STP907

    Fracture of Thick Graphite/Epoxy Laminates with Part-Through Surface Flaws

    Published: Jan 1986


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    Abstract

    An experimental investigation of the fracture behavior of tension specimens containing part-through semi-elliptic surface flaws was conducted utilizing T300/5208 graphite/epoxy laminates with a [0/±45/90]10s stacking sequence. The notched strength of the specimens was found to be influenced by the flaw aspect ratio as well as flaw depth. Using a value of fracture toughness previously obtained for this material system, linear elastic isotropic fracture mechanics predicted the influence of the flaw shape and size on the notched strength.

    Keywords:

    fracture of composites, thick laminates, part-through surface flaws, graphite/epoxy laminate


    Author Information:

    Harris, CE
    Assistant professor, Texas A&M University, College Station, TX

    Virginia Polytechnic Institute and State University, Blacksburg, VA

    Morris, DH
    Professor, Virginia Polytechnic Institute and State University, Blacksburg, VA


    Paper ID: STP19982S

    Committee/Subcommittee: D30.04

    DOI: 10.1520/STP19982S


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