Fracture behavior of aramid/epoxy composite with a circular hole subjected to compressive load

Hiroyuki Kawada, Tomohiro Watanabe, Takeshi Honda

    Research output: Contribution to journalArticle

    3 Citations (Scopus)

    Abstract

    In this paper, a method for predicting compressive strength of notched AFRP (Aramid Fiber Reinforced Plastics) is proposed. The compression tests are performed with an end-tab compression method based on the NASA/ Boeing standards. In the experimental procedure, both unidirectional and woven cloth AFRP specimens show the hole radius dependency of the compressive strength. It is also found that the failure modes can be classified by two failure criteria. Therefore, each failure criterion is applied to predict the compressive strength for each failure mode. A fracture simulation is carried out using FEM to predict the compressive strength of the notched AFRP. Fiber micro-buckling is represented by variation of the stiffness of the element at the elastic-plastic stage. The Tsai-Hill law is applied as a yielding criterion, and the maximum compressive strain theory is applied for fracture criterion. The load-displacement curve and compressive strength of the unidirectional AFRP are well simulated. On the other hand, it is found that the woven cloth AFRP is simulated only in the initial failure process. It can be concluded that the proposed fiber micro-buckling model is appropriate to explain the complicated buckling mechanism of laminated composites.

    Original languageEnglish
    Pages (from-to)166-172
    Number of pages7
    JournalMaterials Science Research International
    Volume2
    Issue number3
    Publication statusPublished - 1996 Sep

    Fingerprint

    Aramid fibers
    Fiber reinforced plastics
    Compressive strength
    Composite materials
    Buckling
    Failure modes
    Fibers
    Laminated composites
    NASA
    Loads (forces)
    Stiffness
    Kevlar Aramid fibers
    Plastics
    Finite element method

    Keywords

    • Aramid fiber
    • Composite materials
    • Compressive strength
    • Fracture mechanism
    • Simulation

    ASJC Scopus subject areas

    • Materials Science(all)

    Cite this

    Fracture behavior of aramid/epoxy composite with a circular hole subjected to compressive load. / Kawada, Hiroyuki; Watanabe, Tomohiro; Honda, Takeshi.

    In: Materials Science Research International, Vol. 2, No. 3, 09.1996, p. 166-172.

    Research output: Contribution to journalArticle

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