Cyclic fatigue behavior of cracked piezoelectric ceramics in three-point bending under electric fields

Fumio Narita, Yasuhide Shindo

Research output: Contribution to journalConference article

Abstract

We report theoretical and experimental examination of the cyclic fatigue behavior in cracked piezoelectric ceramics under direct current (DC) and alternating current (AC) electric fields. Cyclic fatigue tests were carried out in three-point bending with the single-edge precracked-beam (SEPB) specimens. The crack was created normal to the poling direction. Numbers of cycles to failure under sinusoidal mechanical loads and DC/AC electric fields were obtained from the experiment. Plane strain finite element analysis was also conducted, and the effects of electric fields and polarization switching/domain wall motion on the energy release rate were discussed in detail. In addition, the fracture surfaces were examined by scanning electron microscopy to correlate with fatigue characteristics

Original languageEnglish
Pages (from-to)141-147
Number of pages7
JournalAES-ATEMA International Conference Series - Advances and Trends in Engineering Materials and their Applications
Volume2014-January
Issue numberJanuary
Publication statusPublished - 2014 Jan 1
Event18th AES-ATEMA International Conference on Advances and Trends in Engineering Materials and Their Applications, ATEMA TORONTO 2014 - Toronto, Canada
Duration: 2014 Aug 112014 Aug 15

Keywords

  • Cyclic fatigue
  • Finite element method
  • Material testing
  • PZT ceramics
  • Piezomechanics
  • Smart materials and structures

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)

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