	US 12,311,615 B2
	Flat composite panel with tear arrestment and method of making the same
Richard A. Skilton, Bothell, WA (US); Stephen T. Dougherty, Auburn, WA (US); and Daniel Paul Hope Marx, Seattle, WA (US)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Jan. 6, 2022, as Appl. No. 17/647,186.
Claims priority of provisional application 63/142,767, filed on Jan. 28, 2021.
Prior Publication US 2022/0234714 A1, Jul. 28, 2022
Int. Cl. B29C 70/08 (2006.01); B29C 70/38 (2006.01); B29C 70/68 (2006.01); B64C 1/10 (2006.01); B64F 5/10 (2017.01); B29K 63/00 (2006.01); B29K 307/04 (2006.01); B29L 31/30 (2006.01); B64C 1/00 (2006.01); B64C 1/06 (2006.01)

CPC B29C 70/08 (2013.01) [B29C 70/382 (2013.01); B29C 70/68 (2013.01); B64C 1/10 (2013.01); B64F 5/10 (2017.01); B29K 2063/00 (2013.01); B29K 2307/04 (2013.01); B29L 2031/3076 (2013.01); B64C 2001/0072 (2013.01); B64C 1/061 (2013.01)]

23 Claims

1. A composite panel having tear arrestment, comprising:

a base panel including a plurality of base panel plies of a fiber reinforced polymer;

at least a first tear strap extending in a first direction and integrated into the base panel plies, the at least first tear strap comprising a plurality of first tear strap plies interspersed along a thickness of the base panel between plies of the base panel plies; and

at least a second tear strap extending in a second direction transverse to the first direction and integrated into the base panel plies, the at least second tear strap comprising a plurality of second tear strap plies interspersed along the thickness of the base panel between the plies of the base panel plies;

wherein a fiber orientation of a ply of the first tear strap plies is orthogonal to a fiber orientation of a base panel ply that the ply of the first tear strap plies adjoins and a fiber orientation of a ply of the second tear strap plies is orthogonal to a fiber orientation of a base panel ply that the ply of the second tear strap plies adjoins.