METHOD OF DETERMINING SET OF THERMOPHYSICAL PROPERTIES OF ISOTROPIC MATERIALS Russian patent published in 2015 - IPC G01N25/18 

FIELD: physics.

SUBSTANCE: method of determining set of thermophysical properties of isotropic materials includes applying thermal action from an infrared heat source on the entire surface of the analysed isotropic material; using a thermal imaging detector to measure radiant temperature at all points of the spatial grid of the surface of the analysed isotropic material; continuous uniform heating of the surface of the reference/analysed isotropic material from a movable infrared heat source; wherein with the beginning of movement, radiant temperature is measured on the surface of the reference isotropic material with known thermophysical properties at one point of the spatial grid of the surface of the reference isotropic material, falling on the lens of the thermal imaging detector; radiant temperature is then measured on the surface of the analysed isotropic material at all points of the spatial grid of the surface of the analysed isotropic material while cooling; applying a differential model using implicit schemes; solving an optimisation parametric problem for the analysed isotropic material at each point of spatial resolution according to the image pattern; determining the unknown estimates of thermophysical properties of the analysed isotropic material from the minimum closing error.

EFFECT: high accuracy of obtained data.

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