STP723: Fatigue Retardation Due to Creep in a Fibrous Composite

    Sun, CT
    Professor and graduate student, School of Aeronautics and Astronautics, Purdue University, West Lafayette, Ind.

    Chim, ES
    Professor and graduate student, School of Aeronautics and Astronautics, Purdue University, West Lafayette, Ind.

    Pages: 10    Published: Jan 1981


    Abstract

    A series of experiments were performed in an attempt to investigate the effect of creep strain and temperature on the fatigue life of a [±45]2s graphite/epoxy composite laminate. The experimental results indicate that sustained periods of static loads have significant retardation effects and that cyclic loading with a lower frequency preceeding one with a higher frequency also prolongs the fatigue life.

    Keywords:

    composite materials, fatigue (materials), retardation, crack propagation, creep, hold time


    Paper ID: STP27623S

    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP27623S


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