Highly precise distributed Brillouin scattering sensor for structural health monitoring of optical ground wire cable

Lufan Zou; Fabien Ravet; Xiaoyi Bao; Liang Chen

doi:10.1117/12.540193

29 July 2004 Highly precise distributed Brillouin scattering sensor for structural health monitoring of optical ground wire cable

Lufan Zou, Fabien Ravet, Xiaoyi Bao, Liang Chen

Author Affiliations +

Proceedings Volume 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems; (2004) https://doi.org/10.1117/12.540193
Event: Smart Structures and Materials, 2004, San Diego, CA, United States

Abstract

A distributed Brillouin scattering sensor with high special precision has been developed for the measurement of small damages/cracks of 1.5 cm. The out-layer damaged regions in an optical ground wire (OPGW) cable have been identified successfully by measuring the strain distributions every 5 cm using this technology. The stress increased to 127 kN which corresponds to more than 7500 micro-strain in the fibers. The locations of structural indentations comprising repaired and undamaged regions are found and distinguished using their corresponding strain data. The elongation of repaired region increases with time on 127 kN. These results are quantified in terms of the fiber orientation, stress, and behavior relative to undamaged sections.

Citation Download Citation

Lufan Zou, Fabien Ravet, Xiaoyi Bao, and Liang Chen "Highly precise distributed Brillouin scattering sensor for structural health monitoring of optical ground wire cable", Proc. SPIE 5391, Smart Structures and Materials 2004: Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems, (29 July 2004); https://doi.org/10.1117/12.540193

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