SEDL / STP / STP488-EB / STP26909S

Effect of Thermocouple Drift on Rupture Life at High Temperature

Voorhees, HR
Technical director, Materials Technology Corp., Ann Arbor, Mich.

Pages: 3    Published: Jan 1971

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Abstract

Rupture life of Waspaloy in four tests under 9050-psi stress at 1700 F nominal temperature tended to be longer when temperature was adjusted in accordance with the reading of a noble metal thermocouple than when Type K base metal thermocouples were used. Drift of the reading of the base metal thermocouples relative to that of an adjacent noble metal thermocouple did not exceed 3 F in tests of nearly 400-h duration.