Method of and an apparatus for in situ ultrasonic rail...

Details Method of and an apparatus for in situ ultrasonic rail... Method of and an apparatus for in situ ultrasonic rail...

G - Physics

01

N

G01N 29/04 (2006.01) B61K 9/08 (2006.01) G01M 17/03 (2006.01)

Patent

CA 2722861

An ultrasonic railroad rail inspection system, apparatus and method for in situ rail inspection including a wheel assembly containing a fluid-filled tire and an ultrasonic transducer mounted within the wheel assembly. The transducer is supported in the tire such that the ultrasonic beam generated by the transducer has a beam axis that intersects a head of a railroad rail at a position offset from the longitudinal median plane of the rail to the side of the head penetrated by the ultrasonic beam. The ultrasonic beam is reflected by flaws in the rail in the form of echoes. The echoes return to the transducer identifying the location of flaws.

La présente invention concerne un système, un appareil et un procédé dinspection in situ par ultrasons de rails de voie ferrée comprenant un ensemble de roue contenant un pneumatique rempli de fluide et un transducteur monté à lintérieur de lensemble de roue. Le transducteur est maintenu dans le pneumatique de sorte que le faisceau ultrasonore généré par le transducteur présente un axe de faisceau qui intersecte la tête dun rail de voie ferrée à une position décalée depuis le plan médian de laxe longitudinal du rail vers le côté de la tête pénétré par le faisceau ultrasonore. Le faisceau ultrasonore est réfléchi par des défauts dans le rail sous forme déchos. Les échos sont réfléchis vers le transducteur identifiant lemplacement des défauts.

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