Fatigue life of piezoelectric ceramics and evaluation of internal damage

Mamoru Mizuno, Yuta Enomoto, Mitsuhiro Okayasu

Research output: Contribution to journalConference article

7 Citations (Scopus)

Abstract

Compression-compression fatigue tests were performed for PZT piezoelectric ceramics by using columnar specimens at various frequencies of cyclic loading. In fatigue tests, stress ratio was fixed to R=0.05, and maximum compressive stress was changed. A damage variable based on the continuum damage mechanics was evaluated by variation of apparent density of specimens. Moreover, area fraction of cavities on fracture surface was evaluated. As a result of experiments, the dependence of fatigue life on frequency of cyclic loading was clarified. It was also found that the damage variable is independent of the frequency, while the area fraction of cavities depends on the frequency.

Original languageEnglish
Pages (from-to)291-297
Number of pages7
JournalProcedia Engineering
Volume2
Issue number1
DOIs
Publication statusPublished - Apr 2010
Externally publishedYes
Event10th International Fatigue Congress, FATIGUE 2010 - Prague, Czech Republic
Duration: Jun 6 2010Jun 11 2010

Keywords

  • Apparent density
  • Area fraction of cavities
  • Compression-compression fatigue test
  • Damage variable
  • Dependence on frequency
  • Fatigue life
  • Piezoelectric ceramics

ASJC Scopus subject areas

  • Engineering(all)

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