Propagation Behaviors of SH Waves in Piezoelectric Layer/Elastic Cylinder with an Imperfect Interface

Abstract

The dispersion behaviors of SH waves are investigated propagating in a layered structure consisting of a piezoelectric layer and an elastic cylinder. The interface between the piezoelectric layer and the elastic cylinder is assumed to be imperfect bonding. The surface of the piezoelectric layer is assumed to be mechanically free and electrically shorted. The dispersion equation is derived by the basic equations, the boundary and the interface conditions. The numerical examples are provided to show the influences of the imperfect interface, the thickness ratios and the material properties of the piezoelectric on the dispersive characteristics.

Microstructural considerations on SH-wave propagation in a piezoelectric layered structure

“…Liu and He (2010) also illustrated the properties of Love waves for a layered structure with an SiO 2 layer sputtered on an ST-90 • X quartz substrate and found the existence of a threshold of normalized layer thickness. Wang et al (2012) examined the dispersion behavior of SH waves propagating in a layered structure consisting of a piezoelectric layer and an elastic cylinder with an imperfect bonding. Wang and Zhao (2013) studied propagation of the Love wave in two-layered piezoelectric/elastic composite plates with an imperfect interface based on the shear spring model.…”