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US 11,885,264 B2Granted
Acoustic cores with sound-attenuating protuberances
AssigneeGeneral Electric Company
InventorsWendy Wenling Lin, Shanmugam Murugappan, Robert William Davidoff, Graham Frank Howarth, Andrew Michael Roach
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Abstract
An acoustic core has a plurality of cell walls formed of an additive-manufacturing material and a resonant space defined by the plurality of cell walls. At least some of the resonant cells have sound-attenuating protuberances formed of an excess amount of the additive-manufacturing material having been intentionally introduced to the cell walls and protruding into the resonant space with a semi-random orientation and/or size.
Claims20
An acoustic core, comprising:
- an array of resonant cells, wherein respective ones of the resonant cells comprise a plurality of cell walls formed of an additive-manufacturing material and a resonant space defined by the plurality of cell walls, and wherein at least some of the resonant cells comprise sound-attenuating protuberances, the sound-attenuating protuberances comprising an excess amount of the additive-manufacturing material having been intentionally introduced to the cell walls and protruding into the resonant space with a semi-random orientation and/or size.
A turbomachine comprising:
- a turbine;
- and
- a housing surrounding the turbine, the housing defining a duct wall;
- and
- one or more acoustic liners disposed annularly along the duct wall, at least one of the one or more acoustic liners comprising an acoustic core, the acoustic core comprising:
- an array of resonant cells, wherein respective ones of the resonant cells comprise a plurality of cell walls formed of an additive-manufacturing material and a resonant space defined by the plurality of cell walls, and wherein at least some of the resonant cells comprise sound-attenuating protuberances, the sound-attenuating protuberances comprising an excess amount of the additive-manufacturing material having been intentionally introduced to the cell walls and protruding into the resonant space with a semi-random orientation and/or size.
3 more elements
Dependencies are inferred from the claim text.