Effects of Stacking Sequences on Mechanically Fastened Joint Strength in Quasi-Isotropic Carbon-Epoxy Laminates

    Volume 17, Issue 3 (July 1995)

    ISSN: 0884-6804

    CODEN: CTROAD

    Page Count: 11


    Hamada, H
    Kyoto Institute of Technology, Kyoto,

    Haruna, K
    Kyoto Institute of Technology, Kyoto,

    Maekawa, Z
    Kyoto Institute of Technology, Kyoto,

    Abstract

    The desire to develop adequate strength, particularly at bolt hole, tends to restrict the choice of fiber patterns to those that do not deviate very far from a quasi-isotropic pattern. The weakest parts of a composite structure are the joint parts; therefore, the effective stacking sequences on joint strength while maintaining the isotropic nature have to be cleared. In this study, the effect of stacking sequences on quasi-isotropic T300/2500 joint strength was examined. Two joint geometries that exhibited bearing failure and net-tension failure under pin-bearing loads were chosen. Six types of laminate configurations were examined in quasi-isotropic patterns.

    According to observation failure mode and acoustic emission (AE) measurement, the evidence of the effect of stacking sequences was made clear. The highest bearing and net-tension strength obtained from the quasi-isotropic laminates tested all had 0° plies on the outer surfaces, 90° plies next to the 0° plies, and ±45° plies interspersed in the middle of the laminate [0°2/90°2(+45°/-45°)2]s.


    Paper ID: CTR10490J

    DOI: 10.1520/CTR10490J

    ASTM International is a member of CrossRef.

    Author
    Title Effects of Stacking Sequences on Mechanically Fastened Joint Strength in Quasi-Isotropic Carbon-Epoxy Laminates
    Symposium , 0000-00-00
    Committee D30