In-depth temperature during fire spread on a wooden panel at intermediate scale

In the context of fire safety, real and intermediate scale testing of wooden facades is crucial for validation purposes, particularly with regard to modelling flame propagation on combustible vertical walls, for example. However, the metrology used remains limited especially due to the difficulty of finely instrumenting walls on a large-scale study. Therefore, the proposed work is to implement fine instrumentation on a wooden panel at intermediate-scale (150 × 50 cm2) subjected to a controlled heat source. This metrology is based on the implantation of fine thermocouple wires, in wooden cylinders machined beforehand. A total of 22 cylinders with five thermocouples, i.e. 110 thermocouples, were placed in a wooden panel at different heights and widths. The sample was then exposed to a heat flux of 40 kW.m−2 using a radiant panel.