STP1012: Fiber Composite Structural Durability and Damage Tolerance: Simplified Predictive Methods

    Chamis, CC
    Senior aerospace scientist and aerospace engineer, National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH

    Ginty, CA
    Senior aerospace scientist and aerospace engineer, National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH

    Pages: 18    Published: Jan 1989


    Abstract

    Simplified predictive methods and models (“theory”) to evaluate fiber/polymermatrix composite material for determining structural durability and damage tolerance are described. This “theory” includes equations for: (1) fatigue and fracture of composites without and with defects; (2) impact resistance and residual strength after impact; (3) thermal fatigue; and (4) combined stress fatigue. Several examples are included to illustrate applications of the “theory” and to identify significant parameters and sensitivities. Comparisons with limited experimental data are made.

    Keywords:

    fatigue, fracture, impact, residual strength, thermal, hygral (moisture), combined load, stress concentration, thermal cycles, thermal cracking


    Paper ID: STP10424S

    Committee/Subcommittee: D30.05

    DOI: 10.1520/STP10424S


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