Strength evaluation of piezoelectric ceramics under transient thermal environments

Bao-Lin Wang, Yiu-Wing Mai

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

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 languageEnglish
Pages (from-to)929-936
Number of pages8
JournalJournal of the American Ceramic Society
Volume87
Issue number5
DOIs
Publication statusPublished - 2004

Keywords

  • piezoelectric materials
  • thermal stresses

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