This paper reports the development and testing of two independent, innovative techniques for measuring rail displacements. One system combines remote video monitoring with particle image velocimetry, using a webcam and a small telescope. The second uses sleeper mounted geophones that give a voltage output proportional to the velocity of motion, which can be filtered and integrated to calculate displacements. Laboratory validation tests show that the video monitoring system can measure peak-to-peak displacements to within 0.04 mm from a distance of 15 m for frequencies less than 4 Hz. The geophones measure peak-to-peak displacements to within 0.07 mm for frequencies as low as 1 Hz. Data from three different standards of railway track and/or train speeds are used to explore and quantify the limitations of each system in the field.


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    Title :

    Monitoring the dynamic displacements of railway track


    Additional title:

    Messung des dynamischen Bewegungen von Bahngleisen


    Contributors:
    Bowness, D. (author) / Lock, A.C. (author) / Powrie, W. (author) / Priest, J.A. (author) / Richards, D.J. (author)


    Publication date :

    2007


    Size :

    10 Seiten, 10 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Monitoring the dynamic displacements of railway track

    Bowness, D. / Lock, A. C. / Powrie, W. et al. | British Library Online Contents | 2007


    Monitoring the dynamic displacements of railway track

    Bowness, D. | Online Contents | 2007


    Monitoring the dynamic displacements of railway track

    Bowness, D / Lock, A C / Powrie, W et al. | SAGE Publications | 2007


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