Composite structure and method for producing a composite structure

Abstract

A method for producing a composite structure and a composite structure obtained by the method is described. The method comprises the following steps: a) providing a mold comprising a rigid mold part and a flexible vacuum bag, b) placing a fiber insertion in the mold part, the fiber insertion including a plurality of fiber layers and, when placed in the mold part, having an upper surface and a lower surface as well as a first side and a second side, the fiber insertion including a first zone at the first side and a second zone at the second side, the first zone and the second zone being separated by an intermediate zone, c) placing an upper distribution medium above the intermediate zone of the fiber insertion, the distribution medium comprising a resin distribution network for distributing resin along the upper distribution medium, d) placing a number of resin inlet channels above the upper distribution medium for supplying liquid resin to the resin distribution network, e) placing a first vacuum outlet at least partially overlapping the first zone of the fiber insertion and a second outlet at least partially overlapping the second zone of the fiber insertion, f) placing the vacuum bag on top of the mold part, thus sealing the vacuum bag against the mold part to define a mold cavity, g) evacuating the mold cavity, h) connecting a source of uncured fluid resin to the resin inlet channels so as to feed uncured resin to the resin distribution network in order to fill the mold cavity and to impregnate at least the fiber insertion and the upper distribution medium with uncured resin, and i) allowing the resin to cure in order to form the composite structure.