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A Ray Theory for Elastodynamic Stress-Intensity Factors
Journal of Applied Mechanics, 1978Elastodynamic stress-intensity factors generated by the interaction of wave motions with a crack are analyzed. It is shown that in an asymptotic approximation, which is valid for high frequencies, the stress-intensity factors at the edge of a crack are related to the fields of incident rays by a matrix of stress-intensity factor coefficients, which can
Achenbach, J. D., Gautesen, A. K.
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Strict Bounds for Computed Stress Intensity Factors
Civil-Comp Proceedings, 2009This paper addresses the subject of local error estimators for finite element methods involving local enrichment. More precisely, we focus on the extended finite element method, which was developed in the last decade for fracture mechanics. We present a method for the calculation of accurate strict bounds of mixed-mode stress intensity factors ...
Panetier, Julien +2 more
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A Stress Intensity Factor Tracer
Journal of Applied Mechanics, 1985A new optical method, Stress Intensity Factor Tracer (SIFT), has been developed. The device measures continuously the real-time stress intensity factor variation, K1(t), of a moving crack tip using a single, stationary photodetector. The method uses the fact that any variation in K1(t) leads to a change in the intensity of light, I(t), impinging on a ...
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Journal of Thermal Stresses, 2010
The equations of thermoelasticity are first rewritten in Hamiltonian form where the variables are separable in spatial coordinates. The symplectic eigensolutions satisfying the boundary conditions along the crack faces are solved analytically from the homogeneous equations.
Andrew Y. T. Leung +2 more
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The equations of thermoelasticity are first rewritten in Hamiltonian form where the variables are separable in spatial coordinates. The symplectic eigensolutions satisfying the boundary conditions along the crack faces are solved analytically from the homogeneous equations.
Andrew Y. T. Leung +2 more
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Stress intensity factors of a crack in a composedcircular cylinder
International Journal of Solids and Structures, 1999zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhang, Xiangzhou, Hasebe, Norio
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Summary of Stress-Intensity Factors
1996Abstract The stress-intensity concept is based on the parameter that quantifies the stresses at a crack tip. This article summarizes some stress-intensity factors for various crack geometries commonly found in structural components. Through-the-thickness cracks may be located in the middle of a plate; at the edge of a plate; or at the
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Dynamic Stress Intensity Factor
2003An infinite strip of height 2h with a semi-infinite crack is rigidly clamped along its upper and lower faces at y = ± h (Figure 1). The upper and lower faces are moved in the positive and negative y-direction over distances u0, respectively. Determine the dynamic stress intensity factor K(t) during steady state crack propagation.
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Minimax approximation to stress intensity factors with mathematica
Computers & Structures, 1992Abstract The use of minimax approximation is suggested as the best possible approach during the evaluation of stress intensity factors from the respective integral including the loading distribution and the corresponding weight/Green function. This kind of approximation is generally better than alternative methods.
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Stress intensity factors for cracked wedges
International Journal of Solids and Structures, 1981Abstract The elasticity solution to the problem of a cracked semi-infinite wedge is presented. The crack emanates from the wedge apex bisecting the wedge angle. Crack surfaces are subjected to a pair of opposing concentrated forces directed either normal or tangential to the crack plane and located an arbitrary distance from the wedge tip.
Stone, S. F., Westmann, R. A.
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Determination of stress intensity factors
1982The application of fracture mechanics principles bears largely upon the stress intensity factor. An essential part of the solution of a fracture problem in linear elastic fracture mechanics is the establishment of the stress intensity factor for the crack problem under consideration. Since the introduction of fracture mechanics much effort has been put
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