Results 271 to 280 of about 4,014,681 (349)

Nonlinear crack opening integral: Mode mixity for finite cracks

Engineering Fracture Mechanics, 2017
Abstract 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, S. Hell, P.L. Rosendahl, J. Felger, W. Becker   +4 more
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The Significance of Sliding Mode Crack Closure on Mode III Fatigue Crack Growth

1988
During 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, 1993
A 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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Sliding mode crack closure and mode III fatigue crack growth in mild steel

Acta Metallurgica, 1983
Abstract Mode III fatigue crack growth behaviour in AISI C1018 steel ( R = −1, 1 Hz) is investigated in circumferentially notched cylindrical specimens. The crack surfaces in contact glide against each other, the friction, abrasion and mutual support between them reducing the effective stress at the crack tip (“sliding mode crack closure”).
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Multiaxial mixed-mode cracking – small crack initiation and propagation*

Materials Testing, 2006
Abstract Both the fatigue crack path and fatigue life of CK45 steel and 42CrMo4 steel under various multiaxial loading paths are studied in this paper. The replica method was applied to monitor the crack initiation and small crack growth, the fractographic analyses were carried out on the fracture surface and the crack initiation angle ...
Manuel de Freitas, Luis Reis, Bin Li
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Mode III interface crack propagation

Engineering Fracture Mechanics, 1989
Abstract The asymptotic stress and displacement fields of a propagating interface crack under mode III conditions are determined by using the eigenfunction expansion technique. It is found that the well-known square root singularity is unchanged. A moving interface crack of constant length with constant speed is used as a simple illustrative example.
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Dynamic effects in mode III crack bifurcation

International Journal of Solids and Structures, 1986
Transient elastodynamic nonplanar self-similar Mode III crack growth in brittle materials is examined. The dynamic similarity and Chaplygin's transformation reduce the class of problems considered to the solution of Laplace's equation in a semi-infinite strip.
Dempsey, John P., Kuo, Mao-Kuen, Bentley, Diane L.   +2 more
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Fatigue crack propagaion under mixed mode loading

Applied Mathematics and Mechanics, 1984
Mixed mode fatigue crack propagation is analyzed, using a centre cracked plate geometry, loaded under uniaxial cyclic tension.
Cao, Guixin, Ju, Dingyi
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Intersonic mode II crack acceleration

Fatigue & Fracture of Engineering Materials & Structures, 1999
ABSTRACTAn analytic solution is given for intersonic mode II crack acceleration. The solution is obtained by first considering a self‐similar problem, motion of a semi‐infinite crack at constant velocity, under the action of a constant crack face load, appearing behind the crack edge.
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Mixed-mode crack propagation through reinforced concrete

Engineering Fracture Mechanics, 2007
This paper presents the results of a very recent experimental research program aimed at investigating mixed-mode fracture of reinforced concrete. The tests were designed so that only one single mixed-mode crack generates and propagates through the specimen, as opposed to the usual dense crack pattern found in most of the tests in scientific literature.
J.R. Carmona, J.R. Carmona, J.R. del Viso   +2 more
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