Application of a high-temperature static strain gage to the measurement of thermal stresses in a turbine stator vane

R. H. Kemp, C. R. Morse, M. H. Hirschberg
naca-tn-4215
Mar 1958


The thermal stresses in a turbine stator vane of a turbojet engine were measured by means of static high-temperature resistance-wire strain gages. The temperature variations existing in the engine were duplicated in the vane in a test setup at a reduced average temperature. Stress measurements at the leading and trailing edges indicated maximum principal values in compression of 18,100 and 27,200 psi, respectively. In the midchord region on the suction surface, the maximum principal stress was 19,600 psi in compression and in the midchord region on the pressure surface, 26,200 psi in tension.

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