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    A Model for the Creep Response of Oxide-Oxide Ceramic Matrix Composites

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    A numerical model has been developed to predict the creep response of ceramic matrix composites (CMCs) to understand better the sustained load behavior of an eight-harness satin-weave Nextel™ 6102 /aluminosilicate CMC. A two-phase system in which each phase exhibits significant creep is considered. Mori-Tanaka estimates of the overall elastic response are used in conjunction with transformation field analysis to predict the inelastic deformation in each phase and evaluate the overall CMC response. Good correlation between the model and experimental data is obtained over a wide range of temperature and stress conditions when micromechanical estimates of the matrix elastic stiffness are used. The correlation is sensitive to the matrix elastic properties and, thus, provides a method to determine in-situ matrix properties when conventional methods fail, as in this case.


    creep, ceramic matrix composite, transformation field analysis

    Author Information:

    Zuiker, JR
    Materials Research Engineer, Wright Laboratory Materials Directorate, Wright-Patterson AFB, OH

    Committee/Subcommittee: C28.07

    DOI: 10.1520/STP11825S