Chapter 51. Stress/Life Behavior of a C/SiC Composite in a Low Partial Pressure of Oxygen Environment Part I: Static Strength and Stress Rupture Database
- Hua-Tay Lin,
- Mrityunjay Singh
Published Online: 26 MAR 2008
Copyright © 2002 The American Ceramic Society
26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3
How to Cite
Verrilli, M. J., Calomino, A. and Thomas, D. J. (2008) Stress/Life Behavior of a C/SiC Composite in a Low Partial Pressure of Oxygen Environment Part I: Static Strength and Stress Rupture Database, in 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3 (eds H.-T. Lin and M. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294741.ch51
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 2002
Print ISBN: 9780470375785
Online ISBN: 9780470294741
- structural propulsion;
Tensile strengths and stress-rupture lives were obtained for carbon fiber-reinforced silicon carbide (C/SiC) composite specimens. The testing was performed at 1200°C in an environment of 1000-ppm oxygen, with argon as the remaining gas. Twenty tensile tests were conducted. The stress-rupture database includes over twenty test results, with test stresses in the range of 276 to 100 MPa resulting in lives in the range of 4 to 160 hours. All specimens were machined from a single material lot. Plate-to-plate variability of tensile strength and stress-rupture lives was observed and is discussed. Also, the creep strain data as a function of stress and plate ID is presented.
During the stress-rupture testing of C/SiC specimens, the partial pressure of O2 flowing out of the chamber was monitored and found to vary as a function of test time for any given test. The effluent partial pressure of O2 varied with test stress and these results are presented as well.