탄성체에 접합된 압전 스트립에서의 균열 전파 거동

Crack Propagation Behavior in a Piezoelectric Strip Bonded to Elastic Materials

  • 권순만 (연세대학교 기계공학과) ;
  • 최효승 (연세대학교 기계공학과 대학원) ;
  • 이강용 (연세대학교 기계공학과)
  • 발행 : 2001.06.27

초록

In this paper, we consider the dynamic electromechanical behavior of an eccentric Yoffe permeable crack in a piezoelectric ceramic strip sandwiched between two elastic materials under the combined anti-plane mechanical shear and in-plane electrical loadings. Fourier transforms are used to reduce the problem to the solution of two pairs of dual integral equations, which are then expressed to a Fredholm integral equation of the second kind. The initial crack propagation orientation for PZT-5H piezoceramics is predicted by maximum energy release rate criterion.

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