Fracture toughness of fiber-reinforced glass ceramic and ceramic matrix composites

Conference · Thu Aug 01 00:00:00 EDT 1991 · Ceramic Engineering and Science Proceedings; (United States)

OSTI ID:6115281

Stull, K R; Parvizi-majidi, A

A fracture mechanics investigation of 2D woven Nicalon SiC/SiC and Nicalon SiC/LAS has been undertaken. An energy approach has been adopted to characterize and quantify the fracture properties of these materials. Chevron-notched bend specimens were tested in an edgewise configuration in which the crack propagated perpendicular to the ply direction. R-curves were obtained from repeated loading and unloading of specimens using several methods of data reduction. Values correconding to the plateau regions of the R-curves were taken as steady-state crack-growth resistance. These ranged from 37 to 63 kJ/sq m for 2D-SiC/LAS and 2.6 to 2.8 kJ/sq m for 2D-SiC/SiC composites. 6 refs.

• OSTI ID: 6115281
• Report Number(s): CONF-910162-; CODEN: CESPD
• Journal Information: Ceramic Engineering and Science Proceedings; (United States), Vol. 12; Conference: 15. annual conference on composites and advanced ceramics, Cocoa Beach, FL (United States), 13-16 Jan 1991; ISSN 0196-6219
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COMPOSITE MATERIALS
FRACTURE PROPERTIES
SILICON CARBIDES
ALUMINIUM OXIDES
CARBON
CRACK PROPAGATION
ELASTICITY
FIBERS
FRACTURE MECHANICS
GLASS
LITHIUM COMPOUNDS
MATRIX MATERIALS
PLASTICITY
SILICON OXIDES
ALKALI METAL COMPOUNDS
ALUMINIUM COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
ELEMENTS
MATERIALS
MECHANICAL PROPERTIES
MECHANICS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
TENSILE PROPERTIES
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties
360603 - Materials- Properties