Patent ID: 8560265

Claim:
A method for determination of thermal properties of a solid body, comprising the following steps: predetermining relationships between the calculated thermal conductivity of the solid body and the shape and irregularities of the solid body surface; providing a thermal contact between the solid body and a heater equipped with a hold-down element and a heat insulator located from the hold-down element side, the heater made in the form of a flexible membrane capable of taking the shape of the solid body surface under the action of the hold-down pressure and additionally serving as a temperature sensor, over the entire heater surface by changing the heater shape in such a way as to ensure that it fits the shape and irregularities of the solid body surface; heating the solid body with the heater and registering the heater temperature during the heating throughout the entire heater surface in contact with the solid body; determining a starting moment of thermal convection of the ambient medium as the moment when the measurement data start distorting, stopping the heating and continuing registration of the heater temperature, determining thermal conductivity and thermal diffusivity of the solid body by processing the heater temperature measurement data both in the time range from the start of the solid body heating process to the start of the thermal convention of the ambient medium and after the termination of the solid body heating process, with the heater temperature measurement data being processed and the thermal conductivity and thermal diffusivity of the solid body being determined by using the pre-determined relationships between the calculated thermal conductivity and the shape and irregularities of the solid body surface.