STP808

    Automated High-Temperature Testing of Ceramic Fiber Board

    Published: Jan 1983


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    Abstract

    Suppliers of ceramic fiber shapes need to be able to quantify the mechanical properties of such products at elevated temperatures. Standard test equipment is not designed to perform these tests at high temperatures, limiting strength data to results from room-temperature testing. In order to obtain the needed information, a high-temperature furnace (1922 K) and special test fixtures were designed for an MTS test machine (Model 810.21) for high-temperature compression testing. A PDP-11/04 minicomputer controlled the test parameters and performed test data analysis. Use of a ceramic fiber insulated furnace with molybdenum disilicide heating elements allowed very rapid heat-up rates and minimal delays between individual tests. Heat-up schedules were controlled by a microprocessor.

    Compression testing of conventional and experimental ceramic fiber board products was performed at temperatures up to 1811 K and deformations up to 50%. Plots of deformation versus stress were obtained at various temperatures for each composition. Results of the tests provided guidance for product improvement and established performance limits for product applications. This type of testing is now being performed routinely in similar product evaluation studies.

    Keywords:

    ceramic fibers, mechanical testing, high-temperature testing, compression, creep


    Author Information:

    Johnson, TA
    Research Engineer and Supervisor of the Fibers and Composites Group, Ceramics Section, Babcock and Wilcox Research Center, Lynchburg, VA

    Schenck, SR
    Research Engineer and Supervisor of the Fibers and Composites Group, Ceramics Section, Babcock and Wilcox Research Center, Lynchburg, VA


    Paper ID: STP36199S

    Committee/Subcommittee: E28.02

    DOI: 10.1520/STP36199S


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