ISSN:
1573-2673
Keywords:
Layered half-plane
;
collinear cracks
;
graded interfacial zone
;
nonhomogeneous properties
;
singular integral equations
;
stress intensity factors.
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Abstract The problem of collinear cracks embedded in a layered half-plane is investigated. The medium consists of a surface layer and a semi-infinite substrate bonded through an interfacial zone with graded properties. The interfacial zone is treated as a nonhomogeneous layer and its elastic modulus is assumed to vary continuously in thickness direction. Three collinear cracks of different length exist, one in each one of the constituent materials perpendicular to the nominal interfaces. A system of singular integral equations applicable under both the mechanical and transient thermal loading conditions is derived. Part I of the paper addresses the details that lead to the derivation of the integral equations and the cracking behavior in the layered medium subjected to mechanical loading. As a result, the values of stress intensity factors are presented as functions of geometric and material parameters of the problem. In Part II, under the uncoupled, quasi-static thermoelastic condition, the response of collinear cracks to thermal shock loading is considered.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1007524104202
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