Detection of micrometer crack by Brillouin-scattering-based distributed strain and temperature sensor

Lufan Zou; Maria Q. Feng

doi:10.1117/12.785694

16 May 2008 Detection of micrometer crack by Brillouin-scattering-based distributed strain and temperature sensor

Lufan Zou, Maria Q. Feng

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 700419 (2008) https://doi.org/10.1117/12.785694
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

A Brillouin-scattering-based distributed strain and temperature sensor (DSTS) has been employed to detect cracks on ceramic by measuring the strain distributions along the surface of the ceramic for the first time. The existence of cracks and their locations are identified by measuring the strain distribution on a sensing fiber bonded on the ceramic surface. Due to innovated design and signal processing, the distributed Brillouin sensor developed for this study achieves a uniquely high resolution and accuracy. Experimental study on ceramic tile specimens demonstrated the efficacy of the distributed Brillouin fiber optic sensor in detecting and locating fine cracks.

Citation Download Citation

Lufan Zou and Maria Q. Feng "Detection of micrometer crack by Brillouin-scattering-based distributed strain and temperature sensor", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 700419 (16 May 2008); https://doi.org/10.1117/12.785694

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