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Dynamic structural health monitoring of a model wind turbine tower using distributed acoustic sensing

Maintenance of wind turbine towers is currently a manual process that requires visual inspection and bolt tightening yearly. This process is costly to energy companies and its necessity is not well-defined. In this study, two Rayleigh-based distributed fiber optic sensing technologies are evaluated and compared for their ability to monitor the dynamic structural behavior of a model wind turbine tower subject to free and forced vibration. They are further tested for their ability to detect structural phenomena associated with loose bolts and material damage within the tower.
Dynamic structural health monitoring of a model wind turbine tower using distributed acoustic sensing (DAS) Journal of Civil Structural Health Monitoring published online May 5, 2021
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