Method of producing a composite structure via intermediate products, the related apparatus and a composite structure obtainable by the method

摘要

A method of producing a composite structure comprising fiber reinforced material and having a longitudinal direction is described. The method comprises the following steps: a) manufacturing a first structure comprising a first cured composite part having a first thickness and a longitudinal direction with a first end, and a number of first fiber layers extending from the first end, b) manufacturing a second structure comprising a second cured composite part having a second thickness and a longitudinal direction with a second end, and a number of second fiber layers extending from the second end, and c) arranging the first structure and the second structure so that the first end faces towards the second end, and arranging the first fiber layers and the second fiber layers so that at least a part of the first fiber layers overlap at least a part of the second fiber layers in the longitudinal direction, d) supplying liquid resin in order to impregnate the first fiber layers and the second fiber layers, and e) curing the liquid resin in order to form the composite structure comprising the first cured composite part, the second cured composite part, and an intermediate composite part including the first fiber layers and the second fiber layers.

主权项

1. A method of producing a wind turbine blade comprising fibre reinforced material and having a longitudinal direction, wherein the method comprises the following steps:
a) manufacturing a first structure comprising a first cured composite part having a first thickness and a longitudinal direction with a first end, and a number of first uncured fibre layers extending from the first end of the first cured composite part, b) manufacturing a second structure comprising a second cured composite part having a second thickness and a longitudinal direction with a second end, and a number of second uncured fibre layers extending from the second end of the second cured composite part, and c) arranging the first structure and the second structure so that the first end faces towards the second end, and arranging the first uncured fibre layers and the second uncured fibre layers so that at least a part of the first uncured fibre layers overlap at least a part of the second uncured fibre layers in the longitudinal direction,
i) providing a first mould part having a first sealing means for sealing against an interior surface of a first shell part of each of the first and second cured composite parts, and having a second sealing means for sealing against an interior surface of a second shell part of each of the first and second cured composite parts, andii) providing a second mould part having a first sealing means for sealing against an exterior surface of a first shell part of each of the first and second cured composite parts, and having a second sealing means for sealing against an exterior surface of a second shell part of each of the first and second cured composite parts, d) supplying liquid resin in order to impregnate the first uncured fibre layers and the second uncured fibre layers, e) applying positive pressure by inflating at least one of the sealing means of each of the first and second mould parts against one of the interior and exterior surfaces of each of the first and second shell parts, and f) curing the liquid resin in order to form a composite structure comprising the first cured composite part, the second cured composite part, and an intermediate composite part including the now-cured first fibre layers and the now-cured second fibre layers.