MACHINING OF CERAMIC MATRIX COMPOSITE DURING PREFORMING AND PARTIAL DENSIFICATION
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United States of America Patent
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Issued Date -
Sep 7, 2023
app pub date -
Apr 21, 2023
filing date -
Dec 3, 2021
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Abstract
A method of forming an aerodynamic component for use in a gas turbine engine using ceramic matrix composites (CMCs) is provided. The method includes executing a full densification of the CMCs once a final shape of the aerodynamic component is achieved, identifying first and second sectors of an exterior surfaces of the aerodynamic component which have a surface roughness of less than a first roughness level and identifying second sectors of the exterior surface of the component which have a surface roughness of greater than a second roughness level, machining the first sectors to increase the surface roughness to greater than the first roughness level and machining the second sectors to decrease the surface roughness to less than the second roughness level.
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