Fracture mechanics of piezoelectric materials - Where are we right now?
Fracture mechanics of piezoelectric materials - Where are we right now?
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DOI：
10.1016/j.engfracmech.2009.03.016
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发表时间：
2010-01-01
影响因子：
5.4
通讯作者：
Kuna, Meinhard
中科院分区：
文献类型：
--
作者：
Kuna, Meinhard
压电和铁电材料在机电器件中得到了广泛的应用。微机电系统和智能复合材料为了评估这些材料和部件的强度和耐久性，在过去的三十年中进行了详尽的理论和实验研究。本文的目的是给一个简短的概述和批评性的讨论在压电断裂力学领域的现状。一番介绍之后。线性压电断裂理论的解释，强调特殊的功能，如各向异性。模式混合和裂纹的电特性。其次，提出了建议的断裂准则，并与断裂试验中的实验观察进行了对比。考虑了电场和机械场作用下的静态、循环和动态载荷下的裂纹。一个很大的挑战是解决非线性现象和铁电畴切换在断裂过程区最后，得出的结论与开放的问题和理想的未来研究领域。限制论文的范围。界面裂纹的断裂行为将不会得到解决（C）2009爱思唯尔有限公司保留所有权利。
Piezoelectric and ferroelectric materials have gained extensive applications in electromechanical devices. microelectromechanical systems and smart composite materials In order to assess the strength and durability of those materials and components, exhaustive theoretical and experimental investigations have been performed over the past three decades. The aim of the paper is to give a short overview and a critical discussion about the present state in the field of piezoelectric fracture mechanics. After an introduction. linear piezoelectric fracture theory is explained with emphasis to special features like anisotropy. mode mixture and electric properties of cracks. Next, suggested fracture criteria are presented and contrasted with experimental observations in fracture testing. Cracks under static, cyclic and dynamic loading by electrical and mechanical fields are taken into account. A great challenge is to tackle the non-linear phenomena and ferroelectric domain switching in the fracture process zone Finally, conclusions are drawn with respect to open problems and desirable future research areas. To limit the scope of the paper. fracture behavior of interface cracks will not be addressed (C) 2009 Elsevier Ltd. All rights reserved.