Patent ID: 9533481
Date: 2017-01-03
CPC Classifications: B29C,B29D,B32B,Y02T

Claim:
1. A method for manufacturing a composite material part comprising a web and at least one flange comprising the following stages: a laying up stage which comprises a step of laying up a plurality of plies of different orientations, including 0° oriented plies, to obtain a flat laminate with edges comprising an outer contour and an inner contour, the flat laminate also comprising at least one section with a radius of curvature of less than 10 m, and a forming stage which comprises forming a fold along a folding line on the flat laminate to create a flange forming an angle with the web, the forming stage additionally comprising a step of applying a stress tension to the 0° oriented plies located at least partially between the folding line and the outer contour of the flat laminate in the at least one section with a radius of curvature of less than 10 m to avoid the appearance of wrinkles, wherein the 0° oriented plies located at least partially between the folding line and the outer contour of the flat laminate in the at least one section with a radius of curvature of less than 10 m extend laterally on both sides beyond the edges of the flat laminate.