STP289: A Technique for Torsional Testing Refractory Materials at Temperatures up to 2800 C

    Waller, C. E.
    Assistant Senior Engineer, Aerojet-General Corp., Azusa, Calif

    Stehsel, M. L.
    Assistant Senior Engineer, Aerojet-General Corp., Azusa, Calif

    Pages: 10    Published: Jan 1961


    This paper describes a technique for the torsional testing of some refractory materials at temperatures from ambient to 2800 C. A carbon resistance furnace and auxiliary devices for measuring and recording torsional stress-strain, creep, and stress relaxation properties of specimens in an inert atmosphere are described. Some results obtained from evaluating a commercial graphite and a uranium-impregnated graphite are shown, demonstrating the suitability of this technique for determining large stresses and strains. Limitations of the equipment in determining small strains and stresses, due to mechanical friction and inertia, are mentioned, as well as inaccuracies in determining true torsional stresses and strains in the plastic range inherent in the use of a solid round specimen.

    Paper ID: STP44368S

    Committee/Subcommittee: E01.20

    DOI: 10.1520/STP44368S

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