Wind turbine blade’s surface shape reconstruction based on OFDR and multi-core optical fiber

Zifan Han; Mingming Luo; Tian Gu; Jianfei Liu

doi:10.1117/12.3008098

18 December 2023 Wind turbine blade’s surface shape reconstruction based on OFDR and multi-core optical fiber

Zifan Han, Mingming Luo, Tian Gu, Jianfei Liu

Proceedings Volume 12968, AOPC 2023: Optic Fiber Gyro ; 1296822 (2023) https://doi.org/10.1117/12.3008098
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

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.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Zifan Han, Mingming Luo, Tian Gu, and Jianfei Liu "Wind turbine blade’s surface shape reconstruction based on OFDR and multi-core optical fiber", Proc. SPIE 12968, AOPC 2023: Optic Fiber Gyro , 1296822 (18 December 2023); https://doi.org/10.1117/12.3008098

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