Method for making a profile section made of composite material fibers and having a cross-section in the shape of a half of a nail head or of a nail head

Abstract

The invention relates to a method for making a profile section made of fibers (32) and intended for filling a space, having a cross-section in the shape of a nail head or of a half of a nail head resulting from the assembly of preforms in a T shape, at least one of said performs having a radius of curvature at the junction area of said preforms, characterized in that the method consists of feeding fibers (28) coated with a powder to a preforming station (30) at which said powder is activated and said fibers (28) move in a passage, the shapes of which are adapted to those of the desired profile section, and then moving said preformed fibers in a shaping station (34) at which said fiber profile section (32) is cooled and shapeed by passing into a cavity, the shapes of which are adapted to those of the desired profile section.

Description

technical field [0001] The invention relates to a method for the manufacture of fiber profiles of composite material with a half-nailhead or nailhead cross-section. The invention also relates to a device for carrying out the method and to the profile obtained therefrom. Background technique [0002] Certain composite components are produced by assembling a prefabricated product of fiber reinforcement, placing it in a mold, and then dipping it into a negative resin mold. [0003] according to figure 1 In the first embodiment shown, three prefabricated products are assembled in order to obtain the T shape, the first prefabricated product 10 is referred to as a substantially planar base, while the other two are symmetrically arranged L L-shaped pre-processed products 12, 12', each L-shaped pre-processed product has a first wing attached to a wing of another L-shaped pre-processed product and a first wing attached to the base 10 Two wings. The L-shaped pre-processed product ...

AI Technical Summary

Problems solved by technology

[0007] This embodiment is not ideal because it is not possible to achieve a good filling of the space 14 or the space 26 in view of the substantially circular cross-section of the strands

Cavities that are not filled present preferential pathways for resin that interfere with mold filling, thus increasing the likelihood of highly porous and / or dry areas

[0008] According to another defect, such as image 3 As shown, when assembling the prefabricated product or when closing the mould, the prefabricated by-product deforms around the strand 27 used to fill the space 14 or the space 26, which affects the thus achieved Mechanical Properties of Components

Images