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Title:
Crack deflection at an interface between dissimilar elastic-materials
Author: He MY(何明元); Hutchinson JW
Source: International Journal of Solids and Structures
Issued Date: 1989
Volume: 25, Issue:9, Pages:1053-1067
Abstract: A crack intersecting an interface between two dissimilar materials may advance by either penetrating through the interface or deflecting into the interface. The competition between deflection and penetration can be assessed by comparison of two ratios: (i) the ratio of the energy release rates for interface cracking and crack penetration; and (ii) the ratio of interface to material fracture energies. Residual stresses caused by thermal expansion misfit can influence the energy release rates of both the deflected and penetrating crack. This paper analyses the role of residual stresses. The results reveal that expansion misfit can be profoundly important in systems with planar interfaces (such as layered materials, thin film structures, etc.), but generally can be expected to be of little significance in fiber composites. This paper corrects an earlier result for the ratio of the energy release rate for the doubly deflected crack to that for the penetrating crack in the absence of residual stress.
Language: 英语
Indexed Type: SCI
Corresponding Author: HE, MY (reprint author), CHINESE ACAD SCI,INST MECH,BEIJING,PEOPLES R CHINA.
Related URLs: 查看原文
DOC Type: Article
WOS Subject: Mechanics
WOS Subject Extended: Mechanics
WOS ID: WOS:A1989AQ52100005
ISSN: 0020-7683
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/39620
Appears in Collections:力学所知识产出(1956-2008)_期刊论文

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Recommended Citation:
He MY,Hutchinson JW. Crack deflection at an interface between dissimilar elastic-materials[J]. International Journal of Solids and Structures,1989-01-01,25(9):1053-1067.
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