Thermophysical properties of fibre-reinforced materials at high temperatures

Carbon-based fibre-reinforced composites, candidate materials for protectiv e shields for the absorption of intense heat pulses, have been measured wit h respect to their thermophysical transport properties at different constan t sample temperatures between room temperature and 400 degreesC by using fr equency-dependent photothermal radiometry. Different methods of measurement and calibration have been applied and compared, namely measurements in the transmission and reflection configuration of thermal waves, and calibratio n with the help of reference samples measured at the same temperatures and calibration with the help of measurements at different temperatures.