Effect of nonlocality and surface – interface elasticity on lamb wave propagation in piezoelectric – piezomagnetic nanoplate
Arpita Maji, Ayush Kumar, Sudarshan Dhua
Abstract
This study highlights the essential role of surface-interface characteristics and nonlocal elasticity in nondestructive detection for piezoelectric-piezomagnetic nanostructures. It investigates Lamb wave propagation in layered structures under nonlocal elasticity, using magnetoelectroelastic (MEE) theory with intrinsic length scales. The Gurtin–Murdoch model and generalized Young–Laplace equations incorporate surface effects in bilayer boundaries, yielding an analytical dispersion equation for EOMS conditions. Numerical results reveal the influence of surface/interface elasticity, nonlocal, and thickness parameters on dispersion. By incorporating surface and nonlocal effects, this study enhances the sensitivity and dispersion characteristics of waves, providing a deeper understanding of wave propagation in layered systems.