The Resource Evaluation of the new B-REX fatigue testing system for multi-megawatt wind turbine blades : preprint, D. White, W. Musial, and S. Engberg, (electronic resource)

Evaluation of the new B-REX fatigue testing system for multi-megawatt wind turbine blades : preprint, D. White, W. Musial, and S. Engberg, (electronic resource)

Label
Evaluation of the new B-REX fatigue testing system for multi-megawatt wind turbine blades : preprint
Title
Evaluation of the new B-REX fatigue testing system for multi-megawatt wind turbine blades
Title remainder
preprint
Statement of responsibility
D. White, W. Musial, and S. Engberg
Creator
Contributor
Subject
Language
eng
Summary
The National Renewable Energy Laboratory (NREL) recently developed a new hybrid fatigue testing system called the Blade Resonance Excitation (B-REX) test system. The new system uses 65% less energy to test large wind turbine blades in half the time of NREL's dual-axis forced-displacement test method with lower equipment and operating costs. The B-REX is a dual-axis test system that combines resonance excitation with forced hydraulic loading to reduce the total test time required while representing the operating strains on the critical inboard blade stations more accurately than a single-axis test system. The analysis and testing required to fully implement the B-REX was significant. To control unanticipated blade motion and vibrations caused by dynamic coupling between the flap, lead-lag, and torsional directions, we needed to incorporate additional test hardware and control software. We evaluated the B-REX test system under stable operating conditions using a combination of various sensors. We then compared our results with results from the same blade, tested previously using NREL's dual-axis forced-displacement test method. Experimental results indicate that strain levels produced by the B-REX system accurately replicated the forced-displacement method. This paper describes the challenges we encountered while developing the new blade fatigue test system and the experimental results that validate its accuracy
Member of
Cataloging source
DOX
http://library.link/vocab/creatorName
White, Darris
Government publication
federal national government publication
Index
no index present
Literary form
humor satires etc
Nature of contents
dictionaries
http://library.link/vocab/relatedWorkOrContributorName
  • Musial, Walter D
  • Engberg, Scott
  • National Renewable Energy Laboratory (U.S.)
Series statement
Conference paper
Series volume
NREL/CP-500-37075
http://library.link/vocab/subjectName
  • Fatigue testing machines
  • Wind turbines
  • Turbines
Label
Evaluation of the new B-REX fatigue testing system for multi-megawatt wind turbine blades : preprint, D. White, W. Musial, and S. Engberg, (electronic resource)
Link
Instantiates
Publication
Note
  • Title from title screen (viewed on June 8, 2006)
  • "December 2004."
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Extent
14 pages
Form of item
electronic
Media category
computer
Media MARC source
rdamedia
Media type code
c
Other physical details
digital, PDF file.
System control number
  • ocm68229854
  • (GPO)99191174
System details
Mode of access: Internet from the NREL web site. Address as of 6/8/06: http://www.nrel.gov/docs/fy05osti/37075.pdf; current access available via PURL
Label
Evaluation of the new B-REX fatigue testing system for multi-megawatt wind turbine blades : preprint, D. White, W. Musial, and S. Engberg, (electronic resource)
Link
Publication
Note
  • Title from title screen (viewed on June 8, 2006)
  • "December 2004."
Carrier category
online resource
Carrier category code
cr
Carrier MARC source
rdacarrier
Content category
text
Content type code
txt
Content type MARC source
rdacontent
Extent
14 pages
Form of item
electronic
Media category
computer
Media MARC source
rdamedia
Media type code
c
Other physical details
digital, PDF file.
System control number
  • ocm68229854
  • (GPO)99191174
System details
Mode of access: Internet from the NREL web site. Address as of 6/8/06: http://www.nrel.gov/docs/fy05osti/37075.pdf; current access available via PURL

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