Title :
Concrete Beam Bending Test Monitorization Using a High Strain Fiber Optic Sensor
Author :
Bravo, M. ; Sáenz, J. ; Bravo-Navas, M. ; Lopez-Amo, M.
Author_Institution :
Dept. de Ing. Electr. y Electron., Univ. Publica de Navarra, Pamplona, Spain
fDate :
4/15/2012 12:00:00 AM
Abstract :
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.
Keywords :
beams (structures); bending; concrete; fibre optic sensors; optical time-domain reflectometry; strain measurement; testing; backscattering measurement; bending sensor; concrete beam bending test monitorization; dual configuration; eight shape fiber optic sensor; high strain fiber optic sensor; high strain measurement; intensity pulse transmission; optical time domain reflectometer; strain sensor; Concrete; Fiber gratings; Optical fiber networks; Optical fiber sensors; Optical fibers; Strain; Bending sensors; OTDR; fiber Bragg grating; structural health monitoring;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2011.2169233
