Analysis of a Crack in a Linear Electrostrictive Ceramic Subjected to Electric Fields

- Journal title : Transactions of the Korean Society of Mechanical Engineers A
- Volume 25, Issue 2, 2001, pp.235-241
- Publisher : The Korean Society of Mechanical Engineers
- DOI : 10.22634/KSME-A.2001.25.2.235

Title & Authors

Analysis of a Crack in a Linear Electrostrictive Ceramic Subjected to Electric Fields

Beom, Hyeon-Gyu; Jeong, Gyeong-Mun; Gang, Sang-Hyeon;

Beom, Hyeon-Gyu; Jeong, Gyeong-Mun; Gang, Sang-Hyeon;

Abstract

A crack with electrically conducting surfaces in a linear electrostrictive ceramic subjected to uniform electric fields is analyzed. Complete forms of electric fields and elastic fields for the crack are derived by using the complex function theory. The linear electromechanical theory predicts overlapping of the traction free crack surfaces. It is shown that the surfaces of the crack are contact near the crack tip. The contact zone size obtained on the basis of the linear dielectric theory for the conducting crack does not depend on the electric fields and depends on only the original crack and the material property for the linear electrostrictive ceramic.

Keywords

Electrostrictive Ceramic;Crack;Electric Field;Elastic Field;Contact;Complex Function Theory;Linear Dielectric Theory;

Language

Korean

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