Fatigue life of piezoelectric ceramics and evaluation of internal damage

Mamoru Mizuno; Yuta Enomoto; Mitsuhiro Okayasu

doi:10.1016/j.proeng.2010.03.032

Fatigue life of piezoelectric ceramics and evaluation of internal damage

Mamoru Mizuno, Yuta Enomoto, Mitsuhiro Okayasu

Research output: Contribution to journal › Conference article › peer-review

9 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 language	English
Pages (from-to)	291-297
Number of pages	7
Journal	Procedia Engineering
Volume	2
Issue number	1
DOIs	https://doi.org/10.1016/j.proeng.2010.03.032
Publication status	Published - Apr 2010
Externally published	Yes
Event	10th International Fatigue Congress, FATIGUE 2010 - Prague, Czech Republic Duration: Jun 6 2010 → Jun 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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10.1016/j.proeng.2010.03.032

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title = "Fatigue life of piezoelectric ceramics and evaluation of internal damage",

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.",

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AU - Mizuno, Mamoru

AU - Enomoto, Yuta

AU - Okayasu, Mitsuhiro

PY - 2010/4

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N2 - 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.

AB - 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.

KW - Apparent density

KW - Area fraction of cavities

KW - Compression-compression fatigue test

KW - Damage variable

KW - Dependence on frequency

KW - Fatigue life

KW - Piezoelectric ceramics

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T2 - 10th International Fatigue Congress, FATIGUE 2010

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ER -

Fatigue life of piezoelectric ceramics and evaluation of internal damage

Abstract

Keywords

ASJC Scopus subject areas

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