Chapter 45. C-Coupon Studies of SiC/SiC Composites Part II: Microstructural Characterization
- Hua-Tay Lin,
- Mrityunjay Singh
Published Online: 26 MAR 2008
DOI: 10.1002/9780470294741.ch45
Copyright © 2002 The American Ceramic Society
Book Title
26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 23, Issue 3
Additional Information
How to Cite
Hurwitz, F. I., Calomino, A. M., Morscher, G. N. and Mccue, T. R. (2008) C-Coupon Studies of SiC/SiC Composites Part II: Microstructural Characterization, 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.ch45
Publication History
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 2002
Book Series:
ISBN Information
Print ISBN: 9780470375785
Online ISBN: 9780470294741
- Summary
- Chapter
- References
Keywords:
- tensile;
- characterized;
- electron microscopy;
- interlaminar;
- characterization
Summary
A “C-coupon” was used to measure the interlaminar tensile behavior of five different composite materials: Sylramic/MI (melt infiltration SiC matrix), ZMI/MI, Sylramic/S300, and ZMI and Hi-Nicalon with an S200 matirx at room temperature, 816°Cand 1204°C. Fracture behavior was characterized by field emission scanning electron microscopy, and observed cracking compared with events measured by modal acoustic emission. Both radial and matrix hoop cracking along the inner radius arising from hoop stresses were observed for all material types. In those composites in which the radial cracks were sufficiently wide to view the composite interior, fracture was observed to occur at the fiber BN or BN matrix interface. Close agreement was found between the maximum radial stress, determined from the C-coupon, and the interlaminar tensile strength determined from the traditional “button test”.