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MEASUREMENT DRIVEN FATIGUE ASSESSMENT OF OFFSHORE WIND TURBINE FOUNDATIONS
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences.
2017 (English)Independent thesis Advanced level (degree of Master (One Year)), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

The installed capacity of offshore wind turbines in Europe is increasing with the monopile being the most common type of foundation. During its lifetime an offshore wind turbine is exposed to high dynamic loads which eventually can result in the fatigue of the substructure. This thesis will show how the linear damage accumulation approach based on the Miner’s rule can be used to estimate the damage induced on the substructure of an offshore wind turbine using measurements from strain gauges. Furthermore, the most important environmental influences will be illustrated and the different stress concentration factors and the size effect introduced in the industry guideline DNVGL-RP-C203 will be analysed towards their effect on the calculated lifetime.

Place, publisher, year, edition, pages
2017. , p. 48
Keywords [en]
offshore wind turbine, monopile foundation, wind power, fatigue assessment
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:uu:diva-337960OAI: oai:DiVA.org:uu-337960DiVA, id: diva2:1171201
Educational program
Master Programme in Wind Power Project Management
Supervisors
Examiners
Available from: 2018-01-22 Created: 2018-01-05 Last updated: 2018-01-22Bibliographically approved

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  • apa
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