Correlations Between Ultrasonic Waveforms and Artificially Implanted Defects in Composite Materials

    Volume 12, Issue 1 (March 1990)

    ISSN: 0884-6804

    CODEN: CTROAD

    Page Count: 6


    Schuster, J
    Graduate student, Rheinisch-Westfälische-Technische-Hochschule,

    Steiner, KV
    Research associate II, Center for Composite Materials, University of Delaware, Newark, DE

    Abstract

    This paper presents the results of ultrasonic testing, in particular pulse-echo scans and full waveform scans, performed on composite test specimens. Defects, such as backing paper, excess resin, Teflon®, sand, acetone, and Frekote® spray are implanted artificially in samples manufactured from carbon fiber prepregs. Cracks and delaminations are generated by impact and bending tests. The specimens are scanned in order to find correlations between these defects and their displayed images. Finally, the cut specimens are analyzed under the microscope.


    Paper ID: CTR10177J

    DOI: 10.1520/CTR10177J

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    Author
    Title Correlations Between Ultrasonic Waveforms and Artificially Implanted Defects in Composite Materials
    Symposium , 0000-00-00
    Committee D30