Research Article
Dec 1980
Linear Model in Probabilistic Fatigue Design
Authors: Paul H. Wirsching, AM.ASCE, and Steve HsiehAuthor Affiliations
Publication: Journal of the Engineering Mechanics Division
Volume 106, Issue 6
Abstract
The conventional method of linear model analysis is used to analyze data on correlated variables (Y and X). But the methods used to define a design curve seldom account for statistical uncertainty in the estimates of the parameters a and b in the linear relationship, Y=a + bX. The independent variable is X. Unconservative design result. Using S-N fatigue data analysis as an example, a method of establishing a design curve, based on predicition intervals, was derived. This method was also used to provide the necessary statistical information for probabilistic design format. To account for the statistical uncertainty in estimates of a and b, the simple standard deviation of Y given X is expanded.
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Published In
Journal of the Engineering Mechanics Division
Volume 106 • Issue 6 • December 1980
Pages: 1265 - 1278
Copyright
© 1980 American Society of Civil Engineers.
History
Published in print: Dec 1980
Published online: Feb 3, 2021
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Authors
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Paul H. Wirsching, AM.ASCE
Assoc. Prof., Aerospace and Mech. Engr., Univ. of Arizona, Tucson, Ariz.
Steve Hsieh
Grad. Asst., Aerospace and Mech. Engr., Univ. of Tucson, Tucson, Ariz.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.