Automatisierte Schweißnahtnachbehandlung für Offshore-Windenergieanlagen

authored by

Christian Dänekas, Steffen Heikebrügge, Jan Kulikowski, Klaas Maximilian Heide, Peter Schaumann, Bernd Breidenstein, Benjamin Bergmann

Abstract

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.

Organisation(s)

Institute of Steel Construction
Institute of Production Engineering and Machine Tools

Type

Contribution in non-scientific journal

Journal

STAHLBAU

Volume

91

Pages

683-695

No. of pages

13

ISSN

0038-9145

Publication date

11.10.2022

Publication status

Published

ASJC Scopus subject areas

Civil and Structural Engineering, Building and Construction, Mechanics of Materials, Mechanical Engineering, Metals and Alloys

Sustainable Development Goals

SDG 13 - Climate Action

Electronic version(s)

https://doi.org/10.1002/stab.202200050 (Access: Closed)