The tear seam of invisible passenger side airbag door is made on the back of an instrument panel by laser scoring method and it is not shown outside. One of the requirements for the invisible passenger side airbag door is that the airbag module should deploy with no fragmentation at hot, room and cold temperature conditions. In this paper, a section model was developed by detail inspection of tearing phenomena, at the laser-scored region. To validate the model, the finite elements of continuous and dot type laser-scored tear seam were built and analyzed in room and cold temperature conditions. Finally, a three-dimensional equivalent shell model was developed and it was proved that the section model and the equivalent shell model could represent well the tearing phenomena of the airbag door. It is expected that the tearing pattern prediction models developed in this study can be used to design the types of laser scoring and the airbag door with the minimum of real deployment tests.


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    Title :

    Development of tearing pattern prediction model of laser scored region on invisible passenger side airbag door


    Additional title:

    Entwicklung eines prädiktiven Rissmustermodells des laserstrahlbearbeiteten Bereiches in einem unsichtbaren beifahrerseitigen Tür-Airbag


    Contributors:
    Lee, K. (author) / Yeo, T. (author) / Park, S. (author)


    Publication date :

    2003


    Size :

    6 Seiten, 14 Bilder, 3 Tabellen, 6 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English






    2003-01-1018 Development of Tearing Pattern Prediction Model of Laser Scored Region on Invisible Passenger Side Airbag Door

    Lee, K. / Yeo, T. / Park, S. et al. | British Library Conference Proceedings | 2003


    Finite Element Analysis of Tearing Patterns for Laser Scored Region of Invisible Passenger Side Airbag Door (20025313)

    Lee, K. / Yeo, T. / Park, S. et al. | British Library Conference Proceedings | 2001