STP972: The Correlation of Low-Velocity Impact Resistance of Graphite-Fiber-Reinforced Composites with Matrix Properties

    Bowles, KJ
    Materials engineer, National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH

    Pages: 19    Published: Jan 1988


    Abstract

    This paper summarizes basic studies that were conducted to correlate the impact resistance of graphite-fiber-reinforced composites with polymer matrix properties. Three crosslinked epoxy resins and a linear polysulfone were selected as composite matrices. As a group, these resins possess a significantly large range of mechanical properties. The mechanical properties of the resins and their respective composites were measured. Neat resin specimens and unidirectional and crossply composite specimens were impact-tested with an instrumented drop-weight tester. Impact resistances of the specimens were assessed on the basis of loading capability, energy absorption, and extent of damage.

    Keywords:

    graphite fiber composites, epoxy matrix, thermoplastic matrix, impact resistance, toughness, mechanical properties, failure mechanisms


    Paper ID: STP26131S

    Committee/Subcommittee: D30.02

    DOI: 10.1520/STP26131S


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