Compared performances of Rayleigh, Raman, and Brillouin distributed temperature measurements during concrete container fire test

S. Delepine-Lesoille; I. Planes; M. Landolt; G. Hermand; O. Perrochon

doi:10.1117/12.2263449

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23 April 2017 Compared performances of Rayleigh, Raman, and Brillouin distributed temperature measurements during concrete container fire test

S. Delepine-Lesoille, I. Planes, M. Landolt, G. Hermand, O. Perrochon

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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103236G (2017) https://doi.org/10.1117/12.2263449
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

We present a distributed fiber optic sensing scheme to study 3D temperature fields inside concrete containers submitted to fire. High spatial resolution (3cm to 13cm), temperature uncertainty better than 3°C and rapid measurements (in the minute range) were required. We thus compared advantages and drawbacks of three sensing chains, based on Rayleigh, Brillouin and Raman scatterings; such distributed measurements were also compared with thermocouples (up to 250 measuring points). Practical field implementation limits are also underlined. Fire tests are a promising application for distributed optical fiber sensors.

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S. Delepine-Lesoille, I. Planes, M. Landolt, G. Hermand, and O. Perrochon "Compared performances of Rayleigh, Raman, and Brillouin distributed temperature measurements during concrete container fire test", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236G (23 April 2017); https://doi.org/10.1117/12.2263449

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