US 12,089,388 B2
Composite material structure
Tatsufumi Aoi, Tokyo (JP); Kazuki Yamawaki, Tokyo (JP); Akio Ikeda, Tokyo (JP); and Hisashi Shimizu, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Apr. 15, 2022, as Appl. No. 17/721,913.
Claims priority of application No. 2021-070580 (JP), filed on Apr. 19, 2021.
Prior Publication US 2022/0338394 A1, Oct. 20, 2022
Int. Cl. H02H 1/00 (2006.01); H02G 13/00 (2006.01); H02H 1/04 (2006.01); H02H 3/22 (2006.01); H02H 9/06 (2006.01); H05K 9/00 (2006.01)
CPC H05K 9/0088 (2013.01) [H02G 13/80 (2013.01); H05K 9/002 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A composite material structure comprising:
a first composite material member including a first reinforcing fiber electrically conductive and impregnated with a first resin;
a second composite material member including a second reinforcing fiber electrically conductive and impregnated with a second resin;
an entirely electrically insulating adhesive layer between the first composite material member and the second composite material member to directly bond the first composite material member to the second composite material member; and
an electromagnetic shielding member covering at least part of an area of the adhesive layer exposed to an exterior,
wherein at least one of the first composite material member and the second composite material member has a predefined lightning current direction in which a lightning current generated by a lightning strike passes,
wherein the electromagnetic shielding member is formed as a sheet over an entire side face of the composite material structure in a direction orthogonal to the lightning current direction,
wherein the electromagnetic shielding member includes:
a conductive material allowing a current induced by the lightning current to pass therethrough, and
a magnetic material shielding a magnetic field induced by the lightning current, and
wherein the electromagnetic shielding member is a separate component from the adhesive layer, and the electromagnetic shielding member is arranged to electrically connect the first composite material member and the second composite material member across the adhesive layer to reduce generation of a potential difference around the adhesive layer.