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Proceedings Paper

Structural health monitoring of composite wind blades by fiber Bragg grating
Author(s): Zhan-Sheng Guo; Junqian Zhang; Hongjiu Hu; Xingming Guo
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Paper Abstract

The wind turbine industry is the fastest growing market area for the use of composite materials. Fiber Bragg grating sensor can be used to monitor the mechanical behavior of composite wind blade. The internal strain of composite wind blade during a constant stress amplitude fatigue testing process was monitored with fiber Bragg gratings sensors. FBG sensors can not only be embedded in composite structures to detect fatigue damage, but also have excellent durability compared with other sensors such as electric strain gauges. After 1 million cycles, the FBG sensors can still keep good sensibility. FBGs as a fatigue indicator are a novel sensor to monitor, evaluate and give crash alert for the health state of composite wind blades during their whole service life.

Paper Details

Date Published: 1 November 2007
PDF: 7 pages
Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64230I (1 November 2007); doi: 10.1117/12.779233
Show Author Affiliations
Zhan-Sheng Guo, Shanghai Univ. (China)
Junqian Zhang, Shanghai Univ. (China)
Hongjiu Hu, Shanghai Univ. (China)
Xingming Guo, Shanghai Univ. (China)


Published in SPIE Proceedings Vol. 6423:
International Conference on Smart Materials and Nanotechnology in Engineering

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