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Effect of crack size on acoustic emission
The Journal of the Acoustical Society of America, 1975Acoustic emissions from the vicinities of cracks were monitored by a multichannel acoustic emission system, The experiment was performed on a flawed carbon steel vessel under hydraulic pressure providing a nearly uniform external stress in the vessel wall, However, the stress fields near the cracks were nonuniform.
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Effects of Grain Size on Crack Tip Mechanical Fields of Intergranular Cracking
Advanced Materials Research, 2014Intergranular stress corrosion cracking is one of important failure form of structural materials in nuclear power plants, and the initiation and development of crack at grain boundary are affected by the grain size of materials. The macroscopic model and mesoscopic model of crack propagation was established by using finite element method, and the ...
Wei Bing Wang +3 more
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Length and depth resonances of surface cracks and their use for crack size estimation
Applied Physics Letters, 1978Angular scattering from surface cracks has been used for determining the length of a surface crack. This technique assumes the physical availability of space to carry out an angular scattering experiment, and makes no estimation of the depth of the crack.
V. Domarkas +2 more
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Evaluation of the critical sizes of surface cracks
Materials Science, 2006On the basis of known expressions for the stress-intensity factors, we propose a graph-analytic method for the evaluation of the critical sizes (depth and length) of a surface semielliptic crack for a plate either in tension or in bending.
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A detailed analysis of cracks bridged by fibers—II. Cracks of intermediate size
Journal of the Mechanics and Physics of Solids, 1994Abstract In this part bridged cracks of intermediate size are studied. The goal is to determine the stress required for the propagation of bridged cracks when they are too small for the predictions of A veston et al . (1971), The Properties of Fibre Composites , IPC Science and Technology Press to apply.
G. Meda, P.S. Steif
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Electrochemical Crack Size Effect in Stress Corrosion Cracking and Corrosion Fatigue
CORROSION 2017, 2017Abstract The growth rate of small and long stress corrosion and corrosion fatigue cracks in 12Cr steam turbine blade steels in low conductivity water containing 35 ppm Cl- (simulating upset steam condensate chemistry) showed a significant dependence on crack size for the same mechanical driving force.
A. Turnbull, S. Zhou
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Effect of crack size on fatigue life
2003NDT evaluation of a steel plate shows that there are cracks present of 3 mm which grew by fatigue to a final crack length under service conditions of 8 mm, determined by fast fracture. Calculate the percentage increase in fatigue life for the plate: (a) if the final crack length is extended by 2 mm to 10 mm through the use of a material of ...
A. Afagh, Y.-W. Mai
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The size of the cohesive zone at a crack tip
Engineering Fracture Mechanics, 1975Abstract Although it is markedly dependent on both the stress at the cohesive zone tip and the displacement at the crack tip, the cohesive zone size at the critical stage of crack extension is shown to be relatively insensitive to the detailed form of the force law describing the non-linearity of material behaviour.
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Estimation of crack density parameter for different distributions of crack size
2013A Idziak, I Stan-Kleczek
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