| 摘要 |
A reinforcement preform for a carbon/carbon or the like component such as an airfoil guide vane comprises a knitted fabric formed with a hole or slot (12) in the vicinity of a junction between adjacent sections of the finished article and on assembly the reinforcement fabric (6, 8) for one of the sections is passed through the hole. In this way stresses can be better transmitted to a base section with reduced risk of tearing or delamination. In addition a rib may be formed on the part (4) and may be secured by stitching. The fabric may be of silicon carbide fibres. <IMAGE> |
