Improved design of large wind turbine blade of fibre composites based on studies of scale effects (Phase 1). Summary report

Bent F. Sørensen, E. Jørgensen, C.P. Debel, Find Mølholt Jensen, H.M. Jensen, T.K. Jacobsen, K. Halling

    Research output: Book/ReportReportResearch

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    Abstract

    The main aim of the present study was to enhance the understanding of damage evolution in wind turbine blades by a combination of structural- and material modelling. Basic damage modes were identified in wind turbines tested to failure under static and cyclic loadings. Two of the observed damage types, compression failure and crack growth along adhesive joints, were studied in details. Modelling of a load carrying composite spars as well as composite columns were performed for assessing the compressive strength. A fracture mechanics approach was developed for prediction the strength of adhesive joints. The effect of porosity on the strength of adhesive joints was also investigated.
    Original languageEnglish
    Place of PublicationRoskilde
    PublisherRisø National Laboratory
    Number of pages36
    ISBN (Print)87-550-3176-5
    ISBN (Electronic)87-550-3177-3
    Publication statusPublished - 2004
    SeriesDenmark. Forskningscenter Risoe. Risoe-R
    Number1390(EN)
    ISSN0106-2840

    Keywords

    • Risø-R-1390
    • Risø-R-1390(EN)

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