Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/34558
Title: Interactions of a sub-surface crack with a center of dilatation in an elastic half-plane
Authors: Chau, KT 
Yang, X
Wong, RCK
Keywords: Center of dilatation
Sub-surface crack
Stress intensity factors
Half-plane
Issue Date: 2002
Publisher: Pergamon Press
Source: Engineering fracture mechanics, 2002, v. 69, no. 17, p. 1827-1844 How to cite?
Journal: Engineering fracture mechanics 
Abstract: This paper examines the interaction between a crack parallel to the free surface of an elastic half-plane and an internal center of dilatation. The problem is decomposed into two auxiliary problems. When the center of dilatation approaches the crack tip, two kinds of singularity are analytically obtained. If the overburden stress and the friction on crack surface are neglected, both modes I and II stress intensity factors (KI and KII) are induced at the crack tips. The maximum of KI and KII occurs when the center of dilatation is located in front of the crack tips. The tensile cracking is likely to be prohibited by the overburden stress, while shear cracking remains possible even including the effects of both overburden and friction on the crack surface.
URI: http://hdl.handle.net/10397/34558
ISSN: 0013-7944
EISSN: 1873-7315
DOI: 10.1016/S0013-7944(02)00063-2
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