| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 771387 | Engineering Fracture Mechanics | 2007 | 14 Pages |
Abstract
In the present paper, we report the success of applying the concepts of fracture mechanics to the failure of electrically conductive cracks in piezoelectric ceramics. We reexamine the charge-free zone model and the experimental results on poled lead zirconate titanate ceramics. We use the secant piezoelectric constant to describe the piezoelectric behavior at high electric field near a conductive crack tip. With this modification, the charge-free zone model provides more physical insight into the failure behavior of electrically conductive cracks in piezoelectric ceramics.
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Mechanical Engineering
Authors
Tong-Yi Zhang, Guoning Liu, Tianhong Wang, Pin Tong,