METHOD OF ESTIMATING DIFFERENCE OF THERMOPHYSICAL PROPERTIES OF VISIBLE SURFACE OF ISOTROPIC TAKING INTO ACCOUNT BACKGROUND Russian patent published in 2015 - IPC G01N25/18 

FIELD: physics.

SUBSTANCE: method includes applying thermal action from an infrared heat source on the entire surface of analysed isotropic object; using a thermal imaging detector to measure radiant temperature at all points of the spatial grid of the probed surface of the analysed isotropic object; placing the thermal imaging detector at a given distance d from the axis of the geometric centre of the analysed object and circular movement of the thermal imaging detector at a constant speed relative to the geometric centre of the object, or immovably placing the thermal imaging detector at a given distance d from the axis of the geometric centre of the analysed object, while rotating at a constant speed the analysed isotropic object and the background relative to the axis of the rotary structure where they are located; forming a set of thermograms of circular scans of the radiant infrared images of the object and the background obtained at different moments in time; applying a differential model using implicit schemes; determining, from the minimum closing error, unknown estimates for each point of spatial distribution of thermophysical properties of the analysed isotropic object.

EFFECT: high accuracy of obtained data.

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