Title: Damping coating with a constraint layer

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.

Inventors:

Zhang, James; Delvaux, John McConnell

Issue Date:

2022-02-08

Research Org.:

General Electric Co., Schenectady, NY (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1892595

Patent Number(s):

11242756

Application Number:

16/865,999

Assignee:

General Electric Company (Schenectady, NY)

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B32 - LAYERED PRODUCTS B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

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B - PERFORMING OPERATIONS B32 - LAYERED PRODUCTS B32B - LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM

B32B2307/51 - Elastic
B32B2603/00 - Vanes, blades, propellers, rotors with blades
B32B9/041 - {of metal}

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01D - NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES

F01D5/147 - {Construction, i.e. structural features, e.g. of weight-saving hollow blades
F01D5/16 - for counteracting blade vibration
F01D5/225 - {by shrouding}
F01D5/26 - Antivibration means not restricted to blade form or construction or to blade-to-blade connections {or to the use of particular materials}
F01D5/282 - {Selecting composite materials, e.g. blades with reinforcing filaments}
F01D5/288 - {Protective coatings for blades}

F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05D - INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

F05D2220/32 - in gas turbines
F05D2230/90 - Coating
F05D2240/307 - related to the tip of a rotor blade
F05D2260/96 - Preventing, counteracting or reducing vibration or noise
F05D2300/611 - Coating

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DOE Contract Number:  

FE0031613

Resource Type:

Patent

Resource Relation:

Patent File Date: 05/04/2020

Country of Publication:

United States

Language:

English