The paper represents the experimental study of combustion over the surface of a vertically-mounted oriented strand board panel under different environmental conditions. An infrared camera was used to obtain the sequences of thermograms characterizing the heat flow pattern on the surface of the sample during vertical combustion and determine the velocity of the combustion wave under laboratory and field conditions. In addition, the change in the angle of the combustion front was estimated depending on time.
The paper presents the experimental study results on the effect of heat flux emitted by a standard source on the charring and ignition characteristics of pine wood. Using a new method of setting the experiment with the recording of IR image, the charring rate and depth of the wood as a result of heat exposure from a standard source. The influence of several fire retardants on the charring rate and depth of samples is analysed. The use of noncontact IR diagnostics allows one to analyse the charring rate of pine wood depending on the intensity of heat flux and to draw up the temperature field.
The paper describes the study of the ignition of wood samples treated with a flame retardant in the presence of different ignition sources (firebrands, pine needle litter) under the laboratory conditions, and to obtain data on fire resistance of wood samples exposed to heat. The charring depth of the wood samples was determined depending on the type of wood, as well as on the type of the fire retardant used. The experimental results show that fire retardants significantly increase the protective properties of wood exposed to firebrands.