Continuous fatigue assessment of offshore wind turbines using a stress prediction technique

Alexandros N. Iliopoulos; Christof Devriendt; Sokratis N. Iliopoulos; Danny Van Hemelrijck

doi:10.1117/12.2045576

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9 March 2014 Continuous fatigue assessment of offshore wind turbines using a stress prediction technique

Alexandros N. Iliopoulos, Christof Devriendt, Sokratis N. Iliopoulos, Danny Van Hemelrijck

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Proceedings Volume 9064, Health Monitoring of Structural and Biological Systems 2014; 90640S (2014) https://doi.org/10.1117/12.2045576
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2014, San Diego, California, United States

Abstract

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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Alexandros N. Iliopoulos, Christof Devriendt, Sokratis N. Iliopoulos, and Danny Van Hemelrijck "Continuous fatigue assessment of offshore wind turbines using a stress prediction technique", Proc. SPIE 9064, Health Monitoring of Structural and Biological Systems 2014, 90640S (9 March 2014); https://doi.org/10.1117/12.2045576

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