Method for manufacturing a part made of composite material

A method for manufacturing a part made of composite material comprising steps of:

• placing in a mold, a fibrous preform including reinforcing fibers and being resin-impregnated, the reinforcing fibers being positioned in plies;
• positioning a prefabricated element in the mold in contact with the fibrous preform at a predefined location of the fibrous preform by pushing the prefabricated element in between the plies, the prefabricated element having a predefined form and being produced in composite material comprising partially polymerized resin;
• positioning an additional prefabricated element made of partially polymerized composite material in the mold in contact with the fibrous preform and in contact with the prefabricated element;
• compressing the assembly formed by the fibrous preform and the prefabricated element in the mold;
• heating the assembly formed by the fibrous preform and the prefabricated element in the mold to polymerize the resin and thus bind the prefabricated element with the fibrous preform in order to form the part made of composite material, the additional prefabricated element also being heated so as to be bound with the fibrous preform and with the prefabricated element in the polymerization of the resin, the additional prefabricated element forming a base for the part.