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Proceedings Paper

Strain sensing in fatigue test of metallic material at liquid nitrogen temperature using fiber Bragg gratings
Author(s): Rong Fu; Dongsheng Zhang; Jieyan Li; Wei Li
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Paper Abstract

The problem about the chirp phenomenon of the FBG reflection spectrums which is usually observed in the previous experiments has been properly solved. We found that FBG chirp phenomena at liquid nitrogen temperature are not caused by optical mechanism, but are mainly attributed to the inhomogeneous strain distribution. The chirp phenomena of FBGs at liquid nitrogen temperature can be eliminated by proper packaging process. A real-time strain sensing in fatigue test of metallic material at liquid nitrogen temperature using fiber Bragg gratings was conducted. The experimental results are significant to the applications and research of Fiber Bragg Grating in the fields of aerospace and superconducting.

Paper Details

Date Published: 11 October 2010
PDF: 6 pages
Proc. SPIE 7656, 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, 765635 (11 October 2010); doi: 10.1117/12.867895
Show Author Affiliations
Rong Fu, Wuhan Univ. of Technology (China)
Dongsheng Zhang, Wuhan Univ. of Technology (China)
Jieyan Li, Wuhan Univ. of Technology (China)
Wei Li, Wuhan Univ. of Technology (China)


Published in SPIE Proceedings Vol. 7656:
5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment

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