STP808: Evaluation of Fixturing for Compression Testing of Metal Matrix and Polymer/Epoxy Composites

    Lamothe, RM
    Supervisory Materials Engineer and Materials Research Engineer, Army Materials and Mechanics Research Center, Watertown, MA

    Nunes, J
    Supervisory Materials Engineer and Materials Research Engineer, Army Materials and Mechanics Research Center, Watertown, MA

    Pages: 13    Published: Jan 1983


    Abstract

    The influence of fixture design on the compressive properties of three organic matrix and two metal matrix composites was investigated. Tabbed specimens of S2 glass/SP-250, Kevlar 49/Cycom 5143, T300 graphite/5208, FP alumina/aluminum, and FP alumina/magnesium were tested in compression, utilizing both the Celanese compression fixture described in the ASTM Test for Compressive Properties of Unidirectional or Crossply Fiber-Resin Composites (D 3410) and the modified Illinois Institute of Technology Research Institute (IITRI) indirect compression fixture. Difficulty was encountered in testing the metal matrix composites with the Celanese and IITRI fixtures, prompting the design of a new direct compression fixture. Details of the construction and use of this new fixture are discussed. Data obtained on the direct and indirect fixtures with identical material are compared statistically. Posttest examinations of failed specimens were made to determine similarity in failure mode.

    Keywords:

    direct compression, indirect compression, metal-matrix composites, epoxy resin composites, fixturing


    Paper ID: STP36207S

    Committee/Subcommittee: E28.02

    DOI: 10.1520/STP36207S


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