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Use of the four parameter weibull function for fitting fatigue and compliance calibration data

✍ Scribed by Fraser Smith; David W. Hoeppner

Publisher: Elsevier Science
Year: 1990
Tongue: English
Weight: 946 KB
Volume: 36
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(90)90107-r

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✦ Synopsis

The use of the four parameter Weibull function for fitting compliance calibration and fatigue crack growth data is proposed and validated. The fitting procedure is explained and its shortcomings identified in detail. The most serious problem of failing consistently to fit low end data is rectified through the use of an additional algorithm. Since the function is easily differentiated, it is convenient to use for obtaining a stress intensity calibration from a compliance ~libration, and crack growth rate data from a crack length vs number of cycles plot.

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