Title of article :
Applicability of crack energy density to fracture strength evaluation of piezoelectric ceramics
Author/Authors :
Nam، نويسنده , , Byeung-Gun and Liu، نويسنده , , Rongfeng and Tsuchida، نويسنده , , Shigehiro and Watanabe، نويسنده , , Katsuhiko، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2007
Pages :
5
From page :
343
To page :
347
Abstract :
A lot of studies have been made to grasp and describe fracture behavior of piezoelectric material under electromechanical loadings. However, even the criterion to describe the dependence of static fracture strength on electric field has not been established yet. In this paper, a fracture criterion based on mechanical contribution of crack energy density is proposed and its applicability is studied by analyzing not only the three-point bending fracture test results by the authors on piezoelectric ceramics called C-2 but also the compact tension fracture tests by Park and Sun on piezoelectric ceramics called PZT-4, based on the criterion.
Keywords :
Crack energy density , Fracture test , Electric yielding , Finite element analysis , Polarization switching , piezoelectric material
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Serial Year :
2007
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Record number :
2151328
Link To Document :
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