scope:

This part of EN 1159 describes the laser flash method for the determination of thermal diffusivity of ceramic matrix composites with continuous fibre reinforcement. The experimental conditions are such that the material behaves in an homogeneous manner for each of its axes of anisotropy and that the heat transfer occurs only by thermal conduction. The method is applicable to materials which are physically and chemically stable during the measurement, and covers the range of temperature between 100 K and 2 800 K. It is suitable for the measurement of thermal diffusivity values in the range between 10 -4 m 2 s -1 and 10 -7 m 2 s -1 .