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Proceedings Paper

Remote monitoring and nondestructive evaluation of wind turbine towers
Author(s): Chih-Hung Chiang; Chih-Peng Yu; Keng-Tsang Hsu; Chia-Chi Cheng; Ying-Tzu Ke; Yi-Ru Shih
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Paper Abstract

Wind turbine towers are in need of condition monitoring so as to lower the cost of unexpected maintenance. Wind loading from turbulence and gusts can cause damage in horizontal axis wind turbines even the supporting towers. Monitoring of wind turbines in service using embedded data sensor arrays usually is not targeted at the turbine-tower interaction from the perspective of structural dynamics. In this study the remote monitoring of the tower supporting a horizontal-axis wind turbine was attempted using a microwave interferometer. The dominant frequency of one tower was found to be decreased by more than 20% in 16 months. Numerical modeling using spectral finite elements is in progress and should provide further information regarding frequency shift due to stiffness variation and added mass. Expected outcome will contribute to remote monitoring procedures and nondestructive evaluation techniques for local wind turbine structures during operation.

Paper Details

Date Published: 9 March 2014
PDF: 6 pages
Proc. SPIE 9063, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2014, 90631J (9 March 2014); doi: 10.1117/12.2044942
Show Author Affiliations
Chih-Hung Chiang, Chaoyang Univ. of Technology (Taiwan)
Chih-Peng Yu, Chaoyang Univ. of Technology (Taiwan)
Keng-Tsang Hsu, Chaoyang Univ. of Technology (Taiwan)
Chia-Chi Cheng, Chaoyang Univ. of Technology (Taiwan)
Ying-Tzu Ke, Chaoyang Univ. of Technology (Taiwan)
Yi-Ru Shih, Chaoyang Univ. of Technology (Taiwan)


Published in SPIE Proceedings Vol. 9063:
Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2014
H. Felix Wu; Tzu-Yang Yu; Andrew L. Gyekenyesi; Peter J. Shull, Editor(s)

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