Results 261 to 270 of about 69,126 (307)
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Environmental Fatigue Crack Propagation Interactions
Canadian Metallurgical Quarterly, 1984Abstract Fatigue tests of G41400 Steel in laboratory air exhibited a large change in total life between summer and winter. Test frequency was also found to have a marked effect, with high moisture conditions causing increased sensitivity. The macro and micro fracture modes are shown to vary widely, being dependent upon the environmental conditions.
W.J.D. Shaw, I. Le May
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2014
Fatigue failure is caused by the initiation of micro cracks from small defects in a material, followed by their propagation resulting in the formation of macro cracks, where the magnitude of applied stress may be lower than the yielding stress but the load is repeatedly applied to the material.
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Fatigue failure is caused by the initiation of micro cracks from small defects in a material, followed by their propagation resulting in the formation of macro cracks, where the magnitude of applied stress may be lower than the yielding stress but the load is repeatedly applied to the material.
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Crack propagation during fatigue experiments
International Journal of Fracture Mechanics, 1970In the present paper a very simple phenomenological theory of crack propagation during fatigue experiments is presented. It is shown that an important role is played by work-hardening to explain both the existence of a fatigue limit and the well known deviations from Miner's Rule in the case of tests conducted at varying maximum applied stresses ...
V. Gallina, C. P. Galotto, G. Ruspa
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Fatigue crack propagation in concrete
International Journal of Fracture, 1989Numerous studies have been published on portland cement concrete fracture. But no attempt has been reported to relate the crack propagation rate in concrete to stress intensity factor range.
Yi Wang, Henry J. Petroski
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Modeling Corrosion Fatigue Crack Propagation
CORROSION 2001, 2001Abstract A mathematical model is proposed for modeling the chemistry and the potential distribution in a corrosion fatigue crack, along with the crack propagation rate, in sensitized stainless steel in boiling water reactor (BWR) coolant environments.
G. R. Engelhardt, D. D. Macdonald
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Corrosion Fatigue Crack Propagation
1983There is a cogent argument for the proposition, illustrated in Figure 1, that there is a spectrum of rate-determining steps in environmentally-controlled subcritical crack propagation encompassed by the phenomena ‘corrosion-fatigue’ (C.F.), ‘hydrogen-embrittlement’ (HE) and’ stress-corrosion cracking’ (SCC).
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A fatigue crack propagation model
Engineering Fracture Mechanics, 1984Abstract A model for fatigue crack propagation has been developed which incorporates mechanical, cyclic and fatigue properties as well as a length parameter. The latter can be associated with the microstructure of the material. The fatigue failure criterion is based on a measure of the dissipated plastic strain energy.
D. Kujawski, F. Ellyin
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Alloys and Fatigue Crack Propagation
2018Aluminium alloys were for many decades the material of choice for aircraft structures. Although this prominence no longer exists, these alloys still represent a substantial part of the aircraft. This section briefly reviews the fatigue crack propagation behaviour of typical Al alloys, including Al-Li alloys of interest because of their low weight and ...
Sérgio M. O. Tavares +1 more
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Anisotropy of Fatigue Crack Propagation
Journal of Basic Engineering, 1971The anisotropy of fatigue crack propagation in hot rolled steel plate was studied for three orientations, viz., crack arrester, crack divider, and short transverse. The dependence of crack growth rate on stress intensity factor was shown to be sensitive to the microconstituents present and their orientation relative to the fracture plane and direction.
F. A. Heiser, R. W. Hertzberg
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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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