Analytical expressions for the energy release rate and mode-mixity phase angle are derived for a sandwich composite double-cantilever beam fracture specimen with the face sheets reinforced by stiff plates. The sandwich beam is considered symmetric, with identical top and bottom facesheets. Only a pure moment loading is considered. The J -integral coupled with laminate beam theory is employed to derive closed-form expression for the energy release rate in terms of the applied moments, geometry, and material properties. A scalar quantity ω is obtained to express the mode-mixity phase angle. It is shown that ω is independent of the applied loading conditions. The value of ω is found to be moderately influenced by reinforcement thicknesses.


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    Title :

    Fracture Mechanics Analysis of Reinforced DCB Sandwich Debond Specimen Loaded by Moments


    Contributors:

    Published in:

    AIAA Journal ; 56 , 1 ; 413-422


    Publication date :

    2018-01-01




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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