Energy absorbing characteristics of GF/Nylon tubes - effect of trigger geometry and testing speed on energy absorption

Hiroyuki Kawada, Takeshi Honda, Maiko Takashima, Hajime Satoh

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    In this paper, compression tests in GF/Nylon6 tubes were performed to clarify the mechanism of the initial failure process and the characteristic of the energy absorption. It was found that all the specimens were crushed in a progressive crushing mode regardless of the trigger geometry, but that the specimens with an asymmetric trigger demonstrated to have a better energy absorbing characteristic than that with a symmetric one. The formation mechanism of the debris-wedge was examined through the step-wise morphology analysis. It was also found that changes in the trigger geometries affected the performance of the initial failure process which was characterized by the debris-wedge formation process. As for an effect of testing speed on the specific energy absorbing capability, the GF/Nylon6 tubes had small dependency of the testing speed in the range of our study comparing CF/PPEK tubes. From those results, it could be concluded that the GF/Nylon6 tubes are available to practical use.

    Original languageEnglish
    Pages (from-to)458-463
    Number of pages6
    JournalZairyo/Journal of the Society of Materials Science, Japan
    Issue number5
    Publication statusPublished - 1998 May


    ASJC Scopus subject areas

    • Chemical Engineering (miscellaneous)
    • Metals and Alloys
    • Polymers and Plastics

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