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Title: Wind turbine blade with viscoelastic damping

A wind turbine blade (60) damped by viscoelastic material (54, 54A-F) sandwiched between stiffer load-bearing sublayers (52A, 52B, 56A, 56B) in portions of the blade effective to damp oscillations (38) of the blade. The viscoelastic material may be located in one or more of: a forward portion (54A) of the shell, an aft portion (54D) of the shell, pressure and suction side end caps (54B) of an internal spar, internal webbing walls (54C, 54E), and a trailing edge core (54F).
Inventors:
;
Issue Date:
OSTI Identifier:
1338922
Assignee:
SIEMENS ENERGY, INC. (Orlando, FL) DOEEE
Patent Number(s):
9,541,061
Application Number:
14/195,935
Contract Number:
EE0005493
Resource Relation:
Patent File Date: 2014 Mar 04
Research Org:
SIEMENS ENERGY, INC. Orlando, FL (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; 36 MATERIALS SCIENCE

Other works cited in this record:

Vibration Absorber
patent, June 1986

Rotor blade internal damper
patent, May 1982

Method for fabricating wind turbine blades
patent, November 1982

Mixing apparatus
patent, February 1988

Automotive sound-proof materials and damping materials therefor
patent, March 1992

Viscoelastic vibration damper for engine struts
patent, October 1994

Wind turbine blade with u-shaped oscillation damping means
patent, September 2003

Lightweight structural damping assembly
patent, November 2007

Damping material, damping arrangement and method for designing a damping arrangement
patent, November 2007

Damping element for a wind turbine rotor blade
patent, October 2010

Method for fabricating elongated airfoils for wind turbines
patent, March 2011

Sparcap for wind turbine rotor blade and method of fabricating wind turbine rotor blade
patent, May 2011

Wind turbine blade with damping element
patent, August 2011

Internally-damped airfoil and method therefor
patent, May 2012

Blade having a damping element and method of fabricating same
patent, September 2012

Blade made of composite material comprising a damping device
patent, August 2013

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