Method for manufacturing beams of fiber-reinforced composite material

摘要

A method for manufacturing a hollow load-bearing beam structure of fiber-reinforced composite material. The method comprises the steps of preparing a first lay-up (1; 12) of a first plurality of layers (1a-1d; 12a-12d), and a second lay-up (6; 12) of a second plurality of layers (6a-6d; 12a-12d). The first and second lay-ups (1, 6; 12) are positioned on different sides (5, 7) of a mandrel (4) and formed to a beam structure by bending the lay-ups (1, 6; 12) against the mandrel (4), such that the side edges of the respective layers (1a-1d, 6a-6d; 12a-12d) of the first and second lay-ups (1, 6; 12) are arranged as offset butt joints (9) in the circumferential direction of the formed beam structure (11).