✦ LIBER ✦

A weibull analysis of fatigue-crack propagation data from a nuclear pressure vessel steel

✍ Scribed by G.C. Salivar; D.W. Hoeppner

Publisher: Elsevier Science
Year: 1979
Tongue: English
Weight: 200 KB
Volume: 12
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(79)90110-3

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✦ Synopsis

Techniques of curve fitting, based upon an equation in the form of the four parameter Weibull Survivorship Function, are presented for the reduction of fatigue-crack propagation rate data obtained from a nuclear pressure vessel steel. The importance of data in the near threshold and the high crack propagation rate regions of the DA/DN vs AK curve, as it relates to the curve fit, is demonstrated with respect to a change in the four parameters of the Weibull function.

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✍ R.K. Reeves; D.W. Hoeppner 📂 Article 📅 1978 🏛 Elsevier Science 🌐 English ⚖ 436 KB

A four parameter Weibull survivorship equation is applied in the analysis of fatigue-crack growth data of two microstructures of a 0.40]0.50 carbon steel. A new method of optimizing variables in conjunction with standard linear regression analysis is discussed in terms of fitting curves to crack gro