Paper Title:
An Evaluation of Appropriate Probabilistic ­S-­N Curve for the Turbine Blade Steel in the Low Pressure Steam
  Abstract

In order to evaluate the variation of fatigue data of turbine blade steel in low pressure (LP) steam, it is important to estimate probabilistic stress-life (P-S-N) curve to accurately define the probability distribution. In this study, a new procedure was introduced to determine the expression of P-S-N curves. For this purpose, 3-parameter Weibull distribution was found to be the most appropriate among assumed distributions when the probability distributions of the fatigue life were examined by a comparative analysis. Furthermore, the parameter of P-S-N curve was evaluated using various optimization techniques to maximize the correlation coefficient. As a result, the sequential linear program method is used for estimation of P-S-N curve.

  Info
Periodical
Key Engineering Materials (Volumes 297-300)
Edited by
Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
Pages
1751-1757
DOI
10.4028/www.scientific.net/KEM.297-300.1751
Citation
C. S. Kim, J. K. Kim, T. S. Kim, "An Evaluation of Appropriate Probabilistic ­S-­N Curve for the Turbine Blade Steel in the Low Pressure Steam", Key Engineering Materials, Vols. 297-300, pp. 1751-1757, 2005
Online since
November 2005
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$32.00
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