Effects of the imperfect interface and piezoelectric/piezomagnetic stiffening on the SH wave in a multiferroic composite

被引：54

作者：

Sun, Wei-Hai ^{[1
]}

Ju, Gui-Ling ^{[2
]}

Pan, Jing-Wen ^{[1
]}

Li, Yong-Dong ^{[1
]}

机构：

[1] Acad Armored Force Engn, Dept Mech Engn, Beijing 100072, Peoples R China

[2] Acad Armored Force Engn, Dept Fundamental Courses, Beijing 100072, Peoples R China

来源：

ULTRASONICS | 2011年 / 51卷 / 07期

关键词：

Multiferroic composites; Imperfect interface; Piezoelectric and piezomagnetic stiffening; SH wave; Phase velocity; PIEZOELECTRIC WAVES; CYLINDER; SCATTERING;

D O I：

10.1016/j.ultras.2011.04.002

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Studied in the present work is the propagation of SH wave in a cylindrically multiferroic composite consisting of a piezoelectric layer and a piezomagnetic central cylinder. It is assumed that the interface in the composite is damaged mechanically, magnetically or electrically. The dispersion relations of SH wave are obtained for two kinds of electric-magnetic boundary conditions at the free surface, and then the phase velocity is calculated numerically. Parametric studies on the phase velocity yield three main conclusions. (a) The mechanical imperfection may remarkably reduce the phase velocity, depending on the combination of the values of the wavenumber and the thickness ratio. (b) The magneto-electrical imperfection has no obvious effect on the phase velocity in any cases. (c) The piezoelectric and piezomagnetic stiffening can increase the phase velocity. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：831 / 838

页数：8