Abstract
Detailed information about temperature distribution can be important to understand structural behavior in fire. This study develops a method to image three-dimensional temperature distributions in steel–concrete composite slabs using distributed fiber optic sensors. The feasibility of the method is explored using six 1.2 m × 0.9 m steel–concrete composite slabs instrumented with distributed sensors and thermocouples subjected to fire for over 3 h. Dense point clouds of temperature in the slabs were measured using the distributed sensors. The results show that the distributed sensors operated at material temperatures up to 960◦C with acceptable accuracy for many structural fire applications. The measured non-uniform temperature distributions indicate a spatially distributed thermal response in steel–concrete composite slabs, which can only be adequately captured using approaches that provide a high density of through-depth data points.
Original language | English |
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Article number | 5518 |
Pages (from-to) | 1-19 |
Number of pages | 19 |
Journal | Sensors (Switzerland) |
Volume | 20 |
Issue number | 19 |
DOIs | |
State | Published - 1 Oct 2020 |
Keywords
- Composite structure
- Distributed fiber optic sensors
- Fiber optic sensors
- Fire
- High temperature
- Temperature distribution