A wheel flat is a common fault in railway vehicles that may develop after incorrect brake application, or localised wheel-rail adhesion reduction. Operators detect wheel flats using wayside systems that are not capable of delivering real-time alarms. A wheel flat defect was modelled and introduced to a railway wagon multibody dynamic simulation to study the vehicle dynamic behaviour triggered by such wheel tread defect. Bogie-based and car body-based wheel flat detection was evaluated to determine eventual hardware robustness and signal processing requirements for on-board wheel flat detection devices. Various vehicle operating conditionds and wheel flat defects were simulated to analyse the wheel flat impact propagation throughout the railway vehicle bodies. Wheel defect detectability was assessed using detectability indicators (DIs) based on envelope power spectrum analysis, crest factor and RMS. It was found that bogie and car body-based wheel flat detectability is highly dependent on the track characteristics. The wheel flat signature was reduced in the wheelset-bogie and bogie-car body interfaces, indicating that advanced signal processing techniques are required for bogie-based and car body-based wheel flat detection systems. The DIs showed clear differences between healthy and faulty wheelset and bogie frame acceleration signals, which is promising for eventual on-board wheel flat detection systems.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Wheel flat detectability for Y25 railway freight wagon using vehicle component acceleration signals


    Contributors:

    Published in:

    Vehicle System Dynamics ; 58 , 12 ; 1893-1913


    Publication date :

    2020-12-01


    Size :

    21 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    Unknown





    FREIGHT WAGON, SYSTEM, AND METHOD FOR MANAGING RAILWAY FREIGHT

    GANESAN MUNIANDI / SINGH JASVINDER / VARMA RAKESH et al. | European Patent Office | 2020

    Free access

    FREIGHT WAGON, SYSTEM, AND METHOD FOR MANAGING RAILWAY FREIGHT

    GANESAN MUNIANDI / SINGH JASVINDER / VARMA RAKESH et al. | European Patent Office | 2020

    Free access

    Reliability Analysis of Railway Freight Wagon Wheelset

    Spiroiu, M. A. | British Library Conference Proceedings | 2015


    Railway carriage and wagon wheel lathe

    Engineering Index Backfile | 1930