The report presents an inventory or 'catalog' of peak A-weighted sound levels measured during an extensive parametric study conducted to characterize the noise generated by typical rib, cross-bar and retread type truck tires. A test sample of nine tread designs, estimated to represent 70-80% (these exact designs) of the truck tire population on the road today, was investigated considering the following variables: wear, loading, speed, pavement surface, and tire location. Test vehicles included both single-chassis vehicles and a tractor-trailer. The results show that the A-weighted sound level increased with either an increase in load or speed. The 'pocket retread' design always produced the highest level followed by the cross-bar tires and then the rib tires. This ranking held for both new and half-worn tires. The influence of wear and pavement surface is more complex. For all of the tread designs except one there was an increase in noise level between the new and half-worn states. The results for different pavement surfaces are much the same as with wear in that the generated noise appears to depend on both the specific tread design and the surface roughness. Individual tires do contribute differently to the overall level depending on their location on the vehicle. In some cases, significant reductions in the noise level were observed when 'noisy' tires were mounted inboard of 'quieter' tires. The report includes a discussion of the measurement and analysis techniques utilized for the establishment of this data base. (Author)


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    Title :

    Truck Tire Noise-I. Peak A-Weighted Sound Levels Due to Truck Tires


    Publication date :

    1970


    Size :

    250 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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