Temperature effects in concrete structures measured with fibre Bragg grating

Jean C.C. Silva; Cicero Martelli; Elisabeth Penner; Hypolito Jose Kalinowski

doi:10.1117/12.566530

9 June 2004 Temperature effects in concrete structures measured with fibre Bragg grating

Jean C.C. Silva, Cicero Martelli, Elisabeth Penner, Hypolito Jose Kalinowski

Proceedings Volume 5502, Second European Workshop on Optical Fibre Sensors; (2004) https://doi.org/10.1117/12.566530
Event: Second European Workshop on Optical Fibre Sensors, 2004, Santander, Spain

Abstract

We analyze the action of fire, causing degradation in a concrete cantilever beam using dynamic testing. The structure is instrumented with two fiber Bragg gratings (FBG) sensors. One of them is used to measure vibration and another one is used to measure temperature inside of the cantilever beam, while the beam is exposed to fire. The temperature in the cantilever beam increased until 150°C and a reduction in the strength of concrete can be observed through the modal analysis. A fiber Bragg grating interrogation system, based on tunable filter method, is used for the static and dynamic measurements during the experiments. That system has low cost and it is easy to assemble and maintain when compared to other available instruments.

Citation Download Citation

Jean C.C. Silva, Cicero Martelli, Elisabeth Penner, and Hypolito Jose Kalinowski "Temperature effects in concrete structures measured with fibre Bragg grating", Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); https://doi.org/10.1117/12.566530

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