Acoustic cores with sound-attenuating protuberances

US11885264B2 · kind B2 · utility

Assignee

• General Electric Company · US

Inventors

• Wendy Wenling Lin · Montgomery, US
• Shanmugam Murugappan · Mason, US
• Robert William Davidoff · Greenville, US
• Graham Frank Howarth · Middletown, US
• Andrew Michael Roach · Aberdeen, US

Key dates

• Filing date: May 28, 2021
• Grant date: Jan 30, 2024
• Expiry date: Jul 28, 2042

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49323
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

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.