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US 11,933,195 B2Granted
Gas turbine engine with pre-conditioned ceramic matrix composite components
AssigneesROLLS-ROYCE plc, Rolls-Royce High Temperature Composites Inc.
InventorsMichael J. Whittle, Louise J. Gale, Stephan J. Pattison, Anthony G. Razzell, Ian M. Edmonds, Michael G. Abbott
Life of this patent
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Abstract
A method of treating a component adapted for use in a gas turbine engine is described herein. The component may comprise ceramic matrix composite materials. The treatment to the ceramic matrix composite component may reduce or eliminate the wear or damage of crack propagation in the ceramic matrix composite component.
Claims10
A component adapted for use in a gas turbine engine, the component comprising
- a body comprising ceramic matrix composite material having a peak-stress region and an off-peak stress region, and
- a strain concentration feature located at the off-peak stress region and configured to cause stresses to form in the off-peak stress region instead of at the peak-stress region to reduce stress at the peak-stress region.
A component adapted for use in a gas turbine engine, the component comprising
- a body comprising ceramic matrix composite material having a peak-stress region and an off-peak stress region, and
- a first strain concentration feature comprising ceramic matrix composite material located at the off-peak stress region and configured to cause stresses to form in the off-peak stress region instead of at the peak-stress region to reduce stress at the peak-stress region, wherein the first strain concentration feature includes a first discrete band integrally formed with the body and protruding outward from the body such that the first strain concentration feature defines a rib that extends along a portion of the body.
Dependencies are inferred from the claim text.