SH Waves Propagation in a Layered Coupled Plate under Non-Local Theory

The non-local theory of elasticity provides a comprehensive framework for studying the propagation of surface waves in materials with micro and nanostructures. This study, explores the propagation of shear waves in a coupled plate comprising a piezoelectric layer and an elastic layer under the non-local theory of elasticity. These composite structures leverage the complementary properties of piezoelectric and elastic materials, with applications ranging from energy harvesting to medical imaging and acoustic devices. The piezoelectric layer is assumed to be perfectly bonded to the elastic layer. Analytical derivation yields the dispersion equation for shear waves in closed form, with specific cases derived from this equation demonstrating agreement with previously published results. Numerical simulations are conducted to visualize the impacts of key parameters investigated in the study. Notably, the insights gained from this investigation are crucial for optimizing the efficiency and reliability of various types of sensors and acoustic devices.