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Experimental investigation on the influence of welding residual stresses on fatigue for two different weld geometries
Citation Link: https://doi.org/10.15480/882.3008
Publikationstyp
Journal Article
Date Issued
2020-08-31
Sprache
English
Author(s)
TORE-DOI
TORE-URI
Volume
43
Issue
11
Start Page
2715
End Page
2730
Citation
Fatigue and Fracture of Engineering Materials and Structures 11 (43): 2715-2730 (2020-11-01)
Publisher DOI
Scopus ID
Publisher
Wiley-Blackwell
Fatigue & Fracture of Engineering Materials & Structures published by John Wiley & Sons Ltd Fatigue tests on welded small-scale specimens often do not show a distinct residual stress influence. An exception is longitudinal stiffeners, which are therefore frequently used to study the influence of welding residual stresses on fatigue. The results are not directly transferable to other weld geometries because the residual stress distribution depends on the weld geometries. In the presented investigation, fatigue tests on multilayer K-butt weld and longitudinal stiffener specimens were performed. The tests were carried out in the as-welded and stress-relieved conditions at different load ratios. Initiation of macroscopic cracks was detected using digital image correlation. This allowed determining the influence of welding residual stresses on the initiation of macroscopic cracks, crack propagation and total fatigue life for both investigated weld geometries.
Subjects
crack propagation
digital image correlation
initiation of macroscopic cracks
longitudinal stiffener
multilayer K-butt weld
stress ratio
DDC Class
600: Technik
More Funding Information
The presented research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – EH 485/4-1.
Publication version
publishedVersion
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