METHOD FOR NON-CONTACT NON-DESTRUCTIVE CONTROL OF THICKNESS, THERMO-PHYSICAL PROPERTIES AND POROSITY OF METALLIC FRAME OF TWO-LAYERED RIBBON MATERIALS Russian patent published in 2007 - IPC G01B7/06 G01N25/00 

FIELD: measuring equipment.

SUBSTANCE: in accordance to method, product and standard in form of cylindrical drum are heated by means of point sources of thermal energy. Product is moved and standard is rotated so that circular speed of rotation of surface of standard equals the product movement speed. By means of thermo-receiver, excessive limit temperature of heated surface of product is measured in the point positioned behind point source of thermal energy along its movement line. Lagging distance of temperature control point from central spot of heating by point source of thermal energy is measured. By means of second thermo-receiver, excessive temperature of heated surface of product is measured along line, perpendicular to line of movement of point source of thermal energy. For different values of power of point source of thermal energy, distance between temperature control points is altered along the line, perpendicular to line of movement of point source of thermal energy until temperature of surface in control point by means of second thermo-receiver reaches a value set in advance, value of which point is set to be equal to sensitivity of control-measuring equipment. Aforementioned distances are measured. Temperature is measured along movement line of thermal energy source at various power values. Measured further is excessive temperature of standard along movement line of second thermal energy source and along line, perpendicular to line of movement of second point source of thermal energy in accordance to same algorithm as the one used for product. Thermo-physical properties, thickness of layers and porosity of metallic frame of ribbon material are determined with consideration of power of sources of energy, temperatures on movement line of energy sources, measured distances, values of temperatures set in advance, density of materials of upper layers and metal of frame in compact state.

EFFECT: expanded functional capabilities, increased control precision and expanded area of possible use.

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