Fatigue load monitoring with standard wind turbine signals [Elektronische Ressource] / by Nicolai Cosack

Fatigue Load Monitoring withStandard Wind Turbine SignalsA thesis accepted by the Faculty of Aerospace Engineering and Geodesy of the¨Universitat Stuttgart in partial fulfilment of the requirements for the degree ofDoctor of Engineering Sciences (Dr.-Ing.)byNicolai Cosackborn in Celle, GermanyMain referee: Prof. Dr. Dipl.-Ing. Martin Kuhn¨Co-referee: Prof. Dr. rer. nat. Joachim PeinkeDate of defence: 7th of April 2010Endowed Chair of Wind Energy at the Institute of Aircraft DesignUniversitat¨ Stuttgart2010IAcknowledgementsSeveral people and institutions contributed to the successfull preparation of this thesisand supported this work in many ways. Therefore, I would like to express my gratitudeto my supervisor and main referee Prof. Dr. Dipl.-Ing. Martin Kuhn,¨ my co-referee Prof.Dr. rer. nat. Joachim Peinke, the staff at the Insitute of Aircraft Design and especiallyall employees at the Endowed Chair of Wind Energy. I would also like to thank myfamily and friends for their encouragement throughout the years.Parts of the work presented in the following have been carried out within the researchproject ”Verification of Offshore Wind Turbines” (OWEA, FKZ 0327696A) supported bythe Federal Ministry for Environment, Nature Conservation and Nuclear Safety (BMU)in the scope of the joint research initiative ”Research at Alpha Ventus” (RAVE).