SEDL / STP / STP303-EB / STP46990S

Compression Testing of Sheet Materials at Elevated Temperatures

Papirno, Ralph
Research Scientist, New York University, New York, N. Y.

Gerard, George
Associate Director of Research, New York University, New York, N. Y.

Pages: 21    Published: Jan 1962

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Abstract

Information on a novel compression testing machine and extensometer system for both short- and long-time testing at elevated temperatures is presented. In combination with a lateral solid or ball-bearing support guide compression jig, this system has been used to obtain compressive stress-strain and creep data on sheet materials. The compression unit is horizontal in operation which results in low spatial temperature variations in the test region. A pneumatic loading system permits accurate control during the loading phase and avoids undesirable seismic effects during creep. The elevated-temperature extensometer utilizes differential capacitor sensors which combine a high sensitivity for accurate determination of elastic modulus with a long linear response range. Sheet compression tests were performed in a jig having lateral solid or ball-bearing support guides. Short-time and creep data are presented for a number of sheet titanium alloys up to 950 F.