Volume 24, Issue 1 (January 1996)

    Robust Design of the Iosipescu Shear Test Specimen for Composites

    (Received 18 October 1994; accepted 14 September 1995)

    CODEN: JTEOAD

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    Abstract

    For the purpose of improving the accuracy of the Iosipescu shear test method, researchers have been interested in analyzing the uniformity of shear stress distribution along the notched cross section for different design configurations of specimens made of various materials. But a one-factor-at-a-time approach cannot lead to a full understanding of the shearing behavior. The statistical design of experiments based on finite element models is employed here to characterize impacts of main effects and interactions among various design factors on the uniformity of shear stress distribution along the notched cross section for two kinds of unidirectional laminae with different orthotropy: Boron/Al (boron-fiber-reinforced aluminum) and Gl/Epoxy (glass-fiber-reinforced epoxy). It is shown that (a) the notch radius and height of a specimen are significant factors, (b) the notch angle is also significant, and 90° is better than 110° in reducing the variation of shear stress distribution, and (c) some two-factor interactions are influential.


    Author Information:

    Chiang, YJ
    Consultant, Robust Engineering Co., Novi, MI


    Stock #: JTE11282J

    ISSN: 0090-3973

    DOI: 10.1520/JTE11282J

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    Author
    Title Robust Design of the Iosipescu Shear Test Specimen for Composites
    Symposium , 0000-00-00
    Committee D30