The analysis of horizontally polarized shear wave (SH-wave) into a piezoelectric layer overlying a functionally graded transversely isotropic (FGTI) half-space under the influence of an impulsive point source existing at its interface is the hallmark of this investigation.
FG in the half-space is caused by quadratic variations in the elastic constants and density. The framework of this study also encompasses the use of Green’s functions technique and Fourier transforms, non-dimensionalization of the resulting equations of motion and grooved boundary conditions occasioned by the modelled problem. The closed-form dispersion equation of SH-wave has been established with the aid of admissible boundary conditions and the properties of Green’s function.
To depict the results numerically, four distinct piezoelectric materials have been considered viz. PZT-5H ceramics, BaTiO3 ceramics, SiO2 glass and borosilicate glass. The study manifests the remarkable impact of parameters, viz. piezoelectric constant, dielectric constant and FG parameters through the aid of numerical examples and graphical demonstrations. It is crucial to state that among the four different types of piezoelectric materials, PZT-5H ceramics have the most prominent effect for all the parameters while borosilicate glass has the least.
The originality of this research lies in its novel combination of Green’s function methodology with the study of SH-wave regulation in a specific layered material system, offering insights into both fundamental wave mechanics and potential practical applications. In addition, this study also has potential implications in the fabrication and optimization of surface acoustic wave (SAW) devices, Love wave sensors and transducers.
