Investigations on fatigue strength of wet welded structural steels

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External Research Organisations

  • University of Rostock
  • Fraunhofer-Institut für Großstrukturen in der Produktionstechnik IGP
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Details

Original languageEnglish
Pages44-49
Number of pages6
Issue number2
JournalWelding and Cutting
Publication statusPublished - 2023

Abstract

The fatigue strength of underwater wet welded constructional details was investigated within this research project. Wet hyperbaric shielded metal arc welding (SMAW) is a widely established repair technique and an approved process in steel hydraulics construction. To date, only little research has been done on the fatigue strength of wet SMAW welds for typical steel grades. To address this issue, weld samples were made fully mechanized in a hyper-baric chamber to experimentally simulate water depth dependent ambient conditions. The resulting weld quality was analysed and the fatigue behav-iour in the high cycle fatigue range was investigated by constant amplitude SN testing. This was followed by a statistical evaluation of the characteristic fatigue strength according to Eurocode 3/EN 1993-1-9.

Keywords

    fatigue endurance, steel hydraulic engineering, underwater welding

ASJC Scopus subject areas

Cite this

Investigations on fatigue strength of wet welded structural steels. / Scheithauer, Thomas; Brätz, Oliver; Henkel, Knuth Michael et al.
In: Welding and Cutting, No. 2, 2023, p. 44-49.

Research output: Contribution to specialist publicationContribution in non-scientific journalTransfer

Scheithauer, T, Brätz, O, Henkel, KM & Hassel, T 2023, 'Investigations on fatigue strength of wet welded structural steels' Welding and Cutting, no. 2, pp. 44-49. https://doi.org/10.53192/WAC20230244
Scheithauer, T., Brätz, O., Henkel, K. M., & Hassel, T. (2023). Investigations on fatigue strength of wet welded structural steels. Welding and Cutting, (2), 44-49. https://doi.org/10.53192/WAC20230244
Scheithauer T, Brätz O, Henkel KM, Hassel T. Investigations on fatigue strength of wet welded structural steels. Welding and Cutting. 2023;(2):44-49. doi: 10.53192/WAC20230244
Scheithauer, Thomas ; Brätz, Oliver ; Henkel, Knuth Michael et al. / Investigations on fatigue strength of wet welded structural steels. In: Welding and Cutting. 2023 ; No. 2. pp. 44-49.
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N1 - Funding Information: The IGF-Project No. 20.948 B/DVS-No. V4.3222 of the research asso-ciation „Forschungsvereinigung Schweißen und verwandte Verfahren e. V. des DVS, Aachener Str. 172, 40223 Düsseldorf“ was, on the basis of a resolution of the German Bundestag, promoted by the German Ministry of Economic Affairs and Climate Action via the Federation of Industrial Research Associations (AiF) within the framework of the programme for the promotion of joint industrial research (IGF). This joint project was carried out by the Institut für Werkstoffkunde (Materials Science) at Leibniz Universität Hannover and the Fraunhofer Institute for Large Structures in Production Engineering IGP, Rostock. We would like to thank the above-mentioned institutions and all members of the project-accompany-ing committee for their sponsorship and support of the research project.

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N2 - The fatigue strength of underwater wet welded constructional details was investigated within this research project. Wet hyperbaric shielded metal arc welding (SMAW) is a widely established repair technique and an approved process in steel hydraulics construction. To date, only little research has been done on the fatigue strength of wet SMAW welds for typical steel grades. To address this issue, weld samples were made fully mechanized in a hyper-baric chamber to experimentally simulate water depth dependent ambient conditions. The resulting weld quality was analysed and the fatigue behav-iour in the high cycle fatigue range was investigated by constant amplitude SN testing. This was followed by a statistical evaluation of the characteristic fatigue strength according to Eurocode 3/EN 1993-1-9.

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