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  4. Recent developments and future challenges in fatigue strength assessment of welded joints
 
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Recent developments and future challenges in fatigue strength assessment of welded joints

Citation Link: https://doi.org/10.15480/882.1560
Publikationstyp
Journal Article
Date Issued
2014-09
Sprache
English
Author(s)
Fricke, Wolfgang 
Institut
Konstruktion und Festigkeit von Schiffen M-10  
TORE-DOI
10.15480/882.1560
TORE-URI
http://tubdok.tub.tuhh.de/handle/11420/1563
Journal
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science  
Volume
229
Issue
7
Start Page
1224
End Page
1239
Citation
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 7 (229): 1224-1239 (2014)
Publisher DOI
10.1177/0954406214550015
Scopus ID
2-s2.0-84931083735
Fatigue is an important design criterion for welded structures subjected to cyclic loading. Several approaches for fatigue
strength assessment have been developed which are either based onWoehler S–N curves and damage accumulation rule or on crack propagation law. The paper briefly reviews the different approaches, highlighting their advantages and limitations. In this connection, the problematic distinction between crack initiation and propagation phases is discussed, followed by considerations about some parameters which have large influence on the fatigue behaviour of welded joints but are considered differently in the approaches, such as plate thickness and stress gradient effects, multiaxial stress
states, welding-induced distortions and residual stresses. Finally, ways of improving the fatigue behaviour of welded structures, either during design by reducing the stress concentration or during fabrication by improved quality or postweld treatment or else by special material characteristics, are addressed. Emphasis will be placed on recent developments and challenges for the future from a personal perspective of the author.
Subjects
Fatigue
thin structures
welding technology
finite element analysis
fracture mechanics
high cycle fatigue
numerical analysis
DDC Class
620: Ingenieurwissenschaften
Lizenz
http://rightsstatements.org/vocab/InC/1.0/
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