초록 ▼

A process for reconstituting or reconstructing a composite object having a defect which affects at least its surface includes: (a) placing at least one added piece or material, the shape and dimensions of which are matched to those of the defect, in or on the defect, the piece or material including

A process for reconstituting or reconstructing a composite object having a defect which affects at least its surface includes: (a) placing at least one added piece or material, the shape and dimensions of which are matched to those of the defect, in or on the defect, the piece or material including mechanically strong, continuous or staple fibers; (b) placing a polymer material in or on the defect to obtain a plastic matrix in which the fibers are distributed; (c) placing a gas-drain for draining the gases given off by the plastic matrix and a cover for extracting the gases, in succession and one on top of the other, on the added piece, which together with the rest of the object form an enclosure which is sealed with respect to the external atmosphere and circumscribes the defect and the added piece; and (d) while evacuating the sealed enclosure, heating the added piece using a radiant source, the emission from which includes infrared radiation, and placing the source with respect to the defect so as to irradiate the cover for extracting the gases given off by the plastic matrix. Wherein, the composite object including a cellular layer, a first resin is deposited at the bottom of the defect, a cellular replacement part is then inserted, a second resin is deposited on the exposed part of the cellular part together with at least one piece of a fabric of the continuous or staple fibers, and at least one operation consisting of (c) and (d) is carried out, such that the radiant source has an effect beyond the cellular layer.

대표청구항 ▼

1. A process for reconstituting or reconstructing a composite object having a sandwich structure and comprising a first monolithic layer, a cellular layer bonded on the first monolithic layer, and a second monolithic layer bonded on the cellular layer, the composite object having a defect extending

1. A process for reconstituting or reconstructing a composite object having a sandwich structure and comprising a first monolithic layer, a cellular layer bonded on the first monolithic layer, and a second monolithic layer bonded on the cellular layer, the composite object having a defect extending through the second monolithic layer, the cellular layer and into the first monolithic layer, the process comprising the steps of:(a) placing a first resin in the defect in the first monolithic layer of the composite object, the first resin filling the defect in the first monolithic layer; (b) placing a cellular replacement part on an exposed portion of the first resin in the defect in the cellular layer of the composite object the cellular replacement part filling the defect in the cellular layer; (c) placing a second resin and at least one piece of material comprising mechanically resistant continuous or staple fibers on an exposed portion of the cellular replacement part in the defect in the second monolithic layer of the composite object, so as to form a second resin matrix in which the fibers are distributed, the second resin and the at least one piece of material filling the defect in the second monolithic layer; (d) placing a cover on at least the second monolithic layer to form a sealed enclosure circumscribing the defect and at least the first resin and the cellular replacement part; and (e) irradiating and heating with a radiant source the cover and at least the first resin and the cellular replacement part with infrared radiation, the infrared radiation curing at least the first resin, and extracting through the cover the gases given off by at least the first resin during step (e).