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Title: Structural health monitoring of wind turbine blade using fiber Bragg grating sensors and fiber optic rotary joint
Authors: Chen, Y
Ni, YQ 
Ye, XW
Yang, HX
Zhu, S 
Keywords: Fiber Bragg gratings
Fiber optics
Structural health monitoring
Wind turbine technology
Surveillance systems
Wind energy
Fiber Bragg grating interrogators
Issue Date: 2012
Publisher: SPIE-International Society for Optical Engineering
Source: Proceedings of SPIE : the International Society for Optical Engineering, 2012, v. 8345, 834534 (CD-ROM) How to cite?
Journal: Proceedings of SPIE : the International Society for Optical Engineering 
Abstract: Wind energy utilization as a reliable energy source has become a large industry in the last 20 years. Nowadays, wind turbines can generate megawatts of power and have rotor diameters that are on the order of 100 meters in diameter. One of the key components in a wind turbine is the blade which could be damaged by moisture absorption, fatigue, wind gusts or lighting strikes. The wind turbine blades should be routinely monitored to improve safety, minimize downtime, lower the risk of sudden breakdowns and associated huge maintenance and logistics costs, and provide reliable power generation. In this paper, a real-time wind turbine blade monitoring system using fiber Bragg grating (FBG) sensors with the fiber optic rotary joint (FORJ) is proposed, and applied to monitor the structural responses of a 600 W small scale wind turbine. The feasibility and effectiveness of the FORJ is validated by continuously transmitting the optical signals between the FBG interrogator at the stationary side and the FBG sensors on the rotating part. A comparison study between the measured data from the proposed system and those from an IMote2-based wireless strain measurement system is conducted.
Description: Conference on Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, San Diego, California, USA, 11-15 March 2012
ISSN: 0277-786X
EISSN: 1996-756X
DOI: 10.1117/12.914961
Appears in Collections:Conference Paper

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