Volume 5, Issue 2 (July 1983)

    On the Off-Axis Tension Test for Unidirectional Composites

    CODEN: CTROAD

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    Abstract

    The off-axis tension test was examined experimentally to obtain actual displacement fields over the surface of graphite-polyimide coupon specimens; the experimental results were compared with the approximate analytical solution of Pagano and Halpin and newly generated finite-element results. A new optical method of high-sensitivity moiré interferometry was used to determine the actual displacements to high precision. It is shown that the approximate analytical solution and the finite-element results compare very favorably with the measured centerline displacements in the test section, and the finite-element displacement fields provide excellent agreement with the moiré displacements throughout the specimen. Results are presented for a 15° fiber orientation and coupon aspect ratios of 5 and 15.


    Author Information:

    Herakovich, CT
    Graduate student and professor, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Post, D
    Graduate student and professor, Virginia Polytechnic Institute and State University, Blacksburg, VA

    Nemeth, MP
    Graduate student and professor, Virginia Polytechnic Institute and State University, Blacksburg, VA


    Stock #: CTR10794J

    ISSN: 0884-6804

    DOI: 10.1520/CTR10794J

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    Author
    Title On the Off-Axis Tension Test for Unidirectional Composites
    Symposium , 0000-00-00
    Committee D30