Measurement of Crack Opening Displacement in Mode I Interlaminar Fracture of CFRP by Moire Interferometry

Kazuo Arakawa, Masatsuka Ishiguma, Kiyoshi Takahashi

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    Abstract

    Mode I interlaminar fracture was studied using double cantilever beam (DCB) specimens of unidirectional carbon fiber/epoxy composites. Moire interferometry was employed to measure crack opening displacement (COD) in the vicinity of a crack tip. Measured values of COD were compared with those theoretically obtained. It was found that the slope at the beam root of the specimens plays an important role in increasing the values of COD. Fracture toughness GI was evaluated by two kinds of methods, and the results were compared with those of the COD measurement.

    Original languageEnglish
    Pages (from-to)553-557
    Number of pages5
    JournalTransactions of the Japan Society of Mechanical Engineers Series A
    Volume59
    Issue number559
    DOIs
    Publication statusPublished - 1993

    All Science Journal Classification (ASJC) codes

    • General Materials Science
    • Mechanics of Materials
    • Mechanical Engineering

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