  Presented study concerns the possibility of evaluation of interfacial thermal
resistance (ITR) between the constituents in composite materials with the use
of flash technique. Two variants of such measurement are considered, the first
of which is the measurement of ITR between two bonded layers of different
materials which had been studied before by various researchers. The second
tested measurement method is targeted at determination of ITR in particulate
composites with low and moderate filler content based on their effective
thermal conductivity. Method of such measurement is proposed and tested on two
cases of particle-filled polymer composites. Positive verification results were
obtained for polymer/glass composite in which the difference between thermal
conductivities of matrix and filler is low. For a polymer filled with aluminum
particles the evaluation of average ITR in the samples was impossible as the
effective medium models applied in the method strongly underestimated the
thermal conductivity of that material. The investigation confirmed the need for
more accurate methods of macroscopic thermal properties prediction for
composite media with high contrast of thermal conductivities of the
constituents. Extended literature study suggests that the method can be
applicable to selected classes of engineering materials.
