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A model for fatigue crack propagation
Engineering Fracture Mechanics, 1975Abstract A model for fatigue crack propagation is presented which incorporates low cycle fatigue, mechanical properties and a microstructurally-associated process zone. Comparison of the model to published date for 4340 (hard and soft), a series of TRIP steels, Ti-6A1-4V, 2024-T6 and 300 grade maraging steel shows good agreement.
Stephen D. Antolovich +2 more
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Fatigue Crack Propagation in Metals
Nature, 1966PEARSON1 has recently discussed the problem of the rate of growth of a fatigue crack. He tabulated values of the stress intensity factor K necessary to cause a crack to grow under a repeated tensile loading cycle at a certain velocity in a number of alloys and showed that the ratio of K to the Young's modulus E of the material was roughly constant. The
N. E. FROST, J. R. DIXON
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Fatigue crack propagation in polyacetal
Journal of Materials Science, 1978The fatigue crack propagation characteristics of a typical commercial homopolymer and copolymer polyacetal were determined. These materials were found to be the most fatigue resistant plastics examined to date, thus confirming the generally high fatigue resistance of all crystalline polymers.
R. W. Hertzberg +2 more
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1982
The determination of the fatigue crack propagation curve is an essential part of the fracture mechanics design approach. Residual strength calculation procedures have obvious shortcomings, but the prediction of fatigue crack propagation characteristics is even less accurate, despite the vast amount of research that has been done on this subject.
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The determination of the fatigue crack propagation curve is an essential part of the fracture mechanics design approach. Residual strength calculation procedures have obvious shortcomings, but the prediction of fatigue crack propagation characteristics is even less accurate, despite the vast amount of research that has been done on this subject.
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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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Propagation of a fatigue crack in a weld
Strength of Materials, 19761. The dependence of the growth rate of a fatigue crack on the stress intensity coefficient at the tip of the crack is described by an exponential function of the da/dN=CΔKn type for all zones of a welded joint. For a given applied stress and realizable values of ΔK the index n in this function has a constant value, differing for each particular ...
Yu. A. Novikov +2 more
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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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Fatigue Crack Propagation Threshold
Journal of Testing and Evaluation, 1989Abstract Service-type fatigue loading conditions are critically analyzed with respect to their relevance for a fatigue crack growth threshold. It was found that a threshold should be experimentally determined as a function of the monotonic-plastic zone size (i.e., as a function of Kmax). For each Kmax the cyclic-plastic zone size depends
G Marci, DE Castro, V Bachmann
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Calculation of fatigue crack propagation
Journal of Machinery Manufacture and Reliability, 2007A definition of kinetic diagrams of fatigue crack propagation in aluminum alloys for various loading cycle asymmetries is considered. Calculations and experimental measurements of crack propagation time for upper and lower wing skins are presented; the linear model and the Willenborg model were used.
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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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