Results 111 to 120 of about 63,924 (165)

The Rate of Growth of Fatigue Cracks

Journal of Applied Mechanics, 1936
Abstract The author discusses the resistance of metal to the propagation of cracks, and points out that in the accepted method of fatigue testing the results are not conclusive because there is no distinction between (1) the load and the number of repeated stresses required to start cracks and (2) the load and the number of reversals ...
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Variability in Fatigue Crack Growth Rate Testing

Journal of Testing and Evaluation, 1975
Abstract To provide the data necessary to develop a recommended practice for fatigue crack growth rate testing, an extensive interlaboratory (round robin) program was conducted and the variability and bias associated with the current state of the art of fatigue crack growth rate testing was determined.
WG Clark, SJ Hudak
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Fatigue crack growth rate of zirconia ceramics

Journal of the European Ceramic Society, 1997
Abstract This paper investigates the fatigue crack growth behaviours of 3 mol% Y2O3 partially stabilized zirconia (Y-PSZ). Stable fatigue crack growth rate under tension-tension loading was measured from the indentation flaw under three-point bending. The influence of stress ratio on the fatigue crack growth rate was also studied.
Jiun-Ren Hwang, Jiunn-Long Shih, Ming-Chang Jeng   +2 more
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The Analysis of Fatigue Crack Growth Rate Data

1979
The analytical variables associated with the characterization of fatigue crack growth rate performance are discussed and the influence of these variables on predicted cyclic life is illustrated. It is shown that the analytical techniques chosen to process laboratory test results and to develop upper-bound design information can have a significant ...
W. G. Clark, S. J. Hudak
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Fatigue crack path manipulation for crack growth rate measurement

Engineering Fracture Mechanics, 2016
Abstract It is accepted that fatigue crack paths in metals that display confined slip, such as high strength aluminium alloys, are responsive to loading direction and local microstructural orientation. It is less well recognised that crack paths in these alloys are also responsive to the loading history since certain loading sequences can produce ...
S. Barter, P. White, M. Burchill
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Crack growth rate and cracking velocity in fatigue for a class of ceramics

Theoretical and Applied Fracture Mechanics, 1999
Abstract Fatigue crack growth rate data and cracking velocity data are studied for a class of ceramics including SiC, TiB2, Si3N4, ZrO2 and Al2O3. Both sine and square wave cyclic loading are combined such that the data could be converted to cracking velocity for a given frequency of cyclic load.
X.L Zheng, J.H Yan, K Zhao
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Frequency Dependence of Fatigue and Corrosion Fatigue Crack Growth Rate

2010 8th International Pipeline Conference, Volume 1, 2010
Corrosion fatigue and fatigue crack growth in air tests were comparatively conducted on an X52 pipelines steel. Fatigue crack growth rates in air were lower than corrosion fatigue crack growth rates due to the absence of hydrogen and mechanical dormancy arisen from low temperature creep at low cyclic frequencies.
Mohammad Hassan Marvasti, Weixing Chen, Richard Kania, Robert Worthingham, Greg Van Boven   +4 more
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The crack-tip mechanics and growth rates of small fatigue cracks in ASTROLOY

Metallurgical and Materials Transactions A, 1995
The micromechanics of naturally initiated small fatigue cracks in coarse- and fine-grained nickelbased ASTROLOY have been studied at ambient and elevated temperature using a cyclic loading stage for the scanning electron microscope (SEM) and the stereoimaging technique.
D. L. Davidson, S. J. Hudak
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ON DIMENSIONAL ANALYSIS OF FATIGUE CRACK GROWTH RATE AND GEOMETRICAL SIMILITUDE OF CRACKS

Fatigue & Fracture of Engineering Materials & Structures, 1987
AbstractDimensional analysis has been applied to the fatigue failure of a material. The growth rate of cracks propagating within the limitations of LEFM can be described unequivocably by ΔK, as for example, in the Paris law. However, in the more general case, when LEFM conditions are violated or when the crack is short, an extra term, relating plastic ...
A. Navarro, E. R. de los Rios
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Variation of crack opening-load diagram with fatigue crack growth rate

Materials Science and Engineering, 1977
Abstract This study is concerned with the fatigue threshold of the aluminium alloy AU2GN. By analysis of load-displacement curves, the authors have determined the crack closure load (Pop) and the elastic response of crack opening (Pel). Thus, it has been shown that at the fatigue threshold level, the crack is open elastically.
C Robin, S Dominiak, G Pluvinage
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