Forming Composite Features Using Steered Discontinuous Fiber Pre-Preg

a discontinuous fiber and composite technology, applied in the direction of process and machine control, instruments, mechanical control devices, etc., can solve the problems of inability to control local thickness/fiber orientation, inability to achieve close control of thickness and/or fiber orientation in local areas with tight contours, and inability to achieve local thickness/fiber orientation. control, the effect of optimizing the structural properties of the lamina
US20140255646A1Inactive Publication Date: 2014-09-11THE BOEING CO
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
THE BOEING CO
Publication Date
2014-09-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

Interlaminar features of a composite structure are laid up by placing and steering individual chopped fiber pre-preg segments onto a substrate.
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Description

BACKGROUND INFORMATION

[0001] 1. Field

[0002] The present disclosure generally relates to fabrication of composite laminate structures using fiber pre-preg, and deals more particularly with a method and apparatus for forming composite structural features by steering discontinuous fiber pre-preg onto a substrate with desired fiber orientations.

[0003] 2. Background

[0004] The strength, stiffness and load transfer characteristics of a composite laminate structure may be optimized through control of fiber orientation during the layup process. Conventional composite laminates may be laid up using pre-preg tapes, tows or broad goods, employing either automated fiber placement equipment or hand placement techniques to layup the material. Generally, the resulting composite structure exhibits substantially consistent structural properties throughout. In some cases, however, it may be necessary or desirable to control the thickness and / or fiber orientation in local areas of a composite laminate in o...

Claims

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