The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 2015
Filed:
Sep. 04, 2009
James Dale Steibel, Mason, OH (US);
Douglas Melton Carper, Trenton, OH (US);
Suresh Subramanian, Mason, OH (US);
Stephen Mark Whiteker, Covington, KY (US);
James Dale Steibel, Mason, OH (US);
Douglas Melton Carper, Trenton, OH (US);
Suresh Subramanian, Mason, OH (US);
Stephen Mark Whiteker, Covington, KY (US);
General Electric Company, Schenectady, NY (US);
Abstract
A method for forming a ceramic matrix composite (CMC) component for gas turbine engines. The method contemplates replacing a plurality of plies with insert material. The insert material can be partially cured or pre-cured and applied in place of a plurality of small plies or it may be inserted into cavities of a component in the form of a paste or a ply. The insert material is isotropic, being formed of a combination of matrix material and chopped fibers, tow, cut plies or combinations thereof. The use of the insert material allows for features such as thin edges () with thicknesses of less than about 0.030 inches and small radii such as found in corners (). The CMC components of the present invention replace small ply inserts cut to size to fit into areas of contour change or thickness change, and replace the small ply inserts with a fabricated single piece discontinuously reinforced composite insert, resulting in fewer defects, such as wrinkles, and better dimensional control.