Development of a new methodology capable of characterizing the contribution of a controlled venting system to impact attenuation in chamber structures for head protection

    Volume 6, Issue 1 (January 2009)

    ISSN: 1546-962X

    CODEN: JAIOAD

    Published Online: 20 January 2009

    Page Count: 8


    Lamb, L.
    University of Ottawa, Ontario, Ottawa

    Post, A.
    University of Ottawa, Ontario, Ottawa

    Hoshizaki, T. B.
    University of Ottawa, Ontario, Ottawa

    (Received 12 May 2008; accepted 20 October 2008)

    Abstract

    Currently, ice hockey helmet technologies are based mainly around foam energy absorbers. There is a need in the head protection industry for improved designs, capable of protecting the brain under a wide range of impact conditions. Air chambers are new, thin-walled collapsible energy absorber structures which have the potential to replace or to be used in conjunction with current helmet technology. The chambers consist of several engineering parameters, each of which needs to be examined to understand its mechanical response under impacts. This study was designed to investigate a new methodology capable of investigating the air venting system. This research thereby analyzed the role the chamber’s controlled air release device plays in managing impact energy. The results demonstrated that, as the air chamber approaches the critical failure region, the air released though the controlled vent can prevent larger peak forces. This research identified that an engineered thin-walled collapsible chamber does use air as a mechanism to absorb impacting force.


    Paper ID: JAI101884

    DOI: 10.1520/JAI101884

    ASTM International is a member of CrossRef.

    Author
    Title Development of a new methodology capable of characterizing the contribution of a controlled venting system to impact attenuation in chamber structures for head protection
    Symposium Fifth International Symposium on Safety in Ice Hockey, 2008-05-05
    Committee F08