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Proceedings Paper

Temperature effects in concrete structures measured with fibre Bragg grating
Author(s): Jean C.C. Silva; Cicero Martelli; Elisabeth Penner; Hypolito Jose Kalinowski
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Paper 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.

Paper Details

Date Published: 9 June 2004
PDF: 4 pages
Proc. SPIE 5502, Second European Workshop on Optical Fibre Sensors, (9 June 2004); doi: 10.1117/12.566530
Show Author Affiliations
Jean C.C. Silva, Ctr. Federal de Educacao Tecnologica do Parana (Brazil)
Univ. de Aveiro (Brazil)
Cicero Martelli, Ctr. Federal de Educacao Tecnologica do Parana (Brazil)
Elisabeth Penner, Ctr. Federal de Educacao Tecnologica do Parana (Brazil)
Hypolito Jose Kalinowski, Ctr. Federal de Educacao Tecnologica do Parana (Brazil)


Published in SPIE Proceedings Vol. 5502:
Second European Workshop on Optical Fibre Sensors
Jose Miguel Lopez-Higuera; Brian Culshaw, Editor(s)

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