A study of the heat transfer characteristics of a heat-insulating composite material

The temperature dependence of the thermal conductivity coefficient of a heat-insulating composite is investigated analytically and experimentally. The results of a thermophysical experiment are processed using an approach based on solving an inverse heat conduction problem for two different mathematical models, i.e., a system of equations of nonstationary heat transfer allowing for thermal degradation processes and a homogeneous equation of heat conductivity. The results are compared with those obtained by using the monotonic heating method. The effect of temperature measurement errors on the accuracy of the results is evaluated through a numerical simulation.