Estimation for Fatigue Behavior of Notched Plate with Mean Stress Effect

Chihiro Ogata; Kenji Shojima; Keiji Yanase

doi:10.4028/www.scientific.net/MSF.750.256

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HomeMaterials Science ForumMaterials Science Forum Vol. 750Estimation for Fatigue Behavior of Notched Plate...

Estimation for Fatigue Behavior of Notched Plate with Mean Stress Effect

Abstract:

In this paper, McEvily’s fatigue crack growth equation is modified and newly combined with the modified Goodman equation to estimate the fatigue strength with arbitrary mean stress, σ_m. Firstly, based on McEvily’s equation, the threshold stresses for fatigue crack initiation and propagation with stress ratio R = –1 or σ_m = 0 are predicted with reasonable accuracy. Then, a simple calculation is presented to predict the fatigue strength with arbitrary mean stress. The adequacy of present method is examined based on the comparison with the available experimental data in the literature.

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Periodical:

Materials Science Forum (Volume 750)

Pages:

256-259

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.750.256

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Online since:

March 2013

Authors:

Chihiro Ogata, Kenji Shojima, Keiji Yanase

Keywords:

Fatigue Limit, Mean Stress, Modified LEFM, Notch Effect

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References

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