STP546: Microbuckling of Lamina-Reinforced Composites

    Greszczuk, LB
    Staff engineer, McDonnell Douglas Astronautics Company, Huntington Beach, Calif.

    Pages: 25    Published: Jan 1974


    Abstract

    Compressive strength and failure modes of unidirectionally lamina-reinforced composites were studied both theoretically and experimentally. The failure modes investigated included microbuckling and compressive strength failure of the reinforcement. The influence of the following parameters on compressive strength was investigated experimentally: lamina volume fraction, lamina end fixity, lamina thickness, specimen geometry, and matrix properties. The two-dimensional microbuckling theory showed good correlation with test data from specimens designed to fail by microbuckling. As the Young's modulus of the matrix increased, the failure mode changed from microbuckling to compressive failure of the reinforcement.

    Keywords:

    Composite materials, compression, microbuckling, reinforced plastics, theories, microinstability, composite structures, failure, stresses


    Paper ID: STP35480S

    Committee/Subcommittee: D30.04

    DOI: 10.1520/STP35480S


    CrossRef ASTM International is a member of CrossRef.