Concepts for railroad vehicle-born instrumentation systems which measure wheel-rail loads and wheel position and angle-of-attack relative to the rail were identified and evaluated. A system which provided continuous measurement of lateral and vertical wheel loads, with an accuracy of plus or minus 2 percent of full scale load, and continuous measurement of wheel-rail angle-of-attack with plus or minus 0.5 milliradian (0.029 deg) accuracy was required. The work included a survey of current measurement concepts, the development of an evaluation procedure, the utilization of the procedure, and the development of suitable specifications. Six load measurement systems were considered, 5 based on instrumented wheel plates and one based on an instrumented axle and wheel bearing adapters. Four position measurement systems were evaluated, 2 based on contacting probes and 2 based on noncontacting probes. It was found that an instrumented wheel plate system must be utilized for wheel-rail force measurements if the desired performance standards are to be attained. It was also concluded that none of the wheel-rail position measurement systems would meet the desired performance characteristics.


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    Titel :

    Evaluation of Wheel-Rail Load and Position Measurement Concepts


    Beteiligte:
    R. P. Joyce (Autor:in) / M. R. Johnson (Autor:in)

    Erscheinungsdatum :

    1982


    Format / Umfang :

    46 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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