In this paper, a wind turbine blade surface shape monitoring system based on Optical Frequency Domain Reflection technology (OFDR) and Multi-Core Optical Fiber (MCOF) shape sensing is designed, and theoretical simulation and analysis are conducted on it. Firstly, a blade model with the airfoil of NACA-4412 is built based on Glauert vortex theory. Secondly, Finite Element Analysis (FEA) is used to calculate the blade’s deformation under aerodynamic forces. Then, the Rotation Minimizing Frame (RMF) is used to calculate the theoretical strain results of the outer cores. Finally, the shape of MCOF is computed using the strain results according to Parallel Transport Frames (PTF) and is compared with FEA results. The shape of MCOF reflected the shape of the blade surface under aerodynamic forces. This paper theoretically verifies the feasibility of reconstructing the blade’s surface shape using OFDR distributed strain measurement and MCOF.
A wind turbine tower damage detection method based on optical frequency domain reflection (OFDR) technology is proposed in this paper, which can detect structural damage position and damage degree of wind turbine towers. The damage location of the wind turbine tower structure can be accurately detected by the method with a spatial resolution of 1cm, the detection error of damage degree is less than 2.2%. This method provides a candidate solution for real-time detection of wind turbine tower damage.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.