Options
Development of probabilistic fracture mechanics method for fatigue life prediction based on EIFS concept
Date Issued
2017-06
Abstract
A problem with fracture mechanics (FM) based fatigue analysis is that reliable information on initial crack/flaw size is often unavailable. Also, FM method cannot be applied directly to welded joints with relatively small initial flaws and long crack initiation life. This paper proposes a novel probabilistic FM method based on the equivalent initial flaw size (EIFS) concept. The initial crack size is substituted with EIFS to take both the crack initiation and propagation life into account. Three methods are tested to obtain mean value of EIFS: calibrating to S-N curve, Kitagawa-Takahashi (KT) diagram and fitting to test data. The obtained EIFSs are evaluated by comparing the predicted fatigue lives and crack evolutions with S-N curve and test crack evolution data. The suggested procedure is to derive the mean value of EIFS from S-N curve and the coefficient of variation from KT diagram.
External Notes
This EU Horizon 2020 funded item has been permanently embargoed at the request of the publisher. Please contact the author for access.
Sponsorship
European Commission Horizon 2020
Other Sponsorship
http://www.trussitn.eu
Type of Material
Conference Publication
Publisher
ASME
Copyright (Published Version)
2017 ASME
Language
English
Status of Item
Peer reviewed
Part of
ASME
Conference Details
36th International Conference on Ocean, Offshore and Arctic Engineering (OMAE 2017), Trondheim, Norway, June, 2017
This item is made available under a Creative Commons License
Owning collection
Views
1701
Last Month
3
3
Acquisition Date
Mar 28, 2024
Mar 28, 2024
Downloads
138
Acquisition Date
Mar 28, 2024
Mar 28, 2024