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    Compression of “Thick” Composites: Two Test Methods

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    Because several uses of “thick” composites have become important to the armed forces, a need to characterize the compression properties of such materials was evident. A literature review did not uncover a test specimen that was adequate. Two programs to explore compression specimens will be discussed.

    The Navy specimen is an end-loaded coupon with tabs and clamping blocks. Its use was studied with glass epoxy and carbon epoxy materials.

    The Army specimen is a prism. Several materials have been tested with it. The observed failures and consistency of data indicate that it is a useful compression specimen.


    organic matrix composites, compression testing

    Author Information:

    Goeke, EC
    Mechanical engineer, Army Research Laboratory, Watertown, MA

    Committee/Subcommittee: D30.04

    DOI: 10.1520/STP12621S