On discovery of extra four new dispersive SH-waves in magnetoelectroelastic plates

TL;DR

This theoretical paper discovers four new dispersive shear-horizontal waves in magnetoelectroelastic plates, expanding understanding of wave propagation in piezoelectromagnetic materials for advanced device applications.

Contribution

It introduces four novel dispersive shear-horizontal waves in PEM plates and analyzes their dispersion relations under specific boundary conditions.

Findings

Four new dispersive SH-waves identified in PEM plates

Dispersion relations analyzed and graphically compared with previous results

Potential applications in nondestructive testing and device miniaturization

Abstract

The study of this theoretical work definitely adds extra four new dispersive shear-horizontal waves propagating in the transversely isotropic piezoelectromagnetic (PEM) plates of class 6 mm. In this study, the following mechanical, electrical, and magnetic boundary conditions at both the upper and lower free surfaces of the PEM plate are exploited: the mechanically free surface, continuity of both the electrical and magnetic inductions, and continuity of both the electrical and magnetic potentials. The obtained dispersion relations were also graphically studied and compared with previous results. Some interesting peculiarities were also discussed. It is well-known that the plate waves are frequently used for nondestructive testing and evaluation of thin films, further miniaturization of different technical devices based on PEM smart materials, and constitution of new technical devices such as filters, sensors, delay lines, switches, lab-on-a-chip, etc.