US 12,215,592 B1
Preform for making a casing structure for turbine engines
Ming Xie, Dayton, OH (US); Mingchao Wang, West Chester, OH (US); Douglas Lorrimer Armstrong, Needham, MA (US); and Mitchell Boyer, Cincinnati, OH (US)
Assigned to GENERAL ELECTRIC COMPANY, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Feb. 7, 2024, as Appl. No. 18/435,191.
Int. Cl. F01D 25/24 (2006.01); F01D 25/00 (2006.01)
CPC F01D 25/243 (2013.01) [F01D 25/005 (2013.01); F05D 2240/14 (2013.01); F05D 2300/603 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A preform for making a casing structure, the preform comprising:
a plurality of reinforcing fiber tows arranged in a two-dimensional weave structure, a three-dimensional weave structure, or a braided structure,
wherein the plurality of reinforcing fiber tows comprise integrally woven or braided fiber tows having a diameter or a density greater than a respective diameter or density of other woven or braided fiber tows in the two-dimensional weave structure, the three-dimensional weave structure, or the braided structure so as to provide strength and rigidity to the two-dimensional weave structure, the three-dimensional weave structure, or the braided structure in an area of the preform that is bent to form an angled corner of a casing structure, and
wherein the integrally woven or braided fiber tows are located in the area of the preform that is bent to form the angled corner of the casing structure to thereby provide strength and rigidity to the angled corner of the casing structure.