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Title: Wind turbine blade testing system using base excitation

Abstract

An apparatus (500) for fatigue testing elongate test articles (404) including wind turbine blades through forced or resonant excitation of the base (406) of the test articles (404). The apparatus (500) includes a testing platform or foundation (402). A blade support (410) is provided for retaining or supporting a base (406) of an elongate test article (404), and the blade support (410) is pivotally mounted on the testing platform (402) with at least two degrees of freedom of motion relative to the testing platform (402). An excitation input assembly (540) is interconnected with the blade support (410) and includes first and second actuators (444, 446, 541) that act to concurrently apply forces or loads to the blade support (410). The actuator forces are cyclically applied in first and second transverse directions. The test article (404) responds to shaking of its base (406) by oscillating in two, transverse directions (505, 507).

Inventors:
; ; ; ;
Issue Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1128689
Patent Number(s):
8677827
Application Number:
12/747,487
Assignee:
Alliance for Sustainable Energy, LLC (Golden, CO)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01M - TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES
F - MECHANICAL ENGINEERING F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04 F05B - INDEXING SCHEME RELATING TO MACHINES OR ENGINES OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, TO WIND MOTORS, TO NON-POSITIVE DISPLACEMENT PUMPS, AND TO GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY
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DOE Contract Number:  
AC36-08GO28308
Resource Type:
Patent
Resource Relation:
Patent File Date: 2008 Dec 12
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Cotrell, Jason, Thresher, Robert, Lambert, Scott, Hughes, Scott, and Johnson, Jay. Wind turbine blade testing system using base excitation. United States: N. p., 2014. Web.
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Cotrell, Jason, Thresher, Robert, Lambert, Scott, Hughes, Scott, & Johnson, Jay. Wind turbine blade testing system using base excitation. United States.
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Cotrell, Jason, Thresher, Robert, Lambert, Scott, Hughes, Scott, and Johnson, Jay. Tue . "Wind turbine blade testing system using base excitation". United States. https://www.osti.gov/servlets/purl/1128689.
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@article{osti_1128689,
title = {Wind turbine blade testing system using base excitation},
author = {Cotrell, Jason and Thresher, Robert and Lambert, Scott and Hughes, Scott and Johnson, Jay},
abstractNote = {An apparatus (500) for fatigue testing elongate test articles (404) including wind turbine blades through forced or resonant excitation of the base (406) of the test articles (404). The apparatus (500) includes a testing platform or foundation (402). A blade support (410) is provided for retaining or supporting a base (406) of an elongate test article (404), and the blade support (410) is pivotally mounted on the testing platform (402) with at least two degrees of freedom of motion relative to the testing platform (402). An excitation input assembly (540) is interconnected with the blade support (410) and includes first and second actuators (444, 446, 541) that act to concurrently apply forces or loads to the blade support (410). The actuator forces are cyclically applied in first and second transverse directions. The test article (404) responds to shaking of its base (406) by oscillating in two, transverse directions (505, 507).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {3}
}
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Works referenced in this record:

Structural health monitoring of wind turbine blades
conference, May 2008

  • Rumsey, Mark A.; Paquette, Joshua A.
  • The 15th International Symposium on: Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, SPIE Proceedings
  • https://doi.org/10.1117/12.778324
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