Electromagnetic acoustic transducers (EMATs) are non-contact ultrasonic transducers capable of generating wide band ultrasonic surface waves on metallic samples. A lab-based laser-EMAT system has been developed to observe the ultrasonic surface wave propagation and interaction with surface breaking defects on the sample rail head surface. A wide band EMAT generating surface waves with a frequency content between approximately 50 and 500 kHz is used to propagate ultrasonic waves on the surface of a rail head down the length of the sample. A stabilised Michelson interferometer is used to measure the out-of-plane displacement of the surface wave. A complete picture of the ultrasonic surface wave on the sample surface over time is reconstructed using this technique, with exceptionally high spatial and temporal resolution. Despite the curvature of the rail head, the ultrasonic surface wave propagating down the rail is found to have similar properties to Rayleigh waves by direct comparison to those observed on flat samples using the same technique.


    Zugriff

    Zugriff über TIB

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Ultrasonic surface wave propagation and interaction with surface defects on rail track head


    Weitere Titelangaben:

    Ultraschall-Oberflächenwellen-Ausbreitung und Wechselwirkung mit Oberflächenrissen an Eisenbahn-Schienenköpfen


    Beteiligte:
    Fan, Y. (Autor:in) / Dixon, S. (Autor:in) / Edwards, R.S. (Autor:in) / Jian, X. (Autor:in)

    Erschienen in:

    NDT&E International ; 40 , 6 ; 471-477


    Erscheinungsdatum :

    2007


    Format / Umfang :

    7 Seiten, 7 Bilder, 1 Tabelle, 28 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




    Ultrasonic surface wave propagation and interaction with surface defects on rail track head

    Fan, Y. / Dixon, S. / Edwards, R.S. et al. | Tema Archiv | 2006


    Noncontact Ultrasonic Guided Wave Detection of Rail Defects

    Coccia, Stefano / Bartoli, Ivan / Salamone, Salvatore et al. | Transportation Research Record | 2009



    Identification of rail-surface irregularity for wheel/track interaction analysis

    Abe, K. / Suzuki, T. / Furuta, M. | British Library Conference Proceedings | 2000


    Numerical model of tram-track interaction with failures on rail surface

    Lakusic, S. / Rak, M. / Lazarevic, D. | British Library Conference Proceedings | 2004