METHOD OF NONDESTRUCTIVE TESTING OF SURFACE Russian patent published in 1997 - IPC

FIELD: measurement of physical parameters and state of surface of object. SUBSTANCE: given method includes action with optical radiation in the form of band having length L and width 2a focused on surface of object, movement of band over surface of object and registration of temperature in form of band in path of movement at distance α = c•a, where c is coefficient lying within limits 1...2. Measurement of temperature can be conducted at different distances α from center of band lying within range a<d<2a simultaneously. EFFECT: enhanced functional efficiency of method. 2 cl, 1 dwg