High-speed ACFM tests were carried out using a rotary test piece that contained spark-eroded notches. The ACFM sensor detected the induced notches during inspection at 121.5 km/h. The recorded signal remained unaffected by the increases in inspection speed under constant lift-off. To simulate actual rail inspection conditions at high speed, further tests were carried out using a spinning rail rig and a set of rails that contained spark-eroded notches of various shapes and sizes up to a speed of 32 km/h. Although, the ACFM sensor successfully detected the majority of the notches, the signal obtained was affected by lift-off variations.


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    Title :

    High-speed inspection of rails using ACFM techniques


    Additional title:

    Hochgeschwindigkeitsprüfung von Schienen mittels ACFM-Technik


    Contributors:
    Papaelias, M.P. (author) / Lugg, M.C. (author) / Roberts, C. (author) / Davis, C.L. (author)

    Published in:

    NDT&E International ; 42 , 4 ; 328-335


    Publication date :

    2009


    Size :

    8 Seiten, 15 Bilder, 25 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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