Love waves in a layer with void pores over a microstructural couple stress substrate with corrugated boundary surfaces

Abstract

This paper presents theoretical investigations of Love waves in a layered structure composed of a layer of finite thickness exhibiting heterogeneities in the form of void pores lying over a couple stress substrate which possesses inner microstructures. The top surface of layer and the interfacial surface between two media are assumed to be sinusoidal corrugated in nature. Dispersion relationships for the propagation of Love waves in the considered model are calculated, and some special cases are also discussed considering different types of conditions at the boundary surfaces. Profiles of wave propagating through a material are affected by microscopic heterogeneities and inner microstructures of the material. So, the impact of various parameters engaged in the problem such as void parameters, corrugation parameter and microstructural parameter of half space called characteristic length parameter is provided on both phase and damping velocities of Love waves. A comparative assessment is provided by depicting all the outcomes for various sub-cases.

Microstructured induced band pattern in Love wave propagation for novel nondestructive testing (NDT) procedures

“…As a consequence of these observations, the dispersion relation (44) cannot be directly obtained assuming a classical solution for B and it is thereby defined as non-classical. We also observe that, to leading order, q 1A (0) = 0, which indeed corresponds to one of the boundary conditions used in Sharma and Kumar (2019); Sharma et al (2020). However, rotation at the…”

Case-wise analysis of Love-type wave propagation in an irregular fissured porous stratum coated by a sandy layer

“…Gupta et al (2020a, b, c) studied the influence of point source on shear wave propagation in fissured poroelastic medium. Impact of couple stress on the dispersion of Love wave propagating in a corrugated layer with void pores has been examined by Sharma et al (2020). Ray and Singh (2020) explored the propagation of Lovetype waves in a couple-stress stratum.…”