TY - GEN

T1 - Investigations on fatigue strength of wet welded structural steels

AU - Scheithauer, Thomas

AU - Brätz, Oliver

AU - Henkel, Knuth Michael

AU - Hassel, Thomas

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.

PY - 2023

Y1 - 2023

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.

AB - 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.

KW - fatigue endurance

KW - steel hydraulic engineering

KW - underwater welding

UR - http://www.scopus.com/inward/record.url?scp=85172485663&partnerID=8YFLogxK

U2 - 10.53192/WAC20230244

DO - 10.53192/WAC20230244

M3 - Contribution in non-scientific journal

AN - SCOPUS:85172485663

SP - 44

EP - 49

JO - Welding and Cutting

JF - Welding and Cutting

SN - 1612-3433

ER -