Traditionally, headliners for improved acoustics have concentrated on absorbing sound generated within the vehicle. In-car testing has shown that the most effective constructions combine interior noise absorption with dampening of roof vibration. Technology has been developed which provides better dampening of roof vibration than the combination of a traditional headliner and dampening pad. Benefits of eliminating a separate dampening pad include guaranteed roof contact for long term roof dampening and the elimination of a separate labor intensive operation.In-car acoustic excitation and structural excitation tests demonstrated the benefit of this technology. Road testing in a Mercury Topaz showed that, while the full benefit of this technology may not be fully realized in all vehicles, the good acoustical performance of fiberglass headliners can be matched or exceeded with FSL headliner designs which offer more styling flexibility and toughness during installation. This technology can be used to tailor headliners for the cost performance required for various car sizes and models.This paper discusses the details of 1) comparative noise levels recorded during acoustic and structural excitation tests, and 2) comparative noise levels recorded during Topaz road tests.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Headliners Designed to Dampen Roof Vibration


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    SAE International Congress and Exposition ; 1987



    Publication date :

    1987-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Headliners Designed to Dampen Roof Vibration

    Kostelnik,R.J. / Brant,A.L. / Battle,K.J. et al. | Automotive engineering | 1987


    Headliners - Molded Fiberglass

    Horton, G. A. | SAE Technical Papers | 1971


    Automotive Headliners: Methods and Trends

    Mazzoni, Bruce C. | SAE Technical Papers | 1987


    Process for manufacturing vehicle headliners

    GRANDE COLLADO MIGUEL ÁNGEL / MERINO ROJO FRANCISCO JAVIER | European Patent Office | 2018

    Free access

    Slim vacuum cleaner that can dampen vibration and noise

    European Patent Office | 2023

    Free access