Dynamic fracture toughness of ceramic composites
- Resource Type
- Conference
- Authors
- Source
- Ceram. Eng. Sci. Proc.; (United States); 9; Conference: 12. annual conference on composites and advanced ceramic materials, Cocoa Beach, FL, USA, 20 Jan 1988
- Subject
- 36 MATERIALS SCIENCE ALUMINIUM OXIDES
FRACTURE PROPERTIES
SILICON CARBIDES
TITANIUM BORIDES
CRACK PROPAGATION
FINITE ELEMENT METHOD
MATRIX MATERIALS
REINFORCED MATERIALS
STRESS INTENSITY FACTORS
WHISKERS
ALUMINIUM COMPOUNDS
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
CRYSTALS
MATERIALS
MECHANICAL PROPERTIES
MONOCRYSTALS
NUMERICAL SOLUTION
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS 360203* -- Ceramics, Cermets, & Refractories-- Mechanical Properties
- Language
- English
The dynamic fracture toughness vs crack velocity relationships of TiB2 particulate-reinforced SiC-matrix and SiC whisker-reinforced Al/sub 2/O/sub 3/-matrix composites were determined at both room temperature and 1200 C with impacted, single-edge notched three-point bend specimens. Rapid crack initiation and propagation were monitored by a laser interferometric-displacement gage system. A FEM model that transmitted the measured outside-impact load to the specimen within the furnace was used to characterize the entire loading system-specimen unit. Small differences were measured between the room temperature and 1200 C dynamic responses. 11 references.