Abstract
A unique tension-torsion fatigue test set up is described that allows strain-controlled tests at temperatures exceeding 649°C. The machine uses a large die set as a load frame resulting in lower cost and superior parallel positioning of the crossheads. Disposable weld-on grips were found to be cost effective for elevated-temperature testing. A new extensometer using commercially available capacitance probes was developed which can operate at the elevated temperature without cooling. Capacitance ring probes were utilized in an attempt to measure through-thickness strains. The characteristic behavior of the ring probes is discussed. Design modifications needed to make a successful measurement of through-thickness strains at elevated temperatures are presented.
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Jordan, E.H., Chan, C.T. A unique elevated-temperature tension-torsion fatigue test rig. Experimental Mechanics 27, 172–183 (1987). https://doi.org/10.1007/BF02319471
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DOI: https://doi.org/10.1007/BF02319471