Torsional Performance of Wind Turbine Blades: Part I: Experimental Investigation

Peter Berring, Kim Branner, Christian Berggreen, Henrik W. Knudsen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

The complete 3D static responses of two different eight meter long wind turbine blade sections were tested. To experimentally investigate the 3D response, an advanced 3D digital optical deformation measuring system (ARAMIS 2M and 4M) was applied in this work. This system measures the full-field displacements (ux, uy and uz) of the blade surface. A least squares algorithm was developed, which fits a plane through each deformed cross section, and defines a single set of displacements and rotations (three displacements and rotations) per cross section. This least squares algorithm was also used to accommodate problems with a flexible boundary condition by determining the displacements and rotations for a cross section near the boundary. These displacements and rotations are subtracted from all other cross sections along the blade and thereby making the blade section fully fixed at the chosen cross section near the boundary.
Original languageEnglish
Title of host publicationSixteenth International Conference on Composite Materials : A Giant Step towards Environmental Awareness: From Green Composites to Aerospace
EditorsKazuro Kageyama, Takashi Ishikawa, Nobuo Takeda, Masaki Hojo, Sunao Sugimoto, Toshio Ogasawara
Number of pages1432
Volume2
Place of PublicationTokyo, Japan
PublisherJapan Society for Composite Materials
Publication date2007
ISBN (Print)978-4-931136-06-9
Publication statusPublished - 2007
Event16th International Conference on Composite Materials: A Giant Step towards Environmental Awareness: From Green Composites to Aerospace - Kyoto, Japan
Duration: 8 Jul 200713 Jul 2007
Conference number: 16
http://www.jscm.gr.jp/conference/iccm-16/conference_topics/index.html

Conference

Conference16th International Conference on Composite Materials
Number16
CountryJapan
CityKyoto
Period08/07/200713/07/2007
Internet address

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