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Fatigue Characteristic of Linear Friction Welded Ti-6Al-4V Joints Read chapter Read first chapter

2020 | OriginalPaper | Chapter

Weibull or Log-Normal Distribution to Characterize Fatigue Life Scatter – Which Is More Suitable?

Author : Abraham Brot

Published in: ICAF 2019 – Structural Integrity in the Age of Additive Manufacturing

Publisher: Springer International Publishing

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Abstract

This paper is a follow-up to the Plantema Memorial Lecture that was presented by the author at the ICAF 2017 Symposium at Nagoya, Japan (Brot 2017). It will be shown in this paper, that there may be very large differences between the Weibull and Log-Normal statistical distributions of fatigue test results. These large differences have been confirmed using special software, that is commercially available. Fatigue test data from several sources have been combined to result in an 86-specimen database of fatigue life results. Analysis of these test results, using the software indicated above, determined that the Weibull distribution gave much more suitable results than the Log-Normal distribution.

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Literature
Abernethy, R.B.: The New Weibull Handbook, 5th edn (2004)
Brot, A.: Plantema Memorial Lecture. In: Proceedings of the 27th Symposium of the International Committee on Aeronautical Fatigue and Structural Integrity (ICAF), Nagoya, Japan (2017)
Metallic Material Properties Development and Standardization Manual (MMPDS): Version 9 (2014)
Schijve, J.: Fatigue of Structures and Materials, 2nd edn. Springer (2009)
SuperSMITH Software: Release 5.0-CY, developed by Fulton Findings (2014)
Metadata
Title
Weibull or Log-Normal Distribution to Characterize Fatigue Life Scatter – Which Is More Suitable?
Author
Abraham Brot
Copyright Year
2020
Book
ICAF 2019 – Structural Integrity in the Age of Additive Manufacturing

Print ISBN: 978-3-030-21502-6

Electronic ISBN: 978-3-030-21503-3

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-21503-3_44

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