DYNAMIC OBSERVATION OF CRACK-PROPAGATION IN PIEZOELECTRIC MULTILAYER ACTUATORS

被引：199

作者：

FURUTA, A ^{[1
]}

UCHINO, K ^{[1
]}

机构：

[1] PENN STATE UNIV,MAT RES LAB,UNIV PK,PA 16802

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1993年 / 76卷 / 06期

关键词：

D O I：

10.1111/j.1151-2916.1993.tb03950.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Crack propagation in multilayer piezoelectric actuators made of Pb((Ni1/3Nb2/3),Ti,Zr)O3 ceramics with an interdigital electrode configuration was observed dynamically under an applied cyclic electric field using charge coupled device microscopy. The crack was observed only under a high electric field, and it healed under zero field. The crack was initiated at the internal electrode edge and propagated from the electrode edge in three directions. The electric-field-induced displacement was measured simultaneously with the propagation. The displacement of the multilayer actuator became gradually smaller and asymmetric with respect to the sign of the field with increased driving cycle.

引用

页码：1615 / 1617

页数：3