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2021
Griffith’s instability criterion regards structural configurations with cracks set orthogonally to the direction of the maximum principal stress. In actual fact, this symmetrical mode of applying a load to the defect occurs only in fracture toughness tests, whereas the fractures occurring in structures when they are in service indicate how the ...
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Griffith’s instability criterion regards structural configurations with cracks set orthogonally to the direction of the maximum principal stress. In actual fact, this symmetrical mode of applying a load to the defect occurs only in fracture toughness tests, whereas the fractures occurring in structures when they are in service indicate how the ...
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Mode II Fatigue Crack Propagation
Journal of Basic Engineering, 1971Fatigue crack propagation rates were obtained for 2024-T3 bare aluminum plates subjected to in-plane, mode I, extensional loads and transverse, mode II, bending loads. These results were compared to the results of Iida and Kobayashi for in-plane mode I-mode II extensional loads.
R. Roberts, J. J. Kibler
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Fatigue & Fracture of Engineering Materials & Structures, 1996
Abstract Mode II stable crack extension has been examined for an aircraft grade aluminium alloy D16AT. Both theoretical and experimental results are presented. The experimental observations include load displacement diagrams, plastic wake, crack front tunnelling and scanning electron micrographs of the fracture surfaces.
MOURAD, AHI, MAITI, SK
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Abstract Mode II stable crack extension has been examined for an aircraft grade aluminium alloy D16AT. Both theoretical and experimental results are presented. The experimental observations include load displacement diagrams, plastic wake, crack front tunnelling and scanning electron micrographs of the fracture surfaces.
MOURAD, AHI, MAITI, SK
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Mixed Mode Cracking in Layered Materials
1991The aim is to pull together recent work on the fracture of layered materials. The potential application of fracture mechanics of layered materials ranges over a broad spectrum of problem areas. Included are: protective coatings, multilayer capacitors, thin film/substrate systems for electronic packages, layered structural composites of many varieties ...
J.W. Hutchinson, Z. Suo
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Fatigue & Fracture of Engineering Materials & Structures, 1987
Abstract— The fatigue crack growth behavior of small part‐through cracks in 1045 steel and Inconel 718 subjected to biaxial loading has been investigated. Experiments were performed on thin‐wall tubular specimens loaded in tension, torsion and combined tension torsion.
D. F. Socie, C. T. Hua, D. W. Worthem
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Abstract— The fatigue crack growth behavior of small part‐through cracks in 1045 steel and Inconel 718 subjected to biaxial loading has been investigated. Experiments were performed on thin‐wall tubular specimens loaded in tension, torsion and combined tension torsion.
D. F. Socie, C. T. Hua, D. W. Worthem
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Nonlinear crack opening integral: Mode mixity for finite cracks
Engineering Fracture Mechanics, 2017Abstract In this work the incremental energy release rate is analyzed for single-lap adhesive joints by means of the crack closure/opening integral. To this aim, geometrically nonlinear numerical analyses are performed. For nonlinear elastic analyses the relationship between nodal forces and displacements during nodal load reduction generally cannot ...
A. Talmon l’Armée +4 more
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The Significance of Sliding Mode Crack Closure on Mode III Fatigue Crack Growth
1988During Mode III loading, the surfaces of a crack move parallel to each other; friction, abrasion, and mutual support of the contacting parts of the microscopically rough crack faces result. These energy-dissipative processes reduce the effective load at the crack tip, a phenomenon known as “sliding mode crack closure” (SMCC).
EK Tschegg, SE Stanzl
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Mixed-Mode Fatigue Crack Propagation of Penny-Shaped Cracks
Journal of Engineering Materials and Technology, 1993A three-dimensional penny-shaped crack under combined tensile and shear loadings is analyzed. The assumptions of Dugdale are applied to estimate the effects of plasticity around the edge of the crack. The solution for mode I tensile loading is well established within the context of the Dugdale assumptions, and for the case of shear loading, approximate
W. R. Chen, L. M. Keer
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Fatigue crack propagation modes: plastic deformation mode and damage accumulation mode
International Journal of Fracture, 2020To define the fatigue crack propagation mode for the prediction and classification of the experimental results based on its evolution mechanism, successive mesoscopic observations of a fatigue process under pure cyclic mode II loading are performed. Thus, damage accumulation, which is considered to be a vacancy accumulation, is found to be a mechanism.
Shigeru Hamada +4 more
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Nearly circular shear mode cracks
International Journal of Solids and Structures, 1988In this paper we study the elasticity problems of a planar crack, lying in an infinite three-dimensional solid, the front of which differs only slightly form a circle. The crack system is subjected to loadings that induce shear mode stress intensity factors at the crack front.
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