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Composite articles having fibers with longitudinally-varying geometry

A technology of composite products and geometric shapes, which is applied in the direction of ceramic layered products, synthetic resin layered products, glass/slag layered products, etc., and can solve problems such as matrix damage

Active Publication Date: 2013-10-30
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the matrix is ​​usually weaker than the fibers so that when a sufficiently high load is transferred across the matrix from one fiber to another, the matrix will fail

Method used

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  • Composite articles having fibers with longitudinally-varying geometry
  • Composite articles having fibers with longitudinally-varying geometry
  • Composite articles having fibers with longitudinally-varying geometry

Examples

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Embodiment Construction

[0066] Referring now to the drawings, in which the drawings are for purposes of illustrating the preferred and various embodiments of the present disclosure, figure 1 Composite article 10 is shown. The composite article 10 may be fabricated as a fiber-reinforced composite panel 14 comprising a matrix 18 and a plurality of fibers 22 embedded in the matrix 18 . Advantageously, the fibers 22 have a fiber geometry 32 that varies along the length of the fibers 22 . Variations in fiber geometry 32 along fiber length 34 of fiber 22 may facilitate mechanical bonding (eg, fiber-matrix bonding) between fiber 22 and matrix 18 . Variations in fiber geometry 32 along fiber length 34 of fibers 22 may also facilitate mechanical bonding 22 (eg, fiber-to-fiber bonding) between adjacent fibers in the same layer 20 and / or between fibers 22 in different layers 20 .

[0067] Fiber-matrix mechanical bonding may provide a means of controlling movement or sliding of fibers 22 relative to matrix 18 ...

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PUM

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Abstract

A composite article may include a matrix and a plurality of fibers embedded in the matrix. Each one of the fibers has a fiber length and a fiber geometry. The fiber geometry of at least a portion of the fibers may vary along the fiber length.

Description

technical field [0001] The present disclosure relates generally to composite materials, and more particularly to fiber-reinforced composite articles having improved ballistic and optical properties. Background technique [0002] Composite structures typically include a matrix reinforced with fibers in which the fibers are embedded. Composite structures are typically designed to transmit loads along the length of the fibers. The load from one fiber can be transferred to another fiber in the same layer or to fibers in an adjacent layer by passing through the matrix material. However, the matrix is ​​generally weaker than the fibers so that when a sufficiently high load is transferred across the matrix from one fiber to another, the matrix will fail. The disruption of the matrix allows the fibers to move within the composite structure. [0003] During a ballistic event in which a composite panel is impacted by a projectile, the ability of the fibers to move within the matrix...

Claims

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Application Information

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IPC IPC(8): B32B5/26
CPCB29C70/083Y02T50/43Y02T50/433B29C70/16B29C70/545Y10T428/2922Y10T29/49863Y10T428/2976Y10T428/249928Y10T428/24994Y10T428/249924Y02T50/40F16S1/10B64C1/00B32B5/28B32B17/067B32B18/00B32B27/04F41H5/04
Inventor M·P·科扎M·S·威伦斯基
Owner THE BOEING CO