Bridge monitoring by Brillouin-based distributed strain measurements

Aldo Minardo; Romeo Bernini; Lucio Amato; Luigi Zeni

doi:10.1117/12.866253

9 September 2010 Bridge monitoring by Brillouin-based distributed strain measurements

Aldo Minardo, Romeo Bernini, Lucio Amato, Luigi Zeni

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 765344 (2010) https://doi.org/10.1117/12.866253
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

We report the results of a load test performed on a road-bridge. In particular, the tests were performed by a portable prototype based on stimulated Brillouin scattering in optical fibers. The optical fiber sensor was able to provide the strain profile along the beam, with a spatial resolution of three meters and a strain accuracy of ± 20 εμ. Comparison with finite-elements-method simulations, as well as with data collected by vibrating wire strain gauges, permitted to confirm the validity of the SBS-based approach in monitoring the deformation of large structures.

Citation Download Citation

Aldo Minardo, Romeo Bernini, Lucio Amato, and Luigi Zeni "Bridge monitoring by Brillouin-based distributed strain measurements", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 765344 (9 September 2010); https://doi.org/10.1117/12.866253

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