| 摘要 |
A method and apparatus of manufacturing a composite component (e.g. an aerofoil blade or vane for a gas turbine engine), the component comprising a fibrous network 7 and a matrix material, comprises providing a fibrous preform within a cavity 6 of a mould 2, filling the mould cavity with a liquid/molten matrix material and vibrating the mould e.g. during and/or after filling the mould cavity. The mould may be vibrated at a first frequency during filling of the mould cavity and at a second, higher, frequency after filling. Further the method may comprise vibrating the mould at first and second amplitudes and in a first and second, perpendicular, direction. Multiple vibrators 8 may be provided; there may be a plurality of mutually spaced, selectively vibratable vibrators operated to provide zoned vibrations i.e. to selectively vibrate portions of the mould. The method may comprise flushing the mould cavity with a matrix-permeable gas or fluid prior to filling of the mould. The vibrators may be electro-mechanical and/or ultrasonic vibrators. |
