Railway wheels are secured onto the axle by means of an interference fit. The wheel is either shrink fitted or press fitted onto a pre-lubricated axle, and the resulting interference fit induces a contact pressure at the interface. Occasionally railway axles fail by fatigue, with the initiation point for the failure frequently traced to the interference fit. In this study, the reflection of ultrasound was used to determine contact conditions in the interference fit. It is a non-intrusive technique preserving the mechanics of the contact. The concept is simple. An acoustic wave bounces back from an incomplete interface. The higher the contact load, the more conformal the contact and hence more of the wave will be transmitted. A spring model is used to determine maps of contact stiffness from ultrasonic reflection data. A calibration procedure is then used to determine the pressure. Two types of wheelsets were used for the measurements, both with a hollow axle that was used as an access point for the ultrasonic transducer. The wheels differed in the design of their web sections. Variations were detected in the determined interface pressure profiles, due to both surface roughness effects and discontinuities in the fit geometry. When comparing the two fits, it was found that material removal from the web of the wheel in the second fit reduced the interface pressure distribution.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Ultrasonic measurement of railway wheel hub-axle press-fit contact pressures


    Additional title:

    Ultraschallmessung von Presssitzverbindungen an Eisenbahnräderhohlachsen


    Contributors:
    Marshall, M.B. (author) / Lewis, R. (author) / Dwyer-Joyce, R.S. (author) / Demilly, F. (author) / Flament, Y. (author)


    Publication date :

    2011


    Size :

    12 Seiten, 15 Bilder, 16 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Ultrasonic measurement of railway wheel hub–axle press-fit contact pressures

    Marshall, M B / Lewis, R / Dwyer-Joyce, R S et al. | SAGE Publications | 2011


    Ultrasonic measurement of railway wheel hub-axle press-fit contact pressures

    Marshall, M.B. / Lewis, R. / Dwyer-Joyce, R.S. et al. | British Library Online Contents | 2011



    Hub/Axle Fit Pressures (Ultrasonic Characterisation of Wheel Hub/Axle Interference Fit Pressures)

    Marshall, M. B. / Lewis, R. / Dwyer-Joyce, R. S. et al. | British Library Conference Proceedings | 2004


    RAILWAY WHEEL, AND WHEEL AND AXLE FOR RAILWAY VEHICLE

    KUROSAKA RYUTA / KATO TAKANORI / MAKINO TAIZO et al. | European Patent Office | 2023

    Free access