| 摘要 |
The invention relates to a method of manufacturing a &pgr;-section reinforcing piece (10) made of composite material, the method involving using three-dimensional weaving to create a first set of layers of threads which layers are joined together to form a first fibrous rough form part (102) intended to form a base preform, using three-dimensional weaving to create a second set of layers of threads which layers are joined together to form a second fibrous rough form part (104) intended to form a stiffener preform, threads of the second set being connected by weaving to the threads of the first set along a central disconnection strip (106) that widens towards the lateral edges (102a) of the first fibrous rough form part in a region (108, 110) corresponding to the step of the base, shaping the two fibrous rough form parts to obtain a fibrous preform (100) in a single piece that has a part forming the base preform and a part forming a stiffener preform, and applying a resin to the fibrous preform using a die. The invention also relates to a &pgr;-section reinforcing piece obtained using the method. |
