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    Creep Analysis of Laminates

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    Results are presented for an analytical investigation of the creep response of laminated composites. This analysis relates the creep response of the composite to the fiber-matrix creep properties. First, the method of predicting the biaxial creep response of a unidirectional composite is described and some qualitative results given. Some interesting effects are the time dependence of the coefficients of thermal expansion of the composite and the pseudo-primary creep stage in a composite whose constituents only exhibit secondary creep. The analysis is then extended to symmetric laminates and the creep response of boron-epoxy and boron-aluminum composites are investigated.


    composite materials, creep tests, finite elements, laminates, mechanical properties, thermal expansion, stress analysis, boron fibers

    Author Information:

    Foye, RL
    Aerospace technologist, U.S. Army Air Mobility Research & Development Laboratory, Langley Research Center, Hampton, Va.

    Committee/Subcommittee: D30.04

    DOI: 10.1520/STP32321S