Volume 23, Issue 4 (October 2001)

    Energy Absorption of Truncated Kevlar Epoxy Cones Under Off-Axis Loads

    (Received 1 November 1999; accepted 8 June 2001)

    CODEN: CTROAD

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    Abstract

    A total of 27 Kevlar/epoxy truncated cones was manufactured and crushed under off-axis loads. Side loads were introduced by cutting the cones at angles relative to their central axes. The failure modes were observed, and the specific sustained crushing stresses were determined and compared against graphite/epoxy cones of the same lay-up and similar geometry. The Kevlar/epoxy cones exhibited significantly different failure modes than the graphite/epoxy cones. Specifically, the cones did not experience brittle fracture, and thus maintained structural integrity after crushing. The Kevlar/epoxy cones were less sensitive to the angle of the applied load than similar graphite/epoxy cones; however, the energy absorbed per unit mass is significantly lower. The role of specimen taper and load inclination is different than that for graphite/epoxy cones. In particular, 10° tapered cones overall had the best performance even under uniaxial loading conditions.


    Author Information:

    Vizzini, AJ
    Graduate research assistant and associate professor, University of Maryland, College Park, MD

    Knack, JL
    Graduate research assistant and associate professor, University of Maryland, College Park, MD


    Stock #: CTR10997J

    ISSN: 0884-6804

    DOI: 10.1520/CTR10997J

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    Author
    Title Energy Absorption of Truncated Kevlar Epoxy Cones Under Off-Axis Loads
    Symposium , 0000-00-00
    Committee D30