Invention Grant
- Patent Title: Damping coating with a constraint layer
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Application No.: US16865999Application Date: 2020-05-04
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Publication No.: US11242756B2Publication Date: 2022-02-08
- Inventor: James Zhang , John McConnell Delvaux
- Applicant: General Electric Company
- Applicant Address: US NY Schenectady
- Assignee: General Electric Company
- Current Assignee: General Electric Company
- Current Assignee Address: US NY Schenectady
- Agency: Hoffman Warnick LLC
- Agent Charlotte Wilson
- Main IPC: F01D5/16
- IPC: F01D5/16 ; B32B9/04 ; F01D5/22

Abstract:
A coating is applied to a base material. The coating comprises a viscoelastic layer having a surface in which cavities are formed; and a constraint layer. The viscoelastic layer is disposed on the base material, and the constraint layer is disposed on, and partially bonded, at an interface, to the viscoelastic layer over the surface in which the cavities are formed. The cavities are filled with particles configured for vibration and frictional interaction at the partially bonded interface between the partially bonded viscoelastic layer and the constraint layer. A turbine blade having an airfoil with the subject coating is also provided.
Public/Granted literature
- US20210340874A1 DAMPING COATING WITH A CONSTRAINT LAYER Public/Granted day:2021-11-04
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