METHOD FOR HIGH-SPEED DETAILED ULTRASONIC INSPECTION OF RAILS Russian patent published in 2012 - IPC G01N29/04 

FIELD: physics.

SUBSTANCE: transverse ultrasonic oscillations are radiated from the roll surface of the rails using main ultrasonic transducers placed on given main radiation points on the longitudinal axis of the rail, receiving the reflected ultrasonic oscillations and measuring parameters thereof, analysis results of which determine presence of defects, where simultaneously with emission of radiation from the main points, ultrasonic oscillations are radiated from additional radiation points using additional ultrasonic transducers, each placed lying at a distance L from the corresponding main ultrasonic transducer, selected using the expression L=(2n-1)N, where N is the scanning pitch and n is a natural number from 3 to 100, where during joint analysis of ultrasonic oscillations received by the main and additional ultrasonic transducers, ultrasonic oscillations received by the corresponding additional ultrasonic transducers are corrected, which provides difference in position along the longitudinal axis of the rail of the main and the corresponding additional ultrasonic transducers equal to L-N.

EFFECT: high speed of ultrasonic inspection of rails while maintaining accuracy thereof.

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