Method for manufacturing a composite material part comprising a body extended by a reinforced attachment end

Method for manufacturing an aircraft composite material part comprising a body (14) extended by a reinforced coupling end (16), comprising the operations of:

• forming a fibrous blank (13) from a three-dimensional fabric comprising warp threads (12) oriented in a main direction (AR) with separation of at least one end (16) of the fibrous blank (13) in order to constitute at least two sets of integrated layers (21, 22, 23);
• shifting at least one set of integrated layers (22, 23) in a planar configuration by offsetting one end edge (24) of said set of integrated layers (22, 23) by applying to said end edge (24) a shear displacement oriented parallel to the set of integrated layers (22, 23) and perpendicular to the main direction (AR), in order to incline the warp threads (12) of said set of integrated layers (22, 23) relative to the main direction (AR);
• shaping of the fibrous blank in order to constitute a preform;
• injection of a matrix into the preform.