Volume 13, Issue 1 (March 1991)

    Fiber Pushout Test: A Three-Dimensional Finite Element Computational Simulation

    CODEN: CTROAD

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    Abstract

    A fiber pushthrough process has been computationally simulated using a three-dimensional (3-D) finite element method. The interphase material is replaced by an anisotropic material with greatly reduced shear modulus, such that the simulation becomes linear up to the fiber pushthrough load. Such a procedure is easily implemented and is computationally very effective. It can be used to predict fiber pushthrough load for a composite system at any temperature. The average interface shear strength obtained from pushthrough load can easily be separated into its two components: one that comes from frictional stresses and the other that comes from chemical adhesion between fiber and the matrix and mechanical interlocking that develops as a result of shrinkage of the composite because of phase change during the processing. Step-by-step procedures are described to perform the computational simulation, to establish bounds on interfacial bond, and to interpret interfacial bond quality.


    Author Information:

    Chamis, CC
    Senior aerospace scientist, NASA Lewis Research Center, Cleveland, OH

    Mital, SK
    Research associate, Institute for Computational Mechanics in Propulsion, NASA Lewis Research Center, Cleveland, OH


    Stock #: CTR10069J

    ISSN: 0884-6804

    DOI: 10.1520/CTR10069J

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    Author
    Title Fiber Pushout Test: A Three-Dimensional Finite Element Computational Simulation
    Symposium , 0000-00-00
    Committee D30