Results 201 to 210 of about 6,813 (255)
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Determination of Fatigue Crack Paths
International Journal of Bifurcation and Chaos, 1997The complete solution of the problem of a fatigue crack growing from an initial crack includes determination of the crack path. Macroscopic aspects of the main features of the path taken by a growing fatigue crack in a metallic material are reasonably well understood in a qualitative sense.
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Crack path stability in cracked panel
Journal of the Chinese Institute of Engineers, 2004Abstract The prediction of the crack growth path plays a significant role in the estimation of the final shape of broken solids and structures. Furthermore, the study of the crack path in broken specimens renders the loading conditions just before fracture.
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The linear elastic analysis of cracked bodies, crack paths and some practical crack path examples
Engineering Fracture Mechanics, 2016Abstract The linear elastic analysis of cracked bodies is a Twentieth Century development, with the first papers appearing in 1907. The stress intensity factor concept, introduced in 1957, developed rapidly in the 1960s, with widespread application to practical problems. Finite element analysis had a significant influence on the development of linear
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Computational crack path prediction
Theoretical and Applied Fracture Mechanics, 1985Abstract A computer program has been developed for the numerical prediction of curved crack growth paths under proportional loading conditions. The numerical prediction is performed by the step-by-step method in cooperation with the stress analysis ahead of the crack tip and the determination of the curved increment of the crack growth.
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International Journal of Fatigue, 1995
Abstract The main features of the path taken by a propagating fatigue crack are discussed. It is assumed that a material is homogeneous and isotropic on a macroscopic scale, that behaviour is essentially elastic, and that the initial crack is ‘long’. Under these conditions the path taken by a propagating fatigue crack is reasonably well understood in
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Abstract The main features of the path taken by a propagating fatigue crack are discussed. It is assumed that a material is homogeneous and isotropic on a macroscopic scale, that behaviour is essentially elastic, and that the initial crack is ‘long’. Under these conditions the path taken by a propagating fatigue crack is reasonably well understood in
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2021
Simple probabilistic models of fracture of 3D polycrystals involving transgranular and intergranular cracks are based on undamaged paths and appropriate percolation thresholds. In a second part, theoretical extensions of phase field models for crack initiation and propagation to the case of locally heterogeneous and anisotropic fracture energy are ...
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Simple probabilistic models of fracture of 3D polycrystals involving transgranular and intergranular cracks are based on undamaged paths and appropriate percolation thresholds. In a second part, theoretical extensions of phase field models for crack initiation and propagation to the case of locally heterogeneous and anisotropic fracture energy are ...
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Planar cracks running along piecewise linear paths
Proceedings of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 2004Summary: Consider a crack propagating in a plane according to a loading that results in anti-plane shear deformation. We show here that if the crack path consists of two straight segments making an angle \(\varphi \neq 0\) at their junction, examples can be provided for which the value of the stress-intensity factor (SIF) actually depends on the ...
Herrero, M. A. +2 more
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2014
In relation to fatigue crack growth, it is observed that long cracks under mixed mode loading conditions branch to follow the direction along which \(\Delta k_{\text{II}}\) is zero, but some results against this local symmetry criterion are also reported.
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In relation to fatigue crack growth, it is observed that long cracks under mixed mode loading conditions branch to follow the direction along which \(\Delta k_{\text{II}}\) is zero, but some results against this local symmetry criterion are also reported.
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Fatigue crack path manipulation for crack growth rate measurement
Engineering Fracture Mechanics, 2016Abstract It is accepted that fatigue crack paths in metals that display confined slip, such as high strength aluminium alloys, are responsive to loading direction and local microstructural orientation. It is less well recognised that crack paths in these alloys are also responsive to the loading history since certain loading sequences can produce ...
S. Barter, P. White, M. Burchill
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Crack closure and crack path prediction for curved cracks under thermal load
Engineering Fracture Mechanics, 1993Abstract Based on an integral equation formulation, a boundary element method is presented for the analysis of curved cracks under mechanical and thermal load. It takes into account possible load and crack shape-dependent crack closure effects. In conjunction with a suitable crack growth criterion, the method enables, by means of an incremental ...
D. Gross, ST. Heimer
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