A screw dislocation interacting with an interfacial crack in two dissimilar piezoelectric media

Ai Kah Soh; Jin Xi Liu; Dai Ning Fang

doi:10.1002/1521-3951(200208)232:2<273::AID-PSSB273>3.0.CO;2-K

A screw dislocation interacting with an interfacial crack in two dissimilar piezoelectric media

Ai Kah Soh, Jin Xi Liu^*, Dai Ning Fang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

18 Citations (Scopus)

Abstract

In this paper the interaction of a screw dislocation with a semi-infinite interfacial crack of two dissimilar piezoelectric materials is considered. The expressions for the electroelastic fields, intensity factors, and image force acting on a screw dislocation are given in explicit form in terms of complex functions. When one of two materials is purely elastic, the influence of electromechanical coupling on the stress intensity factor and the image force is analyzed in detail. In addition, the results obtained in the present paper can be reduced to several special cases that have been reported previously in the literature.

Original language	English
Pages (from-to)	273-282
Number of pages	10
Journal	Physica Status Solidi (B): Basic Research
Volume	232
Issue number	2
DOIs	https://doi.org/10.1002/1521-3951(200208)232:2<273::AID-PSSB273>3.0.CO;2-K
Publication status	Published - 1 Aug 2002
Externally published	Yes

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AU - Liu, Jin Xi

AU - Fang, Dai Ning

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N2 - In this paper the interaction of a screw dislocation with a semi-infinite interfacial crack of two dissimilar piezoelectric materials is considered. The expressions for the electroelastic fields, intensity factors, and image force acting on a screw dislocation are given in explicit form in terms of complex functions. When one of two materials is purely elastic, the influence of electromechanical coupling on the stress intensity factor and the image force is analyzed in detail. In addition, the results obtained in the present paper can be reduced to several special cases that have been reported previously in the literature.

AB - In this paper the interaction of a screw dislocation with a semi-infinite interfacial crack of two dissimilar piezoelectric materials is considered. The expressions for the electroelastic fields, intensity factors, and image force acting on a screw dislocation are given in explicit form in terms of complex functions. When one of two materials is purely elastic, the influence of electromechanical coupling on the stress intensity factor and the image force is analyzed in detail. In addition, the results obtained in the present paper can be reduced to several special cases that have been reported previously in the literature.

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A screw dislocation interacting with an interfacial crack in two dissimilar piezoelectric media

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