Abstract
The strength of piezoelectric ceramics is analysed for a plate suddenly exposed to an environmental medium of different temperatures. The admissible temperature jump the material can sustain is studies using the stress- and fracture-toughness-based failure criteria. The critical parameters governing the level of the transient thermal stress in piezoelectric ceramics are identified. Solutions are obtained for the maximum thermal shock that the plate can sustain without failure, under the conditions that (i) maximum local tensile stress equals the tensile strength of the ceramic, and (ii) maximum stress intensity factor for representative pre-existing cracks equals the fracture toughness of the ceramic.
Original language | English |
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Pages (from-to) | 929-936 |
Number of pages | 8 |
Journal | Journal of the American Ceramic Society |
Volume | 87 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2004 |
Keywords
- piezoelectric materials
- thermal stresses