Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10629876 | Journal of the European Ceramic Society | 2005 | 6 Pages |
Abstract
The distributions of fibre strength, pullout length, and fibre/matrix interface shear strength within a single fibre bundle were investigated for a 3-D woven SiC/SiC composite tensile tested at 1100 °C in air. Fibre pullout lengths were largest at the fibre bundle centre with an embrittled region of approximate width 15 μm at the perimeter. Whereas the fibre strength varied by less than a factor of 2 across the fibre bundle, the fibre/matrix interface shear strength varied by a factor of â¼23 with a minimum (100±16 MPa) at the centre and a maximum (2.25±0.21 GPa) close to the embrittled region. The minimum fibre/matrix interface shear strength required for the transition between pseudo-ductile and brittle behaviour was thus estimated to be 2.25±0.21 GPa for this composite system.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Ian J. Davies, Toshio Ogasawara, Takashi Ishikawa,