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Method for obtaining a part made of a composite material including a phase of tensioning filaments, and tools for implementing same

A composite material and tool technology, applied in the field of obtaining composite material components and their implementation tools including a monofilament tensioning step, can solve the problems of reduced productivity, no solution, laying of strips, etc.

Active Publication Date: 2013-09-18
AIRBUS OPERATIONS (SAS)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solution is unsatisfactory as it leads to an increase in the number of layers to be laid, which significantly reduces productivity
Also, it doesn't address issues related to laying strips on non-deployable surfaces
[0014] Therefore, the methods of the prior art do not provide the best results in terms of quality and productivity

Method used

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  • Method for obtaining a part made of a composite material including a phase of tensioning filaments, and tools for implementing same
  • Method for obtaining a part made of a composite material including a phase of tensioning filaments, and tools for implementing same
  • Method for obtaining a part made of a composite material including a phase of tensioning filaments, and tools for implementing same

Examples

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Embodiment Construction

[0023] figure 1 and figure 2 A composite part 10 is shown having a U-shaped cross-section. For example, such a component could be used as a stringer for an aircraft wing. The thickness e of the stringer can vary from 7 to 25 mm, its height H can vary from 200 to 1500 mm, the width A of the stringer can vary from 200 to 400 mm, and its length can reach 10 m.

[0024] Of course, the invention is not limited to this application. It can be used to form different composite parts. Especially useful when parts have non-developable surfaces and / or very pronounced radii of curvature.

[0025] The component 10 is obtained from a preform 12 pre-impregnated with fibres, which has undergone a polymerization cycle. Once completed, part 10 includes reinforcing fibers embedded in a resin matrix.

[0026] In general, the fibers each consist of a plurality of monofilaments. The material of the monofilament and the resin can vary according to the application.

[0027] According to one e...

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Abstract

A method for obtaining a composite material part from a preform (12) of layers of fibers pre-impregnated with resin stacked on top of one another on a tool (18), the preform (12) being delimited by a lower surface, an upper surface(22), and a peripheral flank (24). The method includes attaching to the tool, after the last layer has been laid, a peripheral part (28) comprising a wing adapted to cover the peripheral edge of the upper surface (22), so as to create, in the periphery of the preform, a peripheral cavity (26) adjacent to the flank of the preform and, before the polymerization phase, to withdraw the gas present in the peripheral cavity (26) so as to tension filaments of the preform by exerting a traction force at the ends of the filaments.

Description

technical field [0001] The invention relates to a method for obtaining a composite material part incorporating a monofilament tensioning step and a tool for carrying out the method. Background technique [0002] Composite parts consist of fibers embedded in a resin matrix. More specifically, the present invention relates to the manufacture of composite parts from pre-impregnated fiber preforms that have undergone a polymerization cycle during which the fiber pre-forms are compressed and subjected to elevated temperatures. [0003] For some composite parts, preforms are obtained by sequentially stacking layers of pre-impregnated fibers on a convex tool, where the fibers are placed in orientation and pre-set according to the desired mechanical properties. According to one mode of operation, each layer is formed of juxtaposed fiber strips, the fibers being oriented in the direction of the individual strips. Typically, the fibers are composed of several monofilaments, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/34
CPCB29C70/44B29C70/56B32B37/16
Inventor 德尼·德马蒂亚
Owner AIRBUS OPERATIONS (SAS)
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