METHOD OF PERMANENT CONTROL OF THICKNESS OF LAYERS AND POROSITY OF METALLIC FRAME OF FOUR-LAYER METALLIC-FLUOROPLASTIC BELT MATERIAL Russian patent published in 2006 - IPC G01B7/06 G01N25/00 

FIELD: measuring technique.

SUBSTANCE: method comprises measuring change in voltages at the shield measuring and secondary winding of the inductor with respect to the voltages at the shield reference coil and secondary winding of the reference inductor. The thickness of the third porous metallic frame is assumed to be a difference between the thickness of the three-layer metallic belt measured by means of inductive micrometer and the thickness of two-layer bimetallic base. The measurements of porosity of the metallic frame and forth fluoroplastic layer is carried out by means of local heating of the surface of the belt material. The temperature at the center of the belt and a point of the surface of the belt material from the back side in front of the belt affected by heat are measured. The porosity of the metallic frame and thickness of the fourth layer are judged by the values of power of heat flux from the source of heat energy, material conductivity, and values of temperature and thickness of the layers.

EFFECT: enhanced efficiency and expanded functional capabilities.

2 dwg