Love-type waves generated by an impulsive source in a conductive polymer-coated piezoelectric composite structure

The present contribution investigates the scattering of Love-type waves through piezoelectric composite structure as a result of an impulse point source disturbance. The complex stratified structure consists of a piezoelectric medium resting on a functionally graded (FG) elastic substrate and coated with a thin conductive polymer film. The dispersion equation of the wave propagation is determined analytically using the Fourier transformation as well as Green's function method. The acquired dispersion equation is reduced for particular cases and found to be similar to pre-established results. Based on numerical simulations and graphs, it is noted that viscoelasticity, conductivity, piezoelectric, dielectric, and functionally gradient parameters have a significant impact on the wave's phase velocity and attenuation. The outcomes of this work can be valuable for engineering surface acoustic wave (SAW) devices.