Effect of flaw size and temperature on the matrix cracking behavior of a brittle ceramic matrix composite
- Univ. of Cincinnati, OH (United States)
The matrix cracking behavior of a zircon matrix - uniaxial SCS 6 fiber composite was studied as a function of initial flaw size and temperature. The composites were fabricated by a tape casting and hot pressing technique. Surface flaws of controlled size were introduced using a vicker`s indenter. The composite samples were tested in three point flexure at three different temperatures to study the non steady state and steady state matrix cracking behavior. The composite samples exhibited steady state and non steady matrix cracking behavior at all temperatures. The steady state matrix cracking stress and steady state crack size increased with increasing temperature. The results of the study correlated well with the results predicted by the matrix cracking models.
- DOE Contract Number:
- FG02-91ER45459
- OSTI ID:
- 530697
- Report Number(s):
- CONF-9604124--
- Country of Publication:
- United States
- Language:
- English
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