A frequency response function, between an external structural excitation signal and the resulting acoustical signal at a location inside the vehicle, was measured on 98 'identical' Isuzu Rodeos and 57 'identical' Isuzu pickup trucks. A similar frequency response function was measured for an external acoustical excitation signal. Significant effort was made to control measurement variability. The air temperature and humidity inside the test vehicle were measured but not controlled. A record was kept of the tests conducted on the first vehicle for each vehicle type (designated as the reference vehicle) over the natural variation of environmental factors. The frequency response functions of the reference vehicle varied by approximately 4 - 8 dB over the frequency range 40 - 500 Hz for the structural excitation functions and also by 4 - 8 dB over the 150 to 1000 Hz frequeny range for the acoustical excitation functions because of measurement and environmental variations. The frequency response functions for the entire measurement set varied by as much as 10 - 20 dB over the same frequency range.


    Access

    Access via TIB

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Variation of structural-acoustic characteristics of automotive vehicles


    Additional title:

    Variation von strukturakustischen Charakteristiken von Kraftfahrzeugen


    Contributors:

    Published in:

    Publication date :

    1996


    Size :

    7 Seiten, 10 Bilder, 4 Tabellen, 3 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




    Measurement of the statistical variation of structural-acoustic characteristics of automotive vehicles

    Kompella,M.S. / Bernhard,R.J. / Purdue Univ.,West Lafayette,US | Automotive engineering | 1993


    Measurement of the Statistical Variation of Structural-Acoustic Characteristics of Automotive Vehicles

    Kompella, Murty S. / Bernhard, Robert J. | SAE Technical Papers | 1993



    Active vibro-acoustic of automotive vehicles

    Alves, G.S. / Shoureshi, R. / Knurek, T. et al. | Tema Archive | 1994


    Acoustic response variability in automotive vehicles

    Hills, E. / Mace, B.R. / Ferguson, N.S. | Tema Archive | 2009