FIELD: thermal tests.
SUBSTANCE: proposed method includes measurement of experimental specimen thickness, heat supply to two identical specimens, and keeping of external surfaces of specimens at temperature equal to desired value. In the process specific power of heat source is recorded and temperature is measured in the course of experiment at constant time steps. Transient parameter value is determined at each time step and compared with maximal value within desired range. During first phase of experiment dc power is supplied to volume heat source and target value of heat conductance is calculated using recorded data. During second phase power supply to volume heat source is ceased and target thermal diffusivity is found from recorded data.
EFFECT: enlarged range of material thermal characteristics that can be evaluated; enhanced measurement accuracy.
1 cl, 10 dwg
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