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Fatigue strength of fillet-welded joints at subzero temperatures
Citation Link: https://doi.org/10.15480/882.2648
Publikationstyp
Journal Article
Date Issued
2020-02-01
Sprache
English
Author(s)
TORE-DOI
TORE-URI
Volume
43
Issue
2
Start Page
403
End Page
416
Citation
Fatigue and Fracture of Engineering Materials and Structures 2 (43) : 403-416 (2020)
Publisher DOI
Scopus ID
Ships and offshore structures may be operated in areas with seasonal freezing temperatures and extreme environmental conditions. While current standards state that attention should be given to the validity of fatigue design curves at subzero temperatures, studies on fatigue strength of structural steel at subzero temperatures are scarce. This study addresses the issue by analysing the fatigue strength of welded steel joints under subzero temperatures. Although critical weld details in large welded structures are mostly fillet-welded joints, most published data are based on fatigue crack growth rate specimens cut out of butt-welded joints. This study analyses fillet-welded specimens at −20°C and −50°C against controls at room temperature. Significantly higher fatigue strength was measured in comparison to estimates based on international standards and data from design codes even at temperatures far below the allowed service temperature based on fracture toughness results.
Subjects
ductile-brittle transition
fatigue testing
high-strength steel
low temperatures
temperature dependence of fatigue curves
weldment fatigue
DDC Class
600: Technik
620: Ingenieurwissenschaften
More Funding Information
German Research Association
Donors' Association for the Promotion of Sciences and Humanities in Germany
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