Dynamic fracture responses of Al2O3, Si3N4 and SiCw/Al2O3. Technical report, Aug 89-Mar 91

Technical Report · Wed Apr 03 23:00:00 EST 1991

OSTI ID:5411527

Takagi, Y; Kobayashi, A S

A hybrid experimental-numerical procedure was used to characterize the dynamic fracture responses of alumina (Al2O3), silicon nitrides, (Si3N4) and silicon-carbide whisker/alumina matrix (SiC subW/Al2O3) composite. A laser interferometric displacement gage was used to determine through the crack opening displacement (COD), the instantaneous crack tip location during rapid fracture at room temperature and 1000 C. Consistent with previous finding, the dynamic crack arrest stress intensity factor did not exist in the ceramics and ceramic matrix composite studied.

• Research Organization: Washington Univ., Seattle, WA (United States). Dept. of Mechanical Engineering
• OSTI ID: 5411527
• Report Number(s): AD-A-235286/2/XAB; UWA/DME/TR--91/5; CNN: N00014-87-K-0326
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
360603 -- Materials-- Properties
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AMBIENT TEMPERATURE
CARBIDES
CARBON COMPOUNDS
CERAMICS
CHALCOGENIDES
COMPOSITE MATERIALS
COORDINATES
CRACKS
CRYSTALS
FRACTURE MECHANICS
FUNCTIONS
INTERFEROMETERS
MATERIALS
MATHEMATICS
MATRIX MATERIALS
MEASURING INSTRUMENTS
MECHANICS
MONOCRYSTALS
NITRIDES
NITROGEN COMPOUNDS
NUMERICAL ANALYSIS
OXIDES
OXYGEN COMPOUNDS
PNICTIDES
RESPONSE FUNCTIONS
SILICON CARBIDES
SILICON COMPOUNDS
SILICON NITRIDES
STRESS INTENSITY FACTORS
WHISKERS