A method for the measurement and analysis of ride vibrations of transportation systems
John J. Catherines, Sherman A. Clevenson, Harland F. Scholl, Langley Research Center, United States. National Aeronautics and Space Administration
National Aeronautics and Space Administration, 1972 - Science - 60 pages
The measurement and recording of ride vibrations which affect passenger comfort in transportation systems and the subsequent data-reduction methods necessary for interpreting the data present exceptional instrumentation requirements and necessitate the use of computers for specialized analysis techniques. A method is presented for both measuring and analyzing ride vibrations of the type encountered in ground and air transportation systems. A portable system for measuring and recording low-frequency, low-amplitude accelerations and specialized data-reduction procedures are described. Sample vibration measurements in the form of statistical parameters representative of typical transportation systems are also presented to demonstrate the utility of the techniques.
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