Fatigue damage evolution and degradation of mechanical properties in silicon-carbide (SiC) fiber-reinforced titanium matrix composites
Conference
·
OSTI ID:536394
- Univ. of California, Los Angeles, CA (United States). Dept. of Materials Science and Engineering
Fatigue damage accumulation and failure modes of several unidirectional and angle-ply SCS-6 fiber-reinforced titanium matrix composites are reviewed. The fatigue damage characteristics of the notched and unnotched composites were classified using several schematic diagrams based upon the constituent`s properties and loading conditions. Quantitative relationships between the microstructural damage and stiffness reduction were also established. A shear-lag model incorporating a damage function (which involved the cracking density and length, fiber/matrix frictional stress, and debonding length) was also used to predict residual stiffness of the composites.
- Sponsoring Organization:
- National Science Foundation, Washington, DC (United States); Department of the Air Force, Washington, DC (United States)
- OSTI ID:
- 536394
- Report Number(s):
- CONF-940399--; ISBN 0-8031-2039-7
- Country of Publication:
- United States
- Language:
- English
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