Method for manufacturing a complexly shaped composite...

B - Operations – Transporting – 29 – C

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B29C 70/22 (2006.01) B29B 11/02 (2006.01) B29C 70/24 (2006.01) B29C 70/54 (2006.01) C04B 35/80 (2006.01) C04B 35/83 (2006.01) C04B 41/45 (2006.01) C23C 16/04 (2006.01) D06H 7/14 (2006.01) F01D 5/14 (2006.01) F01D 5/28 (2006.01)

Patent

CA 2744895

A part of complex shape made of composite material comprising three-dimensionally woven fiber reinforcement densified with a matrix is fabricated by a method comprising the steps of: .cndot. three-dimensionally weaving a continuous fiber strip comprising a succession of fiber blanks (200) for preforms of a plurality of parts that are to be fabricated; .cndot. subsequently cutting individual fiber blanks out from the strip, each blank (200) being a one-piece blank; .cndot. shaping a cut-out blank to obtain a one-piece fiber preform having a shape that is close to the shape of a part that is to be fabricated; consolidating the preform in the desired shape; and densifying the consolidated preform by forming a matrix by chemical vapor infiltration.

Une pièce de forme complexe en matériau composite comprenant un renfort fibreux tissé tridimensionnel et densifié par une matrice est fabriquée par un procédé comportant les étapes de : - tissage tridimensionnel d'une bande fibreuse continue comprenant une succession d'ébauches fibreuses (200) de préformes d'une pluralité de pièces à fabriquer, - découpe ensuite dans la bande d'ébauches fibreuses individuelles, chaque ébauche(200) étant en une seule pièce, - mise en forme d'une ébauche découpée pour obtenir une préforme fibreuse ayant une forme voisine de celle d'une pièce à fabriquer, - consolidation de la préforme dans la forme voulue, et - densification de la préforme consolidée par formation d'une matrice par infiltration chimique en phase gazeuse.

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