Integral ceramic matrix composite fastener with polymer rigidization
AssigneeUnited Technologies Corporation
InventorDavid C. Jarmon
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Abstract
A method of forming an integral fastener for a ceramic matrix composite component comprises the steps of forming a fiber preform, applying a polymer material to the fiber preform to form a rigid preform structure, machining an opening in the rigid preform structure, forming a fiber fastener, inserting the fiber fastener into the opening, removing the polymer material, and infiltrating a matrix material into the rigid preform structure and fiber fastener to form a ceramic matrix composite component with an integral fastener. A gas turbine engine is also disclosed.
Claims21
A method of forming an integral fastener for a ceramic matrix composite component comprising the steps of:
- (a) forming a fiber preform;
- (b) applying a polymer material to the fiber perform to form a rigid perform structure;
- (c) machining an opening in the rigid preform structure;
- (d) forming a fiber fastener;
- (e) inserting the fiber fastener into the opening;
- (f) removing the polymer material;
- (g) infiltrating a matrix material into the rigid preform structure and fiber fastener to form a ceramic matrix composite component with an integral fastener;
- and
- wherein step (f) includes oxidizing the polymer material from the rigid preform structure prior to step (g).
A method of forming an integral fastener for a ceramic matrix composite component comprising the steps of:
- (a) forming a fiber preform;
- (b) rigidizing the preform with a polymer based material to provide a rigid preform structure;
- (c) machining an opening in the rigid preform structure;
- (d) weaving a fiber fastener;
- (e) inserting the fiber fastener into the opening;
- (f) oxidizing the rigid perform structure to remove the polymer based material;
- and
- (g) infiltrating a matrix material into the rigid preform structure and fiber fastener to form a ceramic matrix composite component with an integral fastener.
Dependencies are inferred from the claim text.