Interaction of an edge dislocation with an interfacial crack

Journal Article · Tue Sep 15 04:00:00 EDT 1992 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.351614· OSTI ID:7011349

Zhang, T; Li, J C.M. ^[1]

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1. Materials Science Program, Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627 (United States)

The stress and displacement fields of an edge dislocation near a semi-infinite or a finite interfacial crack are formulated by using the complex potential theory of Muskhelishvili's elasticity treatment of plane strain problems. The image forces exerted on the dislocation have an oscillatory character (with respect to the dislocation position) if the dislocation is originated elsewhere and moves to the vicinity of a finite interfacial crack. There is no such oscillation of image forces if the edge dislocation is emitted from the finite interfacial crack or if the crack is semi-infinite. The stress intensity factors produced by the edge dislocation also have an oscillatory character for both semi-infinite and finite interfacial cracks. They also depend on whether the dislocation is emitted from the crack or comes from elsewhere.

• DOE Contract Number: FG02-85ER45201
• OSTI ID: 7011349
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 72:6; ISSN 0021-8979; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
665000* -- Physics of Condensed Matter-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRACKS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISLOCATIONS
EDGE DISLOCATIONS
ELASTICITY
FRACTURE MECHANICS
INTERACTIONS
INTERFACES
LINE DEFECTS
MECHANICAL PROPERTIES
MECHANICS
SOLIDS
TENSILE PROPERTIES