Results 161 to 170 of about 187,982 (212)

Mixed-mode crack opening in fatigue

Materials Science and Engineering, 1983
Abstract The crack-opening displacements at distances in the range 1–30 μm behind the crack tip were measured in mode I (parallel to the loading axis) and in mode II for the ingot aluminum alloy 7075 in the T651 condition and the similar powder metallurgy aluminum alloy MA-87 using the stereo-imaging technique. A substantial mode II opening was found
D.L. Davidson, J. Lankford
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FATIGUE CRACK GROWTH UNDER MIXED MODE LOADING

Fatigue & Fracture of Engineering Materials & Structures, 1981
Abstract —Mixed mode fatigue crack growth is analysed using Sih's strain energy density approach. A centre crack panel geometry loaded under uniaxial cyclic tension is considered. The crack angle is varied from 30° to 90°. A procedure for the determination of crack propagation life is outlined.
A. B. PATEL, R. K. PANDEY
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Fatigue Crack Growth in Mixed Mode Loading

Journal of Engineering Materials and Technology, 1991
In this paper, a direct approach based on the mixed mode Dugdale model, the accumulated plastic displacement criterion for crack propagation and the cyclic J-integral concept is used to develop equations to predict the mixed mode fatigue crack growth.
Wei-Ren Chen, L. M. Keer
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A mixed mode fatigue crack closure model

Engineering Fracture Mechanics, 1985
Abstract Fatigue crack closure conditions leading to mixed mode crack-tip stress states are discussed. A closure model based on contact between impinging fracture surface asperities is introduced. Asperity angle, magnitude of mode II interference, friction between contacting surfaces and distance of the contact surfaces from the crack-tip are ...
R.L. Carlson, C.J. Beevers
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Effects of mixed-mode overloading on the mixed-mode I+II fatigue crack growth

Archive of Applied Mechanics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Seifi, Rahman, Eshraghi, Mohammad
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Mechanics of mixed mode small fatigue crack growth

Engineering Fracture Mechanics, 1987
Abstract An elastic-plastic analysis of a mixed mode crack was conducted under general yielding conditions using a finite element method. Based on the finite element analysis, a formula of the J-integral was developed, and the behavior of the crack opening or sliding displacement was investigated. Crack growth mechanics was discussed to explain mixed
T. Hoshide, D.F. Socie
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Using a Mixed-Mode Fatigue Delamination Criterion

1996
This paper applies a mixed-mode delamination onset criterion to predict edge delamination in quasi-isotropic laminates of IM7/8320 and IM7/5260. The laminates were tested statically and in fatigue at 23 and 175°C. The three stages involved in this process were: (1) determination of the mixed-mode ratio, (2) determination of the mixed-mode delamination ...
RH Martin, P Sriram, SJ Hooper
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Simulation of mixed mode fatigue crack growth

Computers & Structures, 1991
Abstract The computation process including ADINA for predicting crackpath and structure lifetime under mixed mode loading is presented. Using the results of a FEM analysis, the J -integral is computed. The separation into J 1 , and J 11 leads, in the case of linear elastic material behaviour, to the stress intensity factors K 1 and K 11 ...
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Plane stress mixed mode fatigue crack propagation

Engineering Fracture Mechanics, 1995
Abstract A complex crack trajectory has been obtained by subsequently changing the orientation of a straight crack at the center of a thin circular disk of aluminum 2024-0 with respect to uniaxially applied constant amplitude fatigue loading. The propagation of the main crack has been performed by producing a series of kinks and pseudo-asymmetric ...
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Mixed-mode fatigue crack growth under biaxial loading

International Journal of Fatigue, 1984
Abstract Studies on crack growth in a panel with an inclined crack subjected to biaxial tensile fatigue loading are presented. The strain energy density factor approach is used to characterize the fatigue crack growth. The crack growth trajectory as a function of the initial crack angle and the biaxiality ratio is also predicted.
R PANDEY, A PATEL
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