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Effect of Domain Switching on Crack Growth in Ferroelectric Ceramics  

정경문 (전남대학교 대학원 기계공학과)
박재연 (전남대학교 대학원 기계공학과)
범현규 (전남대학교 기계공학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.11, 2003 , pp. 142-149 More about this Journal
Abstract
Domain switching effect on crack growth in ferroelectric ceramics under combined electric and mechanical loading is investigated. The shape and size of the switching zone is shown to depend strongly on the relative magnitude between the applied electric field and stress field as well as on the ratio of the coercive electric field to the yield electric field. The toughening mechanism is thought to be ferroelectric domain switching leading to the development of a process zone around the crack. Crack-tip stress intensity factor induced by domain switching for the steady state crack growth is numerically obtained.
Keywords
Domain switching; Crack growth; Ferroelectric ceramics; Coercive electric field; Yield electric field; Yield electric field;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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