METHOD FOR AUTOMATED ULTRASONIC INSPECTION OF FLAT ARTICLES Russian patent published in 2015 - IPC G01N29/04 

FIELD: physics.

SUBSTANCE: method includes scanning flat articles with an ultrasonic transducer in two mutually perpendicular directions: back-and-forth across and discrete rectilinear along the inspected article. A thick-walled inspected article is scanned with multiple ultrasonic transducers mounted in a single acoustic unit in one row equidistant from each other and fitted with separate clamps to the surface of the inspected article which provide them with three degrees of freedom when scanning, wherein scanning of the acoustic unit along the inspected article is carried out with alternating odd short and even long steps, after which the actual longitudinal coordinates of the detected defects are determined as the sum of current coordinates of the first transducer and the distance between the centres of the first transducer and the transducer which detected the defect.

EFFECT: more reliable inspection, avoiding a dead inspection zone, rejection of flat articles and missing defects.

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