Method for manufacturing a part of revolution made of composite material with a reduced-toughness inter-ply portion

Abstract

Method for manufacturing a part of revolution in composite material with a reduced-toughness inter-ply portion. The invention relates to a method for manufacturing a part of revolution (100) in composite material for a gas turbine, comprising the following steps: - three-dimensional weaving of a fibrous texture (140) in the form of a strip between a plurality of layers of warp strands (20) and a plurality of layers of weft strands (30), - winding of the fibrous texture (140) on several superimposed turns (141, 142, 143, 144) on a mandrel (200) in order to obtain a fibrous preform (300) of the shape of revolution, - densification of the fibrous preform (300) by a matrix, the method further comprising, during the weaving of the fibrous texture,the realization on at least one of the first and second faces of the fibrous texture of a portion with reduced tenacity (150) having warp strands with a diameter smaller than the diameter of the warp strands of the other portions present on said first and second faces. Figure for the abbreviation: Fig. 2,