As track components deteriorate, their interaction dynamic response will alter accelerations on the train. Measuring acceleration on train components is a method to conduct condition monitoring of track defects. The measured signal can be used for the detection of rail surface defects which implement impacts on measured accelerations. In this paper, the axle-box acceleration (ABA) is measured in a subway as a case study. Fourier transform (FFT), empirical mode decomposition (EMD) and ensemble EMD (EEMD) methods are used to study accelerations relative to the track. Wheel frequencies are calculated using finite element method (FEM) to determine frequency couplings. Velocity-dependent/independent components and source of excitation of the measured signal are distinguished. Results indicated that the FFT approach can be applied for both velocity-dependent and velocity-independent vibration components for frequencies up to 680 Hz. Also, the EEMD method can be used to distinguish the impact component of the measured signal.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Detection of rail local defects using in-service trains


    Beteiligte:


    Erscheinungsdatum :

    01.10.2022


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch





    SYNCHRONIZED EXPRESS AND LOCAL TRAINS FOR URBAN COMMUTER RAIL SYSTEMS

    CHUN JOONG H | Europäisches Patentamt | 2016

    Freier Zugriff


    Braking Trains on Queensland Rail

    Payne, B. / Air Brake Association | British Library Conference Proceedings | 2001


    Rail logistics favor big trains

    Tierney, J. | Engineering Index Backfile | 1963