US 11,890,836 B2
Ceramic matrix composite articles having different localized properties and methods for forming same
Matthew Hockemeyer, Saratoga Springs, NY (US); Jason David Shapiro, Methuen, MA (US); K. M. K. Genghis Khan, Niskayuna, NY (US); James Scott Vartuli, Rexford, NY (US); Daniel Gene Dunn, Guilderland, NY (US); Shatil Sinha, Clifton Park, NY (US); Douglas Decesare, Queensbury, NY (US); and Suresh Subramanian, Mason, OH (US)
Assigned to General Electric Company, Schenectady, NY (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Jun. 28, 2022, as Appl. No. 17/851,241.
Application 17/851,241 is a division of application No. 15/200,881, filed on Jul. 1, 2016, granted, now 11,383,494.
Prior Publication US 2022/0324206 A1, Oct. 13, 2022
Int. Cl. C04B 35/80 (2006.01); B32B 18/00 (2006.01); C04B 37/00 (2006.01); C04B 35/571 (2006.01); B28B 1/52 (2006.01); B28B 11/08 (2006.01); C04B 35/565 (2006.01); C04B 35/626 (2006.01); C04B 35/628 (2006.01); F01D 5/00 (2006.01); F01D 5/28 (2006.01); F01D 9/02 (2006.01); F23R 3/00 (2006.01)
CPC B32B 18/00 (2013.01) [B28B 1/522 (2013.01); B28B 11/08 (2013.01); C04B 35/565 (2013.01); C04B 35/571 (2013.01); C04B 35/6267 (2013.01); C04B 35/62884 (2013.01); C04B 35/80 (2013.01); C04B 37/001 (2013.01); F01D 5/005 (2013.01); F01D 5/282 (2013.01); F01D 9/02 (2013.01); F23R 3/007 (2013.01); B32B 2262/105 (2013.01); C04B 2235/3826 (2013.01); C04B 2235/5244 (2013.01); C04B 2235/614 (2013.01); C04B 2235/9607 (2013.01); C04B 2237/38 (2013.01); C04B 2237/584 (2013.01); F05D 2220/32 (2013.01); F05D 2230/31 (2013.01); F05D 2300/6033 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for use in forming a ceramic matrix composite article, the method comprising:
laying up a first plurality of plies comprising ceramic fibers in a ceramic matrix, the first plurality of plies defining a first extent; and
laying up at least one second ply defining a second extent on and/or in the layup of the first plurality of plies, the second extent being less than the first extent;
wherein a stack of the first plurality of plies and the at least one second ply within the e second extent defines a localized portion of the ceramic matrix composite article, and a stack of the first plurality of plies within the first extent but not within the second extent defines an exterior portion of the ceramic matrix composite article,
wherein the first plurality of plies comprises a first property, the at least one second ply comprises at least one second property, and the first property is different from the at least one second property such that stresses within the localized portion are lower than stresses within the exterior portion,
wherein the ceramic matrix composite article is a turbine component repair.