Effects of moisture absorption on the dynamic interlaminar fracture toughness of carbon/epoxy composites

Mitsugu Todo, Takashige Nakamura, Kiyoshi Takahashi

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    61 Citations (Scopus)

    Abstract

    Effects of moisture absorption on the dynamic mode II interlaminar fracture behavior of two different kinds of carbon/epoxy composites at a low impact rate of 0.9 m/s were studied. ENF specimens were preconditioned under three different environmental conditions, that is, dry, 80°C-90% RH and 80°C-wet. Mode II interlaminar fracture toughnesses, GIIC, of the composites were then evaluated under quasi-static and dynamic loading. The results showed that moisture absorption had an influence on the GIIC values of the composites. The experimental results also exhibited that the impact loading condition tended to decrease the GIIC values. Scanning electron micrography was also performed to characterize the micromechanisms of mode II interlaminar fracture. Effects of moisture absorption on the mode II interlaminar fracture behavior were then discussed on the basis of the results of the interlaminar fracture testing and microscopic studies.

    Original languageEnglish
    Pages (from-to)630-648
    Number of pages19
    JournalJournal of Composite Materials
    Volume34
    Issue number8
    DOIs
    Publication statusPublished - 2000

    All Science Journal Classification (ASJC) codes

    • Ceramics and Composites
    • Mechanics of Materials
    • Mechanical Engineering
    • Materials Chemistry

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