Fatigue Reliability Curves for China Railway Grade B Cast Steel Wheel

H.Q. Liang; Yong Xiang Zhao; Y. Li

doi:10.4028/www.scientific.net/KEM.480-481.352

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 480-481Fatigue Reliability Curves for China Railway Grade...

Fatigue Reliability Curves for China Railway Grade B Cast Steel Wheel

Abstract:

Four grouped rectangle specimens with thirty four samples, plus eighteen samples for fatigue limits, are tested for constructing the fatigue reliability curves of China grade B cast steel wheel. It reveals that fatigue cracks commonly initiated from the surface weakest phases and grew with typical fatigue striations and sub-cracks perpendicular to the growth direction. Cyclic plastic seems to be strengthened as cyclic stressing level increasing. Fatigue reliability curves are constructed on a consideration of addressing the real super long life. They are evaluated by a concurrent probability extrapolation method. And the measured curves verified that appropriate description has been reached on the test data.

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Key Engineering Materials (Volumes 480-481)

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352-356

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.480-481.352

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Online since:

June 2011

Authors:

H.Q. Liang, Yong Xiang Zhao, Y. Li

Keywords:

Fatigue Reliability Curves, Grade B Cast Steel, Railway, Wheel

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