US 11,964,441 B2
Composite part with additively manufactured sub-structure
Christopher A. Howe, Albert Park (AU); Paul David Evans, Essendon (AU); Stuart Bateman, Mount Waverley (AU); and Martin Leary, Altona (AU)
Assigned to The Boeing Company, Arlington, VA (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Jan. 13, 2022, as Appl. No. 17/647,898.
Claims priority of provisional application 63/144,425, filed on Feb. 1, 2021.
Prior Publication US 2022/0242061 A1, Aug. 4, 2022
Int. Cl. B32B 7/00 (2019.01); B29C 69/02 (2006.01); B29C 70/44 (2006.01); B29C 70/70 (2006.01); B33Y 80/00 (2015.01); B29K 71/00 (2006.01); B29K 77/00 (2006.01); B29K 79/00 (2006.01); B29L 31/00 (2006.01); B29L 31/30 (2006.01)
CPC B29C 69/02 (2013.01) [B29C 70/443 (2013.01); B29C 70/70 (2013.01); B33Y 80/00 (2014.12); B29K 2071/00 (2013.01); B29K 2077/00 (2013.01); B29K 2079/08 (2013.01); B29L 2031/003 (2013.01); B29L 2031/3076 (2013.01); Y10T 428/24174 (2015.01)] 20 Claims
OG exemplary drawing
 
1. A vehicle, comprising:
a composite part comprising
a skin comprising one or more material layers;
a stiffener comprising one or more material layers, the stiffener comprising a flange and a web;
an additively manufactured sub-structure positioned between at least a portion of the skin and at least a portion of the stiffener, the additively manufactured sub-structure comprising at least one flange portion, at least one radius, and at least one radius filler, wherein one or more of the at least one flange portion and the at least one radius filler of the additively manufactured sub-structure comprises a pore space fraction of about 0.1% to about 99%; and
a polymer matrix co-infused within the skin, the stiffener, and the additively manufactured sub-structure.