Results 211 to 220 of about 4,688 (263)
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Fontana Dam: A Crack in the Curve
Waterpower '99, 1999Fontana Dam was constructed by Tennessee Valley Authority (TVA) during the period between 1942 to 1945. In 1972 petrographic examination disclosed small deposits of alkali-silica gel, very fine cracks in a few aggregate particles, and a deficiency in calcium hydroxide in the cement paste.
Vann A. Newell, Charles D. Wagner
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Dynamic Crack Curving and Crack Branching
1983The dynamic crack curving criterion proposed by Ramulu and Kobayashi1 is based on a micro-mechanic model of continuous micro- flaw growth and coalescence in the vicinity of the moving crack tip. It is a dynamic extension of the crack curving criterion proposed by Streit and Finnie.2 When an off-axis micro-flaw connects with the crack tip, the crack is ...
M. Ramulu, A. S. Kobayashi
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Key curve analysis of crack-growth-resistance curves
International Journal of Fracture, 1982A previously suggested relation among load, displacement, and remaining-ligament for stable crack growth was validated by examining literature data on three-point-bend and compact specimens. The resulting key curves were found to consist of one or more power-law segments, with the major portion of growth generally confined to one of the segments. The J-
I. -H. Lin, A. R. Rosenfield
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Mechanics of Materials, 1982
Abstract This paper attempts to provide a comprehensive summary of results on the following topics relating to crack kinking and curving: (a) Stress intensity factors for kinked cracks under combined loading; (b) applicability of Irwin's energy-release rate formula to kinked cracks; and (c) reasons behind crack kinking and curving.
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Abstract This paper attempts to provide a comprehensive summary of results on the following topics relating to crack kinking and curving: (a) Stress intensity factors for kinked cracks under combined loading; (b) applicability of Irwin's energy-release rate formula to kinked cracks; and (c) reasons behind crack kinking and curving.
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On the crack problems in composite materials with curved layers
International Journal of Engineering Science, 1994zbMATH Open Web Interface contents unavailable due to conflicting licenses.
PANAKHOV, PG +3 more
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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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On the Jr Curve of Surface Crack
1988With the widespread and profound developing of EPFM (Elastic-Plastic Fracture Mechanics), the necessity of the EPFM analysis for structural flaw, especially the part-through surface crack in a plate or shell, is widely recognized. Although some methods have been developed, a lot of problem has not been solved such as the ductile extension of surface ...
Jie Ning, Qing Gao, H. F. Sun
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Curve cracks lying along a parabolic curve in anisotropic body
Applied Mathematics and Mechanics, 1995A general solution for the stress and displacement of curve cracks distributing along a parabolic curve in an infinite homogeneous anisotropic medium subjected to uniform loading at infinity has been given using the Stroh's formalism and the mapping method.
Hu, Yuantai, Zhao, Xinghua
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Nonlocal Mechanics of Crack Curving
1983The nonlocal elasticity solution is obtained for the Griffith crack problem under combined loadings, Modes I and II. It is shown that the fracture begins at a critical point in the neighborhood of the crack tip. The location of the critical point is determined and the critical angle at which the crack begins to deviate from its straight line path is ...
A. Cemal Eringen, A. Suresh
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The effect of crack shape on the curve for a circumferentially cracked pipe
Engineering Fracture Mechanics, 1985Abstract The paper presents a theoretical analysis which gives the J R curve for a circumferentially cracked pipe subject to bending deformation. A through-wall crack extends over a prescribed fraction of the pipe circumference, while there is also an internal circumferential crack extending around the remainder of the pipe section ...
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