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3-D fabrics and fabric preforms for composites having integrated systems, devices, and/or networks

a technology of fabric preforms and composites, applied in the field of fabric materials, can solve the problems of reducing the detectability of systems/devices, interference with on-board computers, and much higher potential to become a considerable local origin of disturbance, and all described optical fiber architectures in the invented composite are limited to two-dimensional woven architectures

Inactive Publication Date: 2005-07-07
ALEXANDER BOGDANOVICH +1
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Problems solved by technology

Besides, the use of fiber optics to replace conventional electric wires reduces the intensity of propagating electromagnetic waves, which results in reduced detectability of the system / device and interference with on-board computers.
On the other hand, an EFPI sensor (which is a complex device itself), after it is integrated in the composite material, has much higher potential to become a considerable local origin of disturbance than a BG sensor (due to the latter one is mechanically indistinguishable from its carrying optical fiber).
Importantly, all described optical fiber architectures in the invented composite are limited to two-dimensional woven architectures.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • 3-D fabrics and fabric preforms for composites having integrated systems, devices, and/or networks
  • 3-D fabrics and fabric preforms for composites having integrated systems, devices, and/or networks
  • 3-D fabrics and fabric preforms for composites having integrated systems, devices, and/or networks

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Embodiment Construction

and illustrative material do not indicate that any type of fiber architecture other than a unidirectional fiber placement or generic 2-D woven architecture, has been intended in the invention.

[0018] U.S. Pat. No. 4,836,030 describes the method of embedding a plurality of optical fibers in the composite material in pre-determined two-dimensional configuration (a serpentine pattern, specifically). Detection of light passing through any given optical fiber indicates that the composite is free of damage in the area along the extent of that optical fiber; however, integrating optical fibers within a fabric structure that is a 2-D woven structure or the like, where fiber paths are typically non-orthogonal and not substantially straight due to necessary crimping, prevents the integration of these fibers within the fabric itself. A layer of film adhesive is formed, in which optical fibers are embedded. The film adhesive layers are incorporated in composite laminate at the time of its manufa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

A 3-D fabric preform for composites including a three-dimensional engineered fiber preform formed by intersecting yarn system components; and at least one system, device, and / or network integrated with the preform for providing a predetermined function, wherein the at least one system, device, and / or network is introduced prior to formation of a composite structure including the preform, thereby providing a 3-D fabric preform for composites. Also, a method for forming the 3-D fabric preform for composites including a three-dimensional engineered fiber preform formed by intersecting yarn system components; and at least one system, device, and / or network integrated with the preform for providing a predetermined function, wherein the at least one system, device, and / or network is introduced prior to formation of a composite structure including the preform, thereby providing a 3-D fabric preform for composites.

Description

BACKGROUND OF THE INVENTION [0001] (1) Field of the Invention [0002] The present invention relates generally to fabric materials and, more particularly, to fabric preforms used for composites further including sensors, devices, and / or networks. [0003] (2) Description of the Prior Art [0004] Composites are materials formed from a plurality of components combined to form an integral structure. Typically, fabrics referred to as preforms are used within a composite structure provide a supporting framework for the composite, with a resinous material added thereto for filling interstitial regions and for providing a more amorphous component for transforming an otherwise non-stiff fabric preform into a rigid component for further shaping, machining, or other processing. The name “fiberglass” is a common slang term for one such composite material, but many other composite materials employ fabrics as preforms, including metal matrix, and carbon or ceramic matrix composites. [0005] Prior art ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): B27N3/10G06F
CPCC08L2201/12D03D1/0088D03D25/005Y10T428/24058D10B2401/046D10B2401/20D10B2101/12B29C70/24B29C70/88Y10T442/3195Y10T442/322Y10T442/3325Y10T442/3366
Inventor ALEXANDER, BOGDANOVICHDON, WIGENT
Owner ALEXANDER BOGDANOVICH
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