European Commission
A EUROPEAN PROJECT SUPPORTED THROUGH
THE SEVENTH FRAMEWORK PROGRAMME
FOR RESEARCH AND TECHNOLOGICAL DEVELOPMENT
agence de communication Lyon

Measurement of sample surface temperature during a degradation test under cone calorimeter

The CNRS partners PPrime and LEMTA have joined their skills and setups in order to perform degradation tests on composite samples combined with radiative transfer measurements. The objective was to provide the modelers with a complete data set obtained on academic degradation tests dedicated to model validation. For that, a Fourier Transform InfraRed spectrometer together with an IR camera were used to register the radiation emitted by the sample during degradation (see Figures below).

 

Flux data were converted into surface temperature accounting for corrections involving unwanted reflection from the sample and spectral emissivity aimed at evaluating the true temperature of the sample. Infrared images showed the temperature variations at the surface. Average values were also evaluated. Beside the expected characterization of the FireComp samples, this collaborative work brings an innovative method of temperature estimation in such degradation tests.

 

Experimental setup based on a standard cone calorimeter completed by infrared characterization by FTIR spectrometer and infrared camera
Typical infrared image of the sample surface taken through the cone aperture (spectral intensity in SI units)
Average sample temperature evaluated from spectroscopic measurements for different incident fluxes on the sample