Modal analysis of wind turbine blades with different test setup configurations

E. Di Lorenzo, S. Manzato, B. Peeters, V. Ruffini, P. Berring, P. U. Haselbach, K. Branner, M. M. Luczak*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)

Abstract

Modal testing of large structures such as wind turbine blades poses several challenges. Applied test setup configuration, test specimen mounting and measurement equipment are known to affect the test results. This paper presents a comparison study of the modal tests of nominally identical 14.3 m long blades. Blade A was supported in free-free boundary conditions and tested with the Experimental Modal Analysis using accelerometers. Blade B was clamped to a concrete block and tested with Operational Modal Analysis and strain gauges. The modes and corresponding natural frequencies obtained from both test cases were compared and correlated with the numerical models of the blades.

Original languageEnglish
Title of host publicationTopics in Modal Analysis and Testing
Subtitle of host publicationProceedings of the 37th IMAC, A Conference and Exposition on Structural Dynamics 2019
EditorsBrandon J. Dilworth, Michael L. Mains
PublisherSpringer New York LLC
Pages143-152
Number of pages10
Volume8
ISBN (Electronic)978-3-030-12684-1
ISBN (Print)9783030126834
DOIs
Publication statusPublished - 15 May 2019
Event37th IMAC, A Conference and Exposition on Structural Dynamics, 2019 - Orlando, United States
Duration: 28 Jan 201931 Jan 2019

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

Conference37th IMAC, A Conference and Exposition on Structural Dynamics, 2019
CountryUnited States
CityOrlando
Period28/01/1931/01/19

Keywords

  • Experimental modal analysis
  • Operational modal analysis
  • Strain modal analysis
  • Structural dynamics identification
  • Wind turbine blade

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