TY - GEN

T1 - Automatisierte Schweißnahtnachbehandlung für Offshore-Windenergieanlagen

AU - Dänekas, Christian

AU - Heikebrügge, Steffen

AU - Kulikowski, Jan

AU - Heide, Klaas Maximilian

AU - Schaumann, Peter

AU - Breidenstein, Bernd

AU - Bergmann, Benjamin

N1 - Funding Information: Die IGF-Vorhaben 21496 N „Ermüdungsfestigkeit von Stumpfnahtstößen hochfester Offshore-Feinkornbaustähle mit und ohne Nachbehandlung für den Bau von Offshore-Windenergieanlagen“ (Teilprojekt des FOSTA-Forschungsverbunds HOCHFEST) und 20626 N „Erhöhte Ermüdungsfestigkeit von Schweißverbindungen in der Windenergie durch Festwalzen“ der Forschungsvereinigung Stahlanwendung e. V. (FOSTA) werden über die AiF im Rahmen des Programms zur Förderung der industriellen Gemeinschaftsforschung (IGF) vom Bundesministerium für Wirtschaft und Klimaschutz aufgrund eines Beschlusses des Deutschen Bundestags gefördert. Die Vorhaben werden an der Leibniz Universität Hannover durch das Institut für Stahlbau und das Institut für Fertigungstechnik und Werkzeugmaschinen durchgeführt.

PY - 2022/10/11

Y1 - 2022/10/11

N2 - Automated post weld treatment for offshore wind turbines. A more economical and resource-saving construction of offshore wind energy converters (OWEC) is necessary in order to implement climate policy objectives. The increase of the fatigue resistance by using high-strength steels and by applying post-weld treatment methods offers great potential for reducing the use of materials and costs for monopiles. Specifically, in the automated OWEC manufacturing chain, automated processes such as deep rolling are a suitable option. Deep rolling is an established process in mechanical engineering for increasing the wear and fatigue resistance of metallic components. This paper presents results of deep rolling as a new post treatment method to increase the fatigue strength of welds. The surface and subsurface zone properties of submerged arc welded butt joints made of a structural steel grade S355MLO before and after deep rolling are shown. In order to quantify the influence of deep rolling on the weld geometry, measurements of a laser line sensor are presented. Finally, the results of fatigue tests are discussed, which show the great potential of the deep rolling process as a post weld treatment method.

AB - Automated post weld treatment for offshore wind turbines. A more economical and resource-saving construction of offshore wind energy converters (OWEC) is necessary in order to implement climate policy objectives. The increase of the fatigue resistance by using high-strength steels and by applying post-weld treatment methods offers great potential for reducing the use of materials and costs for monopiles. Specifically, in the automated OWEC manufacturing chain, automated processes such as deep rolling are a suitable option. Deep rolling is an established process in mechanical engineering for increasing the wear and fatigue resistance of metallic components. This paper presents results of deep rolling as a new post treatment method to increase the fatigue strength of welds. The surface and subsurface zone properties of submerged arc welded butt joints made of a structural steel grade S355MLO before and after deep rolling are shown. In order to quantify the influence of deep rolling on the weld geometry, measurements of a laser line sensor are presented. Finally, the results of fatigue tests are discussed, which show the great potential of the deep rolling process as a post weld treatment method.

KW - deep rolling

KW - Experiments

KW - fatigue

KW - laser line sensor

KW - materials

KW - post weld treatment

KW - residual stresses

KW - stress concentration

UR - http://www.scopus.com/inward/record.url?scp=85139686915&partnerID=8YFLogxK

U2 - 10.1002/stab.202200050

DO - 10.1002/stab.202200050

M3 - Beitrag in Publikumszeitung/-zeitschrift

AN - SCOPUS:85139686915

VL - 91

SP - 683

EP - 695

JO - STAHLBAU

JF - STAHLBAU

SN - 0038-9145

ER -