압전재료에서 원공결함이 균열에 미치는 영향

초록

In this paper, the influence of circular void on a crack in piezoelectric materials under mechanical and electric loadis is investigated by using finite element method code, ANSYS. Both ceramics and piezoelectric materials are compared with stress intensity factor and crack extension force at cracfk tip at arbitrary located circular void under Mode I loads. It was found that piezoelectric materials' crack extension force is larger than ceramics.