STP964: Thermal-Mechanical Fatigue Test Apparatus for Metal Matrix Composites and Joint Attachments

    Westfall, LJ
    Materials engineers, National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH

    Petrasek, DW
    Materials engineers, National Aeronautics and Space Administration, Lewis Research Center, Cleveland, OH

    Pages: 15    Published: Jan 1988


    Abstract

    Two thermal-mechanical fatigue (TMF) test facilities were designed and developed, one to test tungsten fiber reinforced metal matrix composite specimens at temperatures up to 1700 K (2600°F) and another to test composite/metal attachment bond joints at temperatures up to 1030 K (1400°F). The TMF facility designed for testing tungsten fiber reinforced metal matrix composites permits test specimen temperature excursions from room temperature to 1700 K (2600°F) with controlled heating and loading rates. A strain-measuring device measures the strain in the test section of the specimen during each heating and cooling cycle with superimposed loads. Data are collected and recorded by a computer. The second facility was designed to test composite/metal attachment bond joints and to permit heating to a maximum temperature of 1030 K (1400°F) within 600 s and cooling to 420 K (300°F) within 180 s. A computer controls specimen temperature and load cycling.

    Keywords:

    metal matrix composites, composite tubes, root attachments, thermal fatigue, thermal-mechanical fatigue


    Paper ID: STP25940S

    Committee/Subcommittee: D30.04

    DOI: 10.1520/STP25940S


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