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Proceedings Paper

Health monitoring of engine blades by using an in-line fiber-optic F-P strain sensor based on hollow-core photonic crystal fiber
Author(s): Yunjiang Rao; Yanen Fan; Hong Li; Tao Zhu
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Paper Abstract

We present the application of a fiber-optic F-P strain sensor based on hollow-core photonic crystal fiber (HCPCF) to measurement of stress of engine blades. The blade stress under different rotating speeds is tested by detecting the reflected wavelength shift of the HCPCF sensor. The experimental results show that the strain has a quadratic relationship with the rotating speed, which agrees well with the theoretical analysis. As such a HCPCF sensor with short cavity length can stand high temperature of up to 600°C and has low temperature sensitivity, it would be possible to realize real-time health monitoring of engine blades during operation.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75035R (5 October 2009); doi: 10.1117/12.835269
Show Author Affiliations
Yunjiang Rao, Chongqing Univ. (China)
Univ. of Electronic Science & Technology (China)
Yanen Fan, Chongqing Univ. (China)
Hong Li, Chongqing Univ. (China)
Tao Zhu, Chongqing Univ. (China)
Univ. of Electronic Science & Technology (China)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors
Julian D. C. Jones, Editor(s)

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