Abstract
When piezoelectric ceramics are subjected to mechanical and electrical load, they can fracture prematurely due to their brittle behavior. Hence, it is important to know the electro-elastic interaction and fracture behavior of piezo-electric materials. The problem of a through crack in a piezoelectric strip of finite thickness is studied in this paper. Fourier transforms are used to reduce the problem to the solution of singular integral equations. The model technique can solve for polarization in an arbitrary direction and material anisotropy. Numerical values of the crack-tip field amplification for a piezoelectric strip under in-plane electromechanical loading are obtained. Energy density factor criterion is applied to obtain the maximum of the minimum energy density and direction of crack initiation. The influence of crack length and crack position on stress intensity and energy density factors is discussed. (C) 2000 Elsevier Science Ltd. All rights reserved.
| Original language | English |
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| Pages (from-to) | 35-47 |
| Number of pages | 13 |
| Journal | Theoretical and Applied Fracture Mechanics |
| Volume | 34 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2000 |