Composite material structure

The composite material structure addresses impedance challenges by incorporating conductive fibers, an adhesive layer, and electromagnetic shielding to enhance lightning resistance and prevent dielectric breakdown with a straightforward design.

JP7612498B2Active Publication Date: 2025-01-14MITSUBISHI HEAVY IND LTD
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Patent Information

Application Number
JP2021070580
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-04-19
Publication Date
2025-01-14
Estimated Expiration
2041-04-19

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Abstract

To reduce the generation of a potential difference around a joint part even when a thunder current flows due to a lightning strike or the like, and improve thunder resistance of the joint part with a simple structure.SOLUTION: A composite material structure comprises: a first composite material in which a first resin is impregnated into a first reinforcing fiber with conductivity; a second composite material in which a second resin is impregnated into a second reinforcing fiber with conductivity; an adhesive layer arranged between the first composite material and the second composite material, and adhering the first composite material and the second composite material; and an electromagnetic shield material coating at least a part of an exposed portion exposed to the outside of the adhesive layer. A thunder current direction in which a thunder current generated by a lightning strike flows is previously regulated at least for one of the first composite material and the second composite material, and the electromagnetic shield material is provided inside a surface of a lateral face to be an end face in a direction orthogonal to the thunder current direction.SELECTED DRAWING: Figure 2
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Citation Information

Patent Citations

  • Composite structures with bond lines with matched conductivity

    JP2016502477A

  • Composite material structure, and manufacturing method of composite material structure

    JP2019162823A

  • Composite structures having bondlines with matched electrical conductivity

    WO2014070313A2