公开(公告)号：US20240400467A1

公开(公告)日：2024-12-05

申请号：US18205079

申请日：2023-06-02

Applicant: Raytheon Technologies Corporation

Inventor： John D. Riehl ,  Brendan Lenz ,  Zachary Paul Konopaske ,  Olivier H. Sudre ,  Nil Parikh ,  Sarah Annette Frith

IPC: C04B41/87 ,  C04B35/622 ,  C04B41/45 ,  C04B41/50

Abstract: A method of forming a ceramic matrix composite includes preparing a plurality of fibrous ceramic plies by applying a binder solution loaded with ceramic particles to each of a first subset of plies, and applying the binder solution without ceramic particles to each of a second subset of plies. The method further includes arranging the plurality of plies to form a preform with a gradient along a thickness direction of the preform by stacking the first subset of plies to form a first zone of the preform, and stacking individual ones of the second subset of the plies on both sides of the first zone to form a second zone on each side of the first zone. Loading of the ceramic particles is higher in the first zone than in the second zones. The method further includes densifying the preform with a ceramic matrix.

公开(公告)号：US12173431B2

公开(公告)日：2024-12-24

申请号：US18082819

申请日：2022-12-16

Applicant: Raytheon Technologies Corporation

Inventor： Olivier H. Sudre ,  Sarah Annette Frith ,  John E. Holowczak ,  Mary Colby ,  Ying She ,  Kathryn S. Read

IPC: D02J1/18 ,  D02J1/16 ,  D03D13/00 ,  D03D15/242 ,  D06C29/00

Abstract: A method of spreading fiber tows includes applying a coupling medium to a surface of a fibrous structure, positioning an ultrasonic probe adjacent to the surface of a fibrous structure, such that a tip of the ultrasonic probe is in contact with the coupling medium, moving at least one of the ultrasonic probe and the fabric structure relative to the other of the ultrasonic probe and the fibrous structure according to a first pattern, and imparting ultrasonic vibration with the ultrasonic probe to the surface of the fibrous structure while moving the ultrasonic probe along the surface of the fibrous structure. Imparting ultrasonic vibration to the surface of the fibrous structure spreads tows of the fibrous structure.

公开(公告)号：US20230193525A1

公开(公告)日：2023-06-22

申请号：US18082819

申请日：2022-12-16

Applicant: Raytheon Technologies Corporation

Inventor： Olivier H. Sudre ,  Sarah Annette Frith ,  John E. Holowczak ,  Mary Colby ,  Ying She ,  Kathryn S. Read

IPC: D02J1/18 ,  D02J1/16 ,  D03D13/00 ,  D03D15/242

CPC classification number: D02J1/18 ,  D02J1/16 ,  D03D13/00 ,  D03D15/242

Abstract: A method of spreading fiber tows includes applying a coupling medium to a surface of a fibrous structure, positioning an ultrasonic probe adjacent to the surface of a fibrous structure, such that a tip of the ultrasonic probe is in contact with the coupling medium, moving at least one of the ultrasonic probe and the fabric structure relative to the other of the ultrasonic probe and the fibrous structure according to a first pattern, and imparting ultrasonic vibration with the ultrasonic probe to the surface of the fibrous structure while moving the ultrasonic probe along the surface of the fibrous structure. Imparting ultrasonic vibration to the surface of the fibrous structure spreads tows of the fibrous structure.