Results 241 to 250 of about 1,354,072 (296)
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Comparing dynamic crack initiation and crack arrest
International Journal of Pressure Vessels and Piping, 1989Abstract The temperature dependences of dynamic crack initiation and crack-arrest toughnesses are compared and found to differ significantly. It is suggested that the reason for this difference arises from the differences in crack morphology associated with the two phenomena.
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, 2019
In the uniaxial compression test of rock containing pre-existing flaws, the flaws are generally open, and the corresponding theoretical calculations are mostly based on the closed flaws.
Hang Lin +4 more
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In the uniaxial compression test of rock containing pre-existing flaws, the flaws are generally open, and the corresponding theoretical calculations are mostly based on the closed flaws.
Hang Lin +4 more
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Micromechanisms of Crack Initiation and Crack Propagation
1985After summarizing fracture mechanics parameters the paper introduces micromechanical models of cleavage fracture. It is shown that cleavage can be interpreted in terms of the local tensile stress required to propagate micro-cracks. Methods to determine the microscopic cleavage stress are presented.
W. Dahl, D. Dormagen
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, 2020
Successive double scratch tests under the critical load of median crack initiation were conducted to investigate the crack behaviors under the influence of interaction between the arranged grits during grit-arranged grinding BK7 glass.
Junyuan Feng +5 more
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Successive double scratch tests under the critical load of median crack initiation were conducted to investigate the crack behaviors under the influence of interaction between the arranged grits during grit-arranged grinding BK7 glass.
Junyuan Feng +5 more
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Effect of crack closure on crack initiation parameters
Engineering Fracture Mechanics, 1986Young’s modulus shear modulus elastic constant : 3 -4y plane strain ; 3 -r/l + y plane stress force per unit thickness of plate open end mode I stress intensity factor open end mode II stress intensity factor Poisson’s ratio applied uniform tension, 2p/k + 1 distance of concentrated force from centre line of crack maximum normal stress minimum strain ...
R.S. Alwar, S. Thiagarajan
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On crack-tip cooling during dynamic crack initiation
International Journal of Solids and Structures, 2001Abstract This paper presents a hybrid experimental–numerical treatment of the transient thermoelastic effects around a crack tip, subjected to a dynamic loading. A simple numerical procedure was devised to calculate the transient crack-tip temperature field, in a “one-way” coupled approach.
Bougaut, O., Rittel, D.
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Journal of Materials Science & Technology, 2019
GH4169 at 650 °C in atmosphere was investigated by using single edge notch tensile specimens. The number of main cracks and crack initiation mechanisms at the notch surface strongly depended on the grain size. The crack initiation life accounted for more
Zhu Xumin +7 more
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GH4169 at 650 °C in atmosphere was investigated by using single edge notch tensile specimens. The number of main cracks and crack initiation mechanisms at the notch surface strongly depended on the grain size. The crack initiation life accounted for more
Zhu Xumin +7 more
semanticscholar +1 more source
Theoretical and applied fracture mechanics (Print), 2019
Rigid polyurethane (PUR) foams can be subjected to complex loading conditions when they are utilized as a structural material in engineering components. Under the influence of tensile or shear loads, the crack growth is one of the major failure modes for
M. Aliha +4 more
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Rigid polyurethane (PUR) foams can be subjected to complex loading conditions when they are utilized as a structural material in engineering components. Under the influence of tensile or shear loads, the crack growth is one of the major failure modes for
M. Aliha +4 more
semanticscholar +1 more source
Crack kinking from an initially closed interface crack
Comptes Rendus de l'Académie des Sciences - Series IIB - Mechanics-Physics-Astronomy, 1999zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Leblond, Jean-Baptiste, Frelat, Joël
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1994
Fretting fatigue is particularly damaging because it can affect both the initiation and propagation phases of crack life. In the preceding chapter its effect on propagation was discussed and it was shown that in this phase of the crack’s life the problem can be reduced to that of analysing cracks growing in a particularly severe and complex stress ...
D. A. Hills, D. Nowell
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Fretting fatigue is particularly damaging because it can affect both the initiation and propagation phases of crack life. In the preceding chapter its effect on propagation was discussed and it was shown that in this phase of the crack’s life the problem can be reduced to that of analysing cracks growing in a particularly severe and complex stress ...
D. A. Hills, D. Nowell
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