Fiber Bragg grating sensors embedded in concrete samples for a normalized fire test

Antonio Bueno; Benjamín Torres; David Barrera; Pedro Calderón; José Manuel Lloris; María José López; Salvador Sales

doi:10.1117/12.885928

18 May 2011 Fiber Bragg grating sensors embedded in concrete samples for a normalized fire test

Antonio Bueno, Benjamín Torres, David Barrera, Pedro Calderón, José Manuel Lloris, María José López, Salvador Sales

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77538R (2011) https://doi.org/10.1117/12.885928
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

Optical fiber sensors based on Fiber Bragg Gratings (FBG) have been embedded in concrete samples for temperature measurement. Three different types of gratings have been used in this experiment: FBGs inscribed in photosensitive germanium-boron codoped fiber and Regenerated Fiber Bragg Gratings (RFBG) inscribed in germanium doped and in germanium-boron codoped fiber. The concrete samples were placed inside a fire chamber where the temperature was increased above 1000ºC as described in the Spanish/European standard UNE-EN 1363-1 temperature profile for concrete resistance to real fire. The temperature was monitored in real time. We have compared the performance of the optical sensors and electrical thermocouples. The RFBGs have shown a very good performance while the FBGs are able to monitor high-temperatures until their disappearance.

Citation Download Citation

Antonio Bueno, Benjamín Torres, David Barrera, Pedro Calderón, José Manuel Lloris, María José López, and Salvador Sales "Fiber Bragg grating sensors embedded in concrete samples for a normalized fire test", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77538R (18 May 2011); https://doi.org/10.1117/12.885928

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