Modal Analysis for Crack Detection in Small Wind Turbine Blades

Abstract:

The aim of the present paper is to evaluate structural health monitoring (SHM) techniques based on modal analysis for crack detection in small wind turbine blades. A finite element (FE) model calibrated to measured modal parameters will be introduced to cracks with different sizes along one edge of the blade. Changes in modal parameters from the FE model are compared with data obtained from experimental tests. These comparisons will be used to validate the FE model and subsequently discuss the usability of SHM techniques based on modal parameters for condition monitoring of wind turbine blades.

• Periodical: Key Engineering Materials (Volumes 569-570)
• Pages: 603-610
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.569-570.603
• Online since: July 2013
• Authors: Martin Dalgaard Ulriksen, Jonas Falk Skov, Kristoffer Ahrens Dickow, Poul Henning Kirkegaard, Lars Damkilde
• Keywords: Finite Element Analysis (FEA), Modal Analysis, Structural Health Monitoring (SHM), Wind Turbine Blades

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