Application of local approaches to the assessment of fatigue test results obtained for welded joints at sub-zero temperatures

Publikationstyp
Journal Article
Publikationsdatum
2020-09
Sprache
English
Author
Braun, Moritz orcid-logo
Milaković, Aleksandar-Saša 
Renken, Finn 
Fricke, Wolfgang 
Ehlers, Sören 
Institut
Konstruktion und Festigkeit von Schiffen M-10 
TORE-URI
http://hdl.handle.net/11420/6175
Enthalten in
International journal of fatigue 
Volume
138
Article Number
105672
Citation
International Journal of Fatigue (138): 105672 (2020-09)
Publisher DOI
10.1016/j.ijfatigue.2020.105672
Scopus ID
2-s2.0-85084333252
Several studies have found significant increase in the fatigue strength of welded joints of structural steels at sub-zero temperatures. This study addresses the research by investigating the applicability of local fatigue assessment methods to welded joints exposed to sub-zero temperatures. For this purpose, fatigue test results of two fillet weld details with weld toe and weld root failure are evaluated at a range of temperatures using a variety of structural hot-spot and notch stress approaches, then are compared to the nominal stress approach. Large differences in prediction accuracy are found for the analysed assessment methods and both failure locations.
Schlagworte
Effective notch stress
Fatigue assessment methods
Finite elements
Low temperature fatigue
Structural hot spot stress