Effects of electric field gradient on the propagation of short piezoelectric interface waves

Article type: Research Article

Authors: Yang, Zengtao^a | Yang, Jiashi^{a; b; *}

Affiliations: [a] Institute of Mechanics and Sensing Technology, School of Civil Engineering and Architecture, Central South University, Changsha, Hunan 410083, China | [b] Department of Engineering Mechanics, University of Nebraska, Lincoln, NE 68588-0526, USA

Correspondence: [*] Corresponding author. Tel.: +1 402 472 0712; E-mail: jyang1@unl.edu

Abstract: We study anti-plane or shear horizontal piezoelectric waves propagating along the interface between two semi-infinite half-spaces of polarized ceramics with consideration of the effects of electric field gradient. An equation that determines the dispersion relations is obtained. Numerical solutions to the equation show that, different from the prediction from the linear theory of piezoelectricity, short interface waves become dispersive when electric field gradient is considered.

Keywords: Piezoelectricity, wave, dispersion

DOI: 10.3233/JAE-2009-1006

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 29, no. 2, pp. 101-108, 2009