ISO 22007-4:2008 specifies a method for the determination of the thermal diffusivity of a thin solid disc of plastics in the thickness direction by the laser flash method. This method is based upon the measurement of the temperature rise at the rear face
DS/EN ISO 22007-4:2012 history
2012DS/EN ISO 22007-4:2012 Plastics - Determination of thermal conductivity and thermal diffusivity - Part 4: Laser flash method