Repair or resumption of manufacture of a part made of composite material with three-dimensional woven fiber reinforcement A method of repairing a part made of composite material (10) comprising: - the production of a recessed portion (30) by removing the composite material at level of a damaged area (20), - the production of grooves (110, 120) extending on both sides (11, 12) of the part (10) from the edges (32, 34) of the portion hollow, - the production of a plurality of orifices (130) in the thickness of the part opening into the grooves, - the three-dimensional weaving of fiber preforms of the filling part (40, 50) comprising a central portion (41, 51) having a shape corresponding to the shape of the recessed portion and a plurality of fiber bundles (420, 450) extending from the central portion (41, 51), - the placement of the filling preforms (40, 50) respectively on one and the other face of the part (10) with the fibrous bundles present in the rain ures present on the faces of the part and in the orifices of the plurality of orifices (130) so that the fibrous bundles open into the grooves present on the opposite face of the part, - the impregnation of the fiber preforms with filling (40, 50) with a precursor resin of a matrix, - transformation of the resin into a matrix in order to obtain a filling part made of composite material (60) comprising a fibrous reinforcement densified by a matrix. Figure for the abstract: Fig. 7B.
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