thickness. It is shown that incident quasi waves at lower interface generates two reflected quasi waves and two transmitted purely longitudinal and transversal waves; these transmitted waves further give rise to reflected and transmitted waves at the upper interface. A closed form solution for velocity profile and reflection/transmission coefficients for all reflected/refracted waves are obtained along with numerical simulation showing the effect of incident angle, layer width, elastic coefficients and the nature of the incident quasi (P/SV) wave. Findings of the present problem show that reflection and refraction of quasi waves at layered interface sandwiched between different monoclinic media may be useful in signal processing, sound system and wireless communication, piezoelectric sensors, and motion detectors, in addition to improving surface acoustic wave devices and defense equipment.