Measurement on Fatigue Cracking Thresholds of the Cast Steel for Chinese Railway Rolling Wagon Bogie Frames

Abstract:

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Measurement on fatigue cracking thresholds is investigated to the grade B cast steel for China railway rolling wagon bogie frames. Compact tensional specimens are fatigued under a continuous decreasing loading mode for present study. Results reveal that the minimum test values have different crack growth rates without meeting the code-based rate requirement. Therefore, the test results can not be directly used for measuring the thresholds. A probabilistic modeling in the form of a non-linear law is developed for reflecting the scattered test data. The thresholds at specified reliability levels are then derived in meeting the threshold definition with a specified growth rate. The measurement for the present material has verified the availability of the present modeling.

Info:

Periodical:

Advanced Materials Research (Volumes 118-120)

Edited by:

L.Y. Xie, M.N. James, Y.X. Zhao and W.X. Qian

Pages:

111-115

DOI:

10.4028/www.scientific.net/AMR.118-120.111

Citation:

H. B. Hu and Y. X. Zhao, "Measurement on Fatigue Cracking Thresholds of the Cast Steel for Chinese Railway Rolling Wagon Bogie Frames", Advanced Materials Research, Vols. 118-120, pp. 111-115, 2010

Online since:

June 2010

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Price:

$35.00

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