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Concrete Beam Bending Test Monitorization Using a High Strain Fiber Optic Sensor

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4 Author(s)
Bravo, M. ; Dept. de Ing. Electr. y Electron., Univ. Publica de Navarra, Pamplona, Spain ; Saenz, J. ; Bravo-Navas, M. ; Lopez-Amo, M.

In this work the development of an “eight-shape” fiber optic sensor for high strain measurement is experimentally demonstrated. This strain sensor is interrogated using a commercial optical time domain reflectometer through a dual configuration that is able to measure backscattering and the transmission of an intensity pulse while reducing unwanted cladding-mode coupling effects. An `in field' concrete beam bending test was also performed in order to compare the proposed intensity bending sensor with the mature fiber Bragg grating technology.

Published in:

Lightwave Technology, Journal of  (Volume:30 ,  Issue: 8 )

Date of Publication:

April15, 2012

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