ULTRASONIC METER FOR MEASURING CLEARANCES IN MULTI-LAYER STRUCTURES Russian patent published in 1997 - IPC

FIELD: measurement technology. SUBSTANCE: meter contains two-waveguide system acoustically aligned relative to each other by wave resistance and geometrically engageable by shape of contact surface forming concentrating acoustic system together with spherical piezoelectric radiator-receiver. Concentrating acoustic system compensates for scattering effect of object of measurement. One waveguide which is conical in shape is acoustically connected with radiator-receiver. Device may be used in nondestructive testing equipment, atomic engineering, mechanical engineering, aerospace industry, experimental technique. EFFECT: enhanced accuracy of measurement and extended range of application. 2 dwg