Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Revaluation of Fatigue Thickness Effect Based on Fatigue Test Database

Version 1 : Received: 10 September 2020 / Approved: 12 September 2020 / Online: 12 September 2020 (09:54:28 CEST)

How to cite: Zhao, W.; Hsu, W. Revaluation of Fatigue Thickness Effect Based on Fatigue Test Database. Preprints 2020, 2020090268 (doi: 10.20944/preprints202009.0268.v1). Zhao, W.; Hsu, W. Revaluation of Fatigue Thickness Effect Based on Fatigue Test Database. Preprints 2020, 2020090268 (doi: 10.20944/preprints202009.0268.v1).

Abstract

This paper reassesses the detrimental effect on fatigue performance due to thicker sections based on extensive fatigue strength test database, taken from research program worldwide over the past half of a century in offshore oil & gas and renewable industry. The data entries in the database have been evaluated to ensure its data integrity. Statistical analyses on these S-N data are performed with or without the thickness correction at different exposure level to corrosive environment, in order to re-evaluate the suitability of current standards in regard to the thickness effect. The study has concentrated on T-joint, transverse butt welded joint and tubular joint as these are the most commonly used joint types in the offshore wind industry. The analysis indicates general agreement of fatigue strength with the thickness effects in current standard for in air conditions but great conservatism for corrosive environment.

Subject Areas

fatigue; thickness effect; offshore wind turbine; corrosion fatigue

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