Bridge Monitoring by Distributed Strain Measurement Using a Time-Domain Brillouin Sensing System

Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 91)

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 (SBS) in optical fibers. The optical fiber sensor, previously attached along the steel beam, was able to provide the strain profile along the structure, with a spatial resolution of 3 m and a strain accuracy of ±20 ??. A 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.

Keywords

Optical Fiber Steel Beam Optical Fiber Sensor Stimulate Brillouin Scattering Strain Profile 
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References

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Istituto per il Rilevamento Elettromagnetico dell’Ambiente, Consiglio Nazionale delle RicercheNaplesItaly
  2. 2.Tecno In S.p.A.NaplesItaly
  3. 3.Dipartimento di Ingegneria per l’InformazioneSeconda Università di NapoliAversaItaly

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