Chapter 38. Damage Evolution in Hybrid Ceramic Matrix Composites
- John B. Wachtman Jr.
Published Online: 26 MAR 2008
Copyright © 1995 The American Ceramic Society
Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5
How to Cite
Carroll, D. R., Dharani, L. R., Goethe, J. E., Haug, S. B., Cai, W. and Hall, M. A. (2008) Damage Evolution in Hybrid Ceramic Matrix Composites, in Proceedings of the 19th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - B: Ceramic Engineering and Science Proceedings, Volume 16, Issue 5 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314784.ch38
- Published Online: 26 MAR 2008
- Published Print: 1 JAN 1995
Print ISBN: 9780470375389
Online ISBN: 9780470314784
- electrostatic precipitator;
An experimental characterization was conducted of the damage evolution in whisker reinforced, fiber reinforced, and hybrid ceramic matrix composites. Highly polished specimens were loaded in increments of 10 MPa, and with each increment were carefully examined with a microscope. Acoustic emission was used to detect the onset of microcracking and it was possible to show the microcracking damage in the composite associated with the acoustic emissions event. As the load was increased, the average distance between microcracks decreased, making more microcracks per mm along the length of the specimen. The fiber reinforced and hybrid samples showed considerable toughness beyond the microcracking stress level. The purpose of this paper is to show how the damage evolves as a function of the applied load and the acoustic emission events.