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Developments in Ceramic Materials Research

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Model<strong>in</strong>g of Thermal Transport <strong>in</strong> <strong>Ceramic</strong>s Matrix Composites 181<br />

T300 carbon fibres manufactured from carbon are arranged <strong>in</strong> tows, which have been<br />

used to form a pla<strong>in</strong> weave (Figures 4 and 5) to generate a s<strong>in</strong>gle lam<strong>in</strong>ate. Ten such<br />

lam<strong>in</strong>ates are assembled to form a sheet of the DLR-XT composite. The lam<strong>in</strong>ate bundle is<br />

<strong>in</strong>filtrated with a polymer, which is thermally decomposed to leave a carbon char. This <strong>in</strong> turn<br />

is <strong>in</strong>filtrated with liquid silicon, which reacts with the carbon char to give silicon carbide,<br />

which forms the matrix around the carbon fibre bundles.<br />

Figure 4. DLR-XT - schematic view of a composite macro unit cell of a s<strong>in</strong>gle lam<strong>in</strong>ate.<br />

Figure 5. Diagrammatic plan view of a plane weave configuration.<br />

Figure 6. Schematic draw<strong>in</strong>g of (a) a material lam<strong>in</strong>ate; (b) a lam<strong>in</strong>a element and global coord<strong>in</strong>ate<br />

system.

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