Tyre-road noise emission decreases when the outdoor temperature increases, with a variation that can exceed -0.1 dB(A)/degree C. This effect depends on tyre-road combination, but semi-generic corrections can improve the accuracy of tyre-road noise measurements. In this paper, the variation of pass-by noise level of a passenger car at 90 km/h with temperature is investigated, on seven types of road surfaces, under different temperature conditions. A good correlation between air, road surface and tyre temperature is outlined. A linear relationship between noise level and air temperature variations is observed for bituminous pavements, of about -0.1 dB(A)/degree C, but reduced to -0.06 dB(A)/degree C for pavements having porosity. No temperature effect is observed on cement concrete pavements. A spectral analysis shows that the temperature effect is highest in low and high frequency range, what can be explained by generating mechanisms rather than propagation.


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    Title :

    Temperature effect on tyre-road noise


    Additional title:

    Einfluss von Temperatur und Straßenbelag auf Reifengeräusche


    Contributors:

    Published in:

    Applied Acoustics ; 68 , 1 ; 1-16


    Publication date :

    2007


    Size :

    16 Seiten, 9 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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