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Method for promoting electrical conduction between metallic components and composite materials

A metal parts, electrical conductivity technology, applied in chemical instruments and methods, conductive coatings, vehicle parts, etc., can solve problems such as reducing the mechanical properties of fasteners

Pending Publication Date: 2018-03-23
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, liquid metals tend to form brittle intermetallic compounds with titanium and other structural metals that can severely degrade the mechanical properties of fasteners

Method used

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  • Method for promoting electrical conduction between metallic components and composite materials
  • Method for promoting electrical conduction between metallic components and composite materials
  • Method for promoting electrical conduction between metallic components and composite materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0068] 1. A method of enhancing conductance comprising:

[0069] The composite body is coated with an adhesive layer comprising a conductive material, wherein when the metal part is attached to the composite body, the metal part is electrically connected to the conductive material of the adhesive layer.

[0070] 2. The method according to clause 1, wherein the composite body is an aircraft or other vehicle structure composed of a composite material formed from carbon fiber reinforced polymer (CFRP), the metal parts being fasteners, and electrically connected to the adhesive layer Metal parts of conductive material that form part of a lightning strike protection system, electromagnetic effects (EME) management system, or grounding system.

[0071] 3. The method of clause 1, wherein the metal part comprises a sleeve, washer, or other element placed at the interface between the fastener and the composite body.

[0072] 4. The method of clause 1, wherein the adhesive layer compri...

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PUM

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Abstract

A method for promoting electrical conduction between metallic components and composite materials. A composite body is coated with an adhering layer comprising a conductive material, and a metallic component is electrically connected to the conductive material of the adhering layer, when the metallic component is coupled to the composite body. The adhering layer is deposited inside a hole in the composite body, and / or along an edge of the hole, and / or on at least a portion of a surface of the composite body. The composite body is a structure of an aircraft or other vehicle comprised of composite materials formed from carbon fiber-reinforced polymers (CFRPs), the metallic component is a fastener or is positioned at an interface between the fastener and the composite body, and the electricalconnection is made as part of a lightning protection system, an electromagnetic effects (EME) management system, or grounding system.

Description

technical field [0001] The present invention generally relates to methods for promoting electrical conduction between metallic parts and composite materials. Background technique [0002] Lightning strike protection and electromagnetic effects (EME) management systems are used in aircraft to prevent arcing or sparking in or near fuel tanks, as well as electrical damage to other parts of the aircraft. Such systems not only dissipate lightning strikes, they provide electrical shielding, grounding and surge suppression. [0003] In the past, most aircraft were composed of aluminum, which conducts electricity very well. However, modern aircraft use advanced composite materials, such as carbon fiber reinforced polymer (CFRP), which conduct electricity poorly. Therefore, conductive paths must be designed for such materials to carry electrical current. [0004] It would be desirable to provide any solution to these problems utilizing composite materials at low cost and low weigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D37/32B64D45/02C09D5/24C09D11/52
CPCB64D37/32B64D45/02C09D5/24C09D11/52B32B7/14B32B27/20B32B2255/10B32B2262/106B32B2307/202B32B2605/18
Inventor A·C·戴C·R·麦基弗D·尼基奇
Owner THE BOEING CO
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