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The proposed supersonic commercial transport has posed formidable new design problems requiring information on mechanical behavior of new materials and on the effects of long exposure to elevated temperatures during service. Experimental studies of titanium alloys have been conducted at National Aeronautics and Space Administration (NASA) Langley Research Center to define fatigue behavior, effects of temperature, rates of fatigue crack propagation, residual static strength, effect of aqueous environment on residual strength, the effect of outdoor exposure at elevated temperature, and behavior during simulated flights of the supersonic transport. These results are summarized and discussed.
fatigue tests, simulation, supersonic transport, environments, elevated temperature, corrosion fatigue, programmed loading, titanium alloys, fatigue crack propagation, residual strength, tests, evaluation
Hardrath, H. F.
HeadPersonal member of ASTM, National Aeronautics and Space Administration Langley Research Center, Hampton, Va.