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Thin-walled reinforcement lattice structure for hollow CMC buckets

United States Patent

June 27, 2017
View the Complete Patent at the US Patent & Trademark Office
A hollow ceramic matrix composite (CMC) turbine bucket with an internal reinforcement lattice structure has improved vibration properties and stiffness. The lattice structure is formed of thin-walled plies made of CMC. The wall structures are arranged and located according to high stress areas within the hollow bucket. After the melt infiltration process, the mandrels melt away, leaving the wall structure to become the internal lattice reinforcement structure of the bucket.
de Diego; Peter (Saluda, NC)
13/ 442,077
April 9, 2012
GOVERNMENT INTERESTS The subject invention was made with United States Government support under contract number DE-FC26-05NT42643 awarded by the Department of Energy. The Government has certain rights in this invention.