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Aging and fatigue - combined testing of welded joints under offshore conditions

: Collmann, Mareike; Wefer, Maik

International Society of Offshore and Polar Engineers:
Twenty-seventh International Ocean and Polar Engineering Conference 2017. Proceedings : San Francisco, California, June 25-30, 2017, CD-ROM
Cupertino, Calif.: ISOPE, 2017
ISBN: 978-1-880653-97-5
7 pp.
International Ocean and Polar Engineering Conference <27, 2017, San Francisco/Calif.>
Symposia "Asset Integrity and Corrosion Management" <2017, San Francisco/Calif.>
Bundesministerium für Wirtschaft und Technologie BMWi
0325516; DegradO
Degradation von Offshore-Windenergieanlagen
Conference Paper
Fraunhofer IWES ()

This paper focuses on the fatigue testing of welded joints under marine conditions. A special testing facility has been developed which combines a 1-MN-servo hydraulic testing machine with a climatic chamber. For the first time, fatigue tests with sequential exposure of UV light, varying temperatures and humidity, salt spray, flooding and their combination have been conducted. The extensive testing program provides 73 fatigue tests on butt-welded samples with a plate thickness t of 25 mm made of offshore typical steel of grade S355.