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:
Jan. 22, 2013
Filed:
Jul. 16, 2008
Jay A. Morrison, Oviedo, FL (US);
Jay E. Lane, Mooresville, IN (US);
Jay A. Morrison, Oviedo, FL (US);
Jay E. Lane, Mooresville, IN (US);
Siemens Energy, Inc., Orlando, FL (US);
Abstract
A stitching geometry and method for selective interlaminar reinforcement of a CMC wall (A). The CMC wall is formed of ceramic fiber layers () individually infused with a ceramic matrix, stacked, and at least partially cured. A row of holes is formed in the wall, and a ceramic fiber thread () is infused with a wet ceramic matrix and passed through the holes to form stitches (). The stitches are then cured, causing them to shrink more than any remaining wall shrinkage, thus tensioning the stitches and compressing the wall laminae together. The stitches may have through-wall portions () that are angled differently in different wall areas as a function of interlaminar shear over interlaminar tension, optimizing wall reinforcement locally depending on magnitude and direction of shear. Alternate rows of stitches () may have offsets in a stitch direction () and/or different through-wall angles (A, A).