Paper Title:
Reconstruction of the Material Probabilistic S-N Relations under Fatigue Life Following Lognormal Distribution I-without Given Confidence
  Abstract

Fatigue reliability theory has recently verified that the sampling size related effect should be taken into account by confidence (C). However, most of the historic probabilistic S-N curves are given to only consider the scattered regularity effect by survival probability (P). Therefore, a reconstruction method of the historic curves is investigated to consider the sampling size effect. An effort is made on addressing the true production that the sampling size is less than 20 for material specimens and 10 for structural component specimens. A Monte Carlo simulation approach is first established to reconstruct the test S-N data. And then, the P-C-S-N curves are reconstructed with a general maximum likelihood principle. The practice for 40Cr steel has clearly indicated that, beyond all doubt, the reconstructed curves has overcome the shortages of the historic data.

  Info
Periodical
Key Engineering Materials (Volumes 324-325)
Edited by
M.H. Aliabadi, Qingfen Li, Li Li and F.-G. Buchholz
Pages
1043-1046
DOI
10.4028/www.scientific.net/KEM.324-325.1043
Citation
Y. X. Zhao, B. Yang, W. H. Zhang, "Reconstruction of the Material Probabilistic S-N Relations under Fatigue Life Following Lognormal Distribution I-without Given Confidence ", Key Engineering Materials, Vols. 324-325, pp. 1043-1046, 2006
Online since
November 2006
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Price
$32.00
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