Fatigue behavior of [0]{sub 8} SCS-6/Ti-6Al-4V composite subjected to high temperature turboshaft design cycles
- Allied Signal, Stratford, CT (United States)
- National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center
Performance and thrust-to-weight goals of advanced gas turbine engines require significant advances in material capabilities. Titanium matrix composites (TMCs) offer significant opportunities in compressor components to achieve performance improvements by reducing weight and increasing speed. Mission cycle fatigue testing of a [0]{sub 8} SCS-6/Ti-6Al-4V composite was performed. The mission cycle simulates the stress-temperature-time profile in a ring-reinforced impeller of a turboshaft engine. The cycle has a fourteen minute period and attains a peak stress and temperature of 1,100 MPa and 427 C respectively. A fatigue life of 9,528 cycles was achieved. While this life was less than the design goal, 15,000 cycles, a moderate increase in fiber content coupled with a small decrease i peak stress or temperature would probably achieve the stated design goal.
- OSTI ID:
- 531481
- Report Number(s):
- CONF-941159-; ISBN 0-8031-2001-X; TRN: IM9743%%17
- Resource Relation:
- Conference: 2. symposium on thermomechanical fatigue behavior of materials, Phoenix, AZ (United States), 14-15 Nov 1994; Other Information: PBD: 1996; Related Information: Is Part Of Thermomechanical fatigue behavior of materials: Second volume; Verrilli, M.J. [ed.] [NASA Lewis Research Center, Cleveland, OH (United States)]; Castelli, M.G. [ed.] [NYMA, Inc., Brook Park, OH (United States)]; PB: 384 p.; ASTM special technical publication, 1263
- Country of Publication:
- United States
- Language:
- English
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