TY - GEN
T1 - In-operational damage detection and localization of the wind turbine by using the self-tracking scanning laser vibrometer
AU - Li, D.
AU - Rixen, D. J.
N1 - Publisher Copyright:
© 2022 Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics. All rights reserved.
PY - 2022
Y1 - 2022
N2 - Operational modal analysis is used instead of the classical modal analysis where it is difficult or impossible to control an ambient excitation of the large or complex structures. Since the modal parameters are directly influenced by the physical properties of the structures, OMA has been performed to detect damage by using sensors mounted in pre-defined locations. However, it is impossible to detect the spatial locations of damages for wind turbine blades due to a limited number of the sensors used. In this paper, a prototype of a self-tracking continuous scanning laser Doppler Vibrometer (CSLDV) is developed for the tracking of the time-varying scan path on the rotating structure. Harmonic power spectrum method is extended to be applied on the periodic scanning measurement of the LTP systems. The damage localization of the blade can be done by detecting the abrupt change in curvature of the mode shapes. A test rig with a small wind turbine is presented for which the proposed measurement and analysis methods are evaluated.
AB - Operational modal analysis is used instead of the classical modal analysis where it is difficult or impossible to control an ambient excitation of the large or complex structures. Since the modal parameters are directly influenced by the physical properties of the structures, OMA has been performed to detect damage by using sensors mounted in pre-defined locations. However, it is impossible to detect the spatial locations of damages for wind turbine blades due to a limited number of the sensors used. In this paper, a prototype of a self-tracking continuous scanning laser Doppler Vibrometer (CSLDV) is developed for the tracking of the time-varying scan path on the rotating structure. Harmonic power spectrum method is extended to be applied on the periodic scanning measurement of the LTP systems. The damage localization of the blade can be done by detecting the abrupt change in curvature of the mode shapes. A test rig with a small wind turbine is presented for which the proposed measurement and analysis methods are evaluated.
UR - http://www.scopus.com/inward/record.url?scp=85195984501&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:85195984501
T3 - Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics
SP - 4629
EP - 4640
BT - Proceedings of ISMA 2022 - International Conference on Noise and Vibration Engineering and USD 2022 - International Conference on Uncertainty in Structural Dynamics
A2 - Desmet, W.
A2 - Pluymers, B.
A2 - Moens, D.
A2 - Neeckx, S.
PB - KU Leuven, Departement Werktuigkunde
T2 - 30th International Conference on Noise and Vibration Engineering, ISMA 2022 and 9th International Conference on Uncertainty in Structural Dynamics, USD 2022
Y2 - 12 September 2022 through 14 September 2022
ER -