Electric fracture and polarization switching properties of piezoelectric ceramic PZT studied by the modified small punch test
Electric fracture and polarization switching properties of piezoelectric ceramic PZT studied by the modified small punch test
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DOI：
10.1016/s1359-6454(03)00303-3
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发表时间：
2003-09
期刊：
影响因子：
9.4
通讯作者：
Y. Shindo;F. Narita;K. Horiguchi;Yasuyo Magara;M. Yoshida
中科院分区：
文献类型：
--
作者：
Y. Shindo;F. Narita;K. Horiguchi;Yasuyo Magara;M. Yoshida
通过实验和理论表征，讨论了外加电场作用下压电陶瓷的断裂行为。在商用压电陶瓷上进行了改进的小冲孔（MSP）试验。实验得到了不同电场作用下的起裂载荷。研究了高电场作用下MSP试样的断口形貌，确定了其破坏机理。采用非线性三维有限元分析计算了断裂挠度和MSP能量。提出了一种用实验和理论方法测定电效应引起的断裂和极化开关特性的方法。
The fracture behavior of a piezoelectric ceramic under applied electric fields has been discussed through experimental and theoretical characterizations. The modified small punch (MSP) tests were performed on a commercial piezoelectric ceramic. The fracture initiation loads under different electric fields were obtained from the experiment. Fracture surface was examined for the MSP specimens to identify the failure mechanisms under high electric fields. A nonlinear three-dimensional finite element analysis was also employed to calculate the fracture deflection and MSP energy. A procedure is presented for determining the fracture and polarization switching properties due to electrical effects by experimental and theoretical means.