ZHAO Yong-xiang, YANG Bing, PENG Jia-chun. Reconstruction of the Probabilistic S-N Curves Under Fatigue Life Following Lognormal Distribution With a Given Confidence[J]. Applied Mathematics and Mechanics, 2007, 28(4): 413-418.
Citation: ZHAO Yong-xiang, YANG Bing, PENG Jia-chun. Reconstruction of the Probabilistic S-N Curves Under Fatigue Life Following Lognormal Distribution With a Given Confidence[J]. Applied Mathematics and Mechanics, 2007, 28(4): 413-418.

Reconstruction of the Probabilistic S-N Curves Under Fatigue Life Following Lognormal Distribution With a Given Confidence

  • Received Date: 2005-12-13
  • Rev Recd Date: 2007-01-30
  • Publish Date: 2007-04-15
  • When the historic probabilistic S-N curves were given under special survival probability and confidence levels and there is no possibility to retest, fatigue reliability analysis at other levels can not be done except for the special levels. Therefore, the widely applied curves are expected. Monte Carlo reconstruction methods of the test data and the curves are investigated under fatigue life following lognormal distribution. To overcome the non-conservative assessment of existent man-made enlarging the sample size up to thousands, a simulation policy is employed to address the true production which the sample size is controlled less than 20 for material specimens, 10 for structural component specimens and the errors matching the statistical parameters less than 5%. Availability and feasibility of the present methods have been indicated by the reconstruction practice of the test data and curves for 60Si2Mn high strength spring steel of railway industry.
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