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Proceedings Article

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

[+] Author Affiliations
Antonio Bueno, Benjamín Torres, David Barrera, Pedro Calderón, Salvador Sales

Univ. Politécnica de Valencia (Spain)

José Manuel Lloris, María José López

Instituto Tecnologico de la Construcción (Spain)

Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77538R (May 17, 2011); doi:10.1117/12.885928
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From Conference Volume 7753

  • 21st International Conference on Optical Fiber Sensors
  • Ottawa, Canada | May 15, 2011

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.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Antonio Bueno ; Benjamín Torres ; David Barrera ; Pedro Calderón ; José Manuel Lloris, et al.
"Fiber Bragg grating sensors embedded in concrete samples for a normalized fire test", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77538R (May 17, 2011); doi:10.1117/12.885928; http://dx.doi.org/10.1117/12.885928


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