PI-SECTION REINFORCING PIECE MADE OF COMPOSITE MATERIAL NOTABLY TURBOMACHINE FAN PLATFORM AND METHOD OF MANUFACTURING SAME

摘要

The invention relates to a method of manufacturing a p 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 p section reinforcing piece obtained using the method.