Continuous fatigue assessment of offshore wind turbines using a stress prediction technique
Iliopoulos, A.N.; Devriendt, C.; Iliopoulos, S.N.; Van Hemelrijck, D. (2014). Continuous fatigue assessment of offshore wind turbines using a stress prediction technique, in: Kundu, T. (Ed.) Health Monitoring of Structural and Biological Systems 2014. Proceedings of SPIE, the International Society for Optical Engineering, 9064: pp. 11 pp. dx.doi.org/10.1117/12.2045576
In: Kundu, T. (Ed.) (2014). Health Monitoring of Structural and Biological Systems 2014. Proceedings of SPIE, the International Society for Optical Engineering, 9064. SPIE: Bellingham. ISBN 978-0-819-4999-0-5. 792 pp., more
In: Proceedings of SPIE, the International Society for Optical Engineering. SPIE: Bellingham, WA. ISSN 0277-786X; e-ISSN 1996-756X, more
Fatigue assessment includes estimation of the expected damage accumulation and the remaining life-time of the structure. This work is based on output-only vibration measurements at a limited number of locations provided by a sensor network installed on the structure. For the fatigue damage assessment, the stress time responses are obtained by using the vibration sensor data and a modal expansion approach enabling predictions of stresses at positions where sensor installation is not possible. A methodology for the prediction of stresses based on the combination of a finite element numerical model and the accelerations recorded at measurement locations is presented in this paper.
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