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Experimental tools applied to ignition study of spruce wood under cone calorimeter

Abstract : A study of wood ignition was performed using a dedicated experimental setup including a cone calorimeter. This setup mainly includes a non-intrusive metrology by infrared camera, enabling an accurate surface temperature measurement and a fast visible camera (3000 fps), used to observe the "auto" ignition location. The study was carried out in vertical orientation only. Fast visible camera pictures showed three types of ignition: auto-ignition close to the exposed surface, auto-ignition far from the exposed surface and ignition piloted by the cone coil. Ignition occurred only above 45 kW.m −2. Besides, for low heat fluxes, no ignition occurred but it was possible to observe a transition between pyrolysis solely, without combustion, and smoldering combustion for a sample surface temperature around 400 • C.
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Lucas Terrei, Zoubir Acem, Véronique Georges, Paul Lardet, Pascal Boulet, et al.. Experimental tools applied to ignition study of spruce wood under cone calorimeter. Fire Safety Journal, Elsevier, 2019, 108, pp.102845. ⟨10.1016/j.firesaf.2019.102845⟩. ⟨hal-02410594⟩

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