Effects of crack velocity and acceleration on dynamic stress intensity factor of epoxy

Kazuo Arakawa, Daisuke Nagoh, Kiyoshi Takahashi

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    1 Citation (Scopus)

    Abstract

    Dynamic crack propagation in epoxy specimens was studied using the method of caustics in combination with a Cranz-Schardin high-speed camera. Single-edge-cracked tensile specimens were fractured under pin-loading conditions so that cracks could undergo acceleration, deceleration and re-acceleration stages in one fracture process. Dynamic stress intensity factor KID, crack velocity a and acceleration a were evaluated in the course of crack propagation to examine the effects of a and a on KID. Results showed that a and a strongly affected the values of KID, and for a constant a the decelerating crack had a larger value of KID than the accelerating or re-accelerating crack. Also, it was found that KID could be expressed as two parametric functions of a and a for epoxy specimens.

    Original languageEnglish
    Pages (from-to)21-25
    Number of pages5
    JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
    Volume63
    Issue number605
    DOIs
    Publication statusPublished - 1997

    All Science Journal Classification (ASJC) codes

    • General Materials Science
    • Mechanics of Materials
    • Mechanical Engineering

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