On August 18, 1995 the National Highway Traffic and Safety Administration (NHTSA) invoked Federal Motor Vehiele Safety Standard (FMVSS) 201 U to provide protection when an occupant's head strikes upper interior components such as side rails, front headers and the roof during a crash. Subject to the phase-in requirements of FMVSS 201 U, all vehicles manufactured after September 1, 2002 will be required to satisfy the head injury criteria (HIC) requirements of FMVSS 201 U. Automotive OEM's are now equipping upper interior components such as headliners with foam, structural thermoplastic components, or structural composite countermeasures to manage energy during simulated head impact crash tests. For most small, midsize and luxury car platforms, automotive OEM's are now offering optional features such as powered sunroofs and integrated air bag curtains on most coupe and sedan models. With these options available on most passenger cars today, as many as eight discrete headliners may need to be designed. The challenge facing automotive OEM's lies in using unique energy absorbing (EA) countermeasure designs with a common headliner substrate surface without increasing the cost or investrnent while maintaining optimal head impact performance. This paper will discuss how high efficiency polypropylene foam headliner countermeasure part designs can be simplified without the need for costly tooling associated with injection molded ribbed cartridges, molded polyurethane foams and steam chest molded expanded bead foam parts. An advanced component-level headliner countermeasure test methodology will be discussed in addition to the statistical analysis of such tests performed with EA countermeasures.


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    Titel :

    Simplified high efficiency polypropylene foam part designs for automotive headliner countermeasure applications


    Weitere Titelangaben:

    Vereinfachter Entwurf hocheffizienter Polypropylenschaumstoff-Fahrzeugbauteile zum Einsatz als Schutz gegen Kopfverletzungen


    Beteiligte:
    Maurer, M. (Autor:in) / Tusim, M. (Autor:in) / Lemmon, J. (Autor:in) / Williams, S. (Autor:in)


    Erscheinungsdatum :

    2002


    Format / Umfang :

    21 Seiten, 22 Bilder, 2 Tabellen, 8 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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