Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Effect of Domain Switching on Crack Growth in Ferroelectric Ceramics

분역회전이 강유전체 세라믹내의 균열성장에 미치는 영향

  • 정경문 (전남대학교 대학원 기계공학과) ;
  • 박재연 (전남대학교 대학원 기계공학과) ;
  • 범현규 (전남대학교 기계공학과)
  • Published : 2003.11.01
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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

References

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