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Determination of Fatigue Crack Paths
International Journal of Bifurcation and Chaos, 1997The complete solution of the problem of a fatigue crack growing from an initial crack includes determination of the crack path. Macroscopic aspects of the main features of the path taken by a growing fatigue crack in a metallic material are reasonably well understood in a qualitative sense.
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International Journal of Mechanical Sciences, 1977
Abstract The failure of a component or specimen due to a fatigue crack growing from a notch is considered. Previous methods of analysis involving stress and strain concentration factors are shown to be inadequate. By defining equivalent cracks in notched and un-notched situations as cracks with equal growth rates, the concept of notch contribution to
R.A. Smith, K.J. Miller
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Abstract The failure of a component or specimen due to a fatigue crack growing from a notch is considered. Previous methods of analysis involving stress and strain concentration factors are shown to be inadequate. By defining equivalent cracks in notched and un-notched situations as cracks with equal growth rates, the concept of notch contribution to
R.A. Smith, K.J. Miller
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On crack-crack interaction and coalescence in fatigue
Engineering Fracture Mechanics, 1982Abstract The effect of crack-crack interaction and coalescence in fatigue was studied for a single pair of cracks analytically and for multi-cracks based on real microstructure variations by means of Monte Carlo simulations. Crack-crack interaction and coalescence lower the mean fatigue lifetime.
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The cracking and fatigue of diamond
Journal of Physics D: Applied Physics, 1977Repeated indentations of a diamond surface by a spherical diamond indenter cause a progressive build-up of surface damage and the eventual appearance of short cracks lying along cleavage planes. These results confirm the existence of fatigue type effects in diamond suggested by other earlier experiments.
J G Bell +3 more
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1997
As discussed in Chapter 2, the traditional approach to estimate the total life of a structural part is to use the S—N diagram (alternating stress, S, versus the total number of cycles to failure, N). This diagram can be constructed by conducting several laboratory tests on standard specimens subjected to low amplitude fluctuating loads simulating the ...
Bahram Farahmand +2 more
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As discussed in Chapter 2, the traditional approach to estimate the total life of a structural part is to use the S—N diagram (alternating stress, S, versus the total number of cycles to failure, N). This diagram can be constructed by conducting several laboratory tests on standard specimens subjected to low amplitude fluctuating loads simulating the ...
Bahram Farahmand +2 more
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Engineering Fracture Mechanics, 1991
Abstract A loading stage for the scanning electron microscope has been used in conjunction with the stereoimaging technique to study fatigue crack closure for a center notched specimen of an aluminum alloy. The results are compared to similar measurements from single edge notched specimens of the same alloy and other materials.
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Abstract A loading stage for the scanning electron microscope has been used in conjunction with the stereoimaging technique to study fatigue crack closure for a center notched specimen of an aluminum alloy. The results are compared to similar measurements from single edge notched specimens of the same alloy and other materials.
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1983
Short fatigue cracks are the linkage of the initiation stage to the long crack growth which can be described by linear elastic fracture mechanics. Because some cracks can initiate then cease to grow, short cracks are important in the definition of fatigue limits.
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Short fatigue cracks are the linkage of the initiation stage to the long crack growth which can be described by linear elastic fracture mechanics. Because some cracks can initiate then cease to grow, short cracks are important in the definition of fatigue limits.
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2018
Readers of this book will have previous knowledge of fracture mechanics, and as such no effort will be made to delve here into fundamental concepts.
Sérgio M. O. Tavares +1 more
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Readers of this book will have previous knowledge of fracture mechanics, and as such no effort will be made to delve here into fundamental concepts.
Sérgio M. O. Tavares +1 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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Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1957
Abstract A discussion is given of the formation of persistent slip bands during cyclic stressing and their development into fatigue cracks. In copper and in aluminium at low temperatures fatigue cracks appear to be formed in this way; at room temperature in aluminium they may form also along grain boundaries.
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Abstract A discussion is given of the formation of persistent slip bands during cyclic stressing and their development into fatigue cracks. In copper and in aluminium at low temperatures fatigue cracks appear to be formed in this way; at room temperature in aluminium they may form also along grain boundaries.
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