CALCULATION OF THE TEMPERATURE OF POLYMER OR COMPOSITE SURFACES PLACED IN AN INFRARED-LASER FIELD

We consider methods for calculating the surface temperature T-s of pol ymers upon exposure to infrared laser radiation during modification, p yrolysis, ablation, ignition, etc. We have shown that we need to calcu late the values of T-s for polymers using different analytical express ions after estimating the value of the dimensionless parameter u = mu root at(e), where mu is the absorption coefficient for the laser radia tion, a is the thermal diffusivity, and t(e) is the radiation exposure time. Under these conditions, we achieve the smallest calculation err or and we can take into account ''volume'' absorption of radiation.