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    Volume 6, Issue 4 (December 1984)

    Fracture Modes Identification of Composite Materials by Acoustic Emission Analysis

    CODEN: CTROAD

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    Abstract

    Acoustic emission technique was used to monitor the failure modes of multidirectional composite laminates when loaded to 30% of their ultimate. It is shown that each failure mode, that is, fiber fracture, in-plane cracking, and interlaminar cracking, has a different amplitude function when it is presented by normalized parameters. But the discrimination between in-plane matrix cracking and interlaminar matrix cracking is not clear, and another tool is used to discriminate between them, the variation of ring-down period with pulse length. Penny shape artificial delamination also produces unique amplitude distribution that has a smaller slope than the amplitude distribution from free-edge delamination.


    Author Information:

    Rotem, A
    Associate professor, Faculty of Mechanical Engineering, Technion—Israel Institute of Technology, Haifa,


    Stock #: CTR10836J

    ISSN: 0884-6804

    DOI: 10.1520/CTR10836J

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    Author
    Title Fracture Modes Identification of Composite Materials by Acoustic Emission Analysis
    Symposium , 0000-00-00
    Committee D30