TY - GEN
T1 - Measuring temperature distribution in steel-concrete composite slabs subjected to fire using brillouin scattering based distributed fiber optic sensors
AU - Bao, Yi
AU - Hoehler, Matthew S.
AU - Smith, Christopher M.
AU - Bundy, Matthew
AU - Chen, Genda
N1 - Publisher Copyright:
Copyright © SHMII 2019. All rights reserved.
PY - 2019
Y1 - 2019
N2 - This study investigates temperature distributions in steel-concrete composite slabs subjected to fire using distributed fiber optic sensors. Several 1.2 m × 0.9 m composite slabs instrumented with telecommunication-grade single-mode fused silica fibers were fabricated and subjected to fire for over 3 hours. Temperatures were measured at centimeter-scale spatial resolution by means of pulse pre-pumped Brillouin optical time domain analysis. The distributed fiber optic sensors operated at material temperatures higher than 900 °C with adequate sensitivity and accuracy to allow structural performance assessment, demonstrating their effective use in structural fire applications. The measured temperature distributions indicate a spatially-varying, fire-induced thermal response in steel-concrete composite slab, which can only be adequately captured using approaches that provide high data point density.
AB - This study investigates temperature distributions in steel-concrete composite slabs subjected to fire using distributed fiber optic sensors. Several 1.2 m × 0.9 m composite slabs instrumented with telecommunication-grade single-mode fused silica fibers were fabricated and subjected to fire for over 3 hours. Temperatures were measured at centimeter-scale spatial resolution by means of pulse pre-pumped Brillouin optical time domain analysis. The distributed fiber optic sensors operated at material temperatures higher than 900 °C with adequate sensitivity and accuracy to allow structural performance assessment, demonstrating their effective use in structural fire applications. The measured temperature distributions indicate a spatially-varying, fire-induced thermal response in steel-concrete composite slab, which can only be adequately captured using approaches that provide high data point density.
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M3 - Conference contribution
AN - SCOPUS:85091670904
T3 - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019 - Conference Proceedings
SP - 1366
EP - 1371
BT - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure
A2 - Chen, Genda
A2 - Alampalli, Sreenivas
T2 - 9th International Conference on Structural Health Monitoring of Intelligent Infrastructure: Transferring Research into Practice, SHMII 2019
Y2 - 4 August 2019 through 7 August 2019
ER -