Application of Ultrasonic Method for Non-Contact Control of External Defects of Metal Surfaces

The paper considers a non-contact method of controlling external defects of metal surfaces. The differential method of processing information obtained by ultrasonic echo-method from different measuring channels is used. Mathematical modelling of offered method has demonstrated its practical application. The structure of intelligent measuring device was proposed, a schematic diagram was developed and a prototype of the sensor was assembled. Tests have proved possibility of determining of small defects of metal surfaces.