Notch sensitivity and stress redistribution in three ceramic-matrix composites
Journal Article
·
· Journal of the American Ceramic Society
- Univ. of California, Santa Barbara, CA (United States). High Performance Composites Center
- Pratt and Whitney, United Technologies, Jupiter, FL (United States)
Fiber-reinforced ceramic-matrix composites (CMCs) depend upon inelastic mechanisms to diffuse stress concentrations associated with holes, notches, and cracks. These mechanisms consist of fiber debonding and pullout, multiple matrix cracking, and shear band formation. In order to understand these effects, experiments have bee conducted on several double-edge-notched CMCs that exhibit different stress redistribution mechanisms. Stresses have been measured an d mechanisms identified by using a combination of methods including X0-ray imaging, edge replication, and thermoelastic analysis. Multiple matrix cracking was found to be the most effective stress redistribution mechanism.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 103606
- Journal Information:
- Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 7 Vol. 78; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
Similar Records
Processing and mechanical properties of high temperature/high performance composites. Stress redistribution and notch properties. Book 2. Annual report, 1 March 1992-28 February 1994
Ceramic Matrix Composites
Laser-ultrasonic evaluation of damage in unidirectional ceramic matrix composites
Technical Report
·
Mon Feb 28 23:00:00 EST 1994
·
OSTI ID:6981783
Ceramic Matrix Composites
Book
·
Sun Nov 11 23:00:00 EST 2001
·
OSTI ID:901485
Laser-ultrasonic evaluation of damage in unidirectional ceramic matrix composites
Conference
·
Sun Mar 31 23:00:00 EST 1996
·
OSTI ID:219493