Effect of electric boundary conditions on crack propagation in   ferroelectric ceramics

doi:10.1007/s10409-014-0030-0

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	Effect of electric boundary conditions on crack propagation in ferroelectric ceramics
	Li, F-X. ; Sun, Y. ; Rajapakse, R. K. N. D.
刊名	acta mechanica sinica
	2014
关键词	Ferroelectric ceramics Crack propagation Energy release rate Electric boundary conditions Domain switching ZIRCONATE-TITANATE CERAMICS ENERGY-RELEASE RATE PIEZOELECTRIC CERAMICS FRACTURE CRITERIA SWITCHING MODEL FIELD TOUGHNESS MECHANICS
DOI	10.1007/s10409-014-0030-0
英文摘要	In this paper, the effect of electric boundary conditions on Mode I crack propagation in ferroelectric ceramics is studied by using both linear and nonlinear piezoelectric fracture mechanics. In linear analysis, impermeable cracks under open circuit and short circuit are analyzed using the Stroh formalism and a rescaling method. It is shown that the energy release rate in short circuit is larger than that in open circuit. In nonlinear analysis, permeable crack conditions are used and the nonlinear effect of domain switching near a crack tip is considered using an energy-based switching criterion proposed by Hwang et al. (Acta Metal. Mater., 1995). In open circuit, a large depolarization field induced by domain switching makes switching much more difficult than that in short circuit. Analysis shows that the energy release rate in short circuit is still larger than that in open circuit, and is also larger than the linear result. Consequently, whether using linear or nonlinear fracture analysis, a crack is found easier to propagate in short circuit than in open circuit, which is consistent with the experimental observations of Kounga Njiwa et al. (Eng. Fract. Mech., 2006).; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000334677600004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Mechanical; Mechanics; SCI(E); EI; 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 1; ARTICLE; lifaxin@pku.edu.cn; rajaaks@sfu.ca; 2; 153-160; 30
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154309]
专题	工学院
推荐引用方式 GB/T 7714	Li, F-X.,Sun, Y.,Rajapakse, R. K. N. D.. Effect of electric boundary conditions on crack propagation in ferroelectric ceramics[J]. acta mechanica sinica,2014.
APA	Li, F-X.,Sun, Y.,&Rajapakse, R. K. N. D..(2014).Effect of electric boundary conditions on crack propagation in ferroelectric ceramics.acta mechanica sinica.
MLA	Li, F-X.,et al."Effect of electric boundary conditions on crack propagation in ferroelectric ceramics".acta mechanica sinica (2014).