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    Auotmatic laser ultrasonics for rail inspection

    Auotmatic laser ultrasonics for rail inspection


    This paper presents the state of the current activities to develop a high-speed inspection system for evaluating rail defects. Since conventional contact ultrasonic techniques are speed limited, the aim was to build an automatic inspection system, which applies non-contact ultrasonic methods. An automatic Laser Ultrasonic system for Rail Inspection (LURI) has been developed and tested on a railroad line containing man-made structural defects. LURI is mounted on a specially designed railroad vehicle and allows detection of defects on the running surface of the rail, as well as horizontal and vertical flaws in the railhead. At present, LURI provides rail integrity information up to speed of 40 km/h (25 mph) interrogating both the running surface and the body of the head of the rail. Several critical rail defects were found and identified during the field test of the LURI-system. The results of the test confirm appropriateness of the developed concept of rail flaw detection and open up possibilities for further development.

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    Titel :

    Auotmatic laser ultrasonics for rail inspection

    Weitere Titelangaben:

    Automatische Schienenprüfung mit Laser-Ultraschall

    Beteiligte:
    Nielsen, S.A. (Autor:in) / Bardenshtein, A.L. (Autor:in) / Thommesen, A.M. (Autor:in) / Stenum, B. (Autor:in)
    Erschienen in:

    WCNDT, World Conference on Nondestructive Testing, 16 ; 1-8

    Erscheinungsdatum :

    2004

    Format / Umfang :

    8 Seiten, 6 Bilder, 4 Quellen

    Anmerkungen:

    (Nicht paginiert)

    Medientyp :

    Aufsatz (Konferenz)

    Format :

    Datenträger

    Sprache :

    Englisch

    Schlagwörter :

    zerstörungsfreie Prüfung , Ultraschallprüfung , automatische Prüfung , photoakustische Schallerzeugung , Laserabtasten , hohe Geschwindigkeit , Inspektionssystem , Eisenbahnschiene , Fehlernachweis

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