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
    Country/TerritoryJapan
    CityKyoto
    Period08/07/200713/07/2007
    Internet address

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