Statistical approach for uncertainty quantification of experimental modal model parameters

M. Luczak, B. Peeters, M. Kahsin, Kim Branner

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

Abstract

Composite materials are widely used in manufacture of aerospace and wind energy structural components. These load carrying structures are subjected to dynamic time-varying loading conditions. Robust structural dynamics identification procedure impose tight constraints on the quality of modal models estimates obtained from vibration experiments. Modal testing results are influenced by numerous factors introducing uncertainty to the measurement results. Different experimental techniques applied to the same test item or testing numerous nominally identical specimens yields different test results. This paper aims at a systematic approach for uncertainty quantification of the parameters of the modal models estimated from experimentally obtained data. Statistical analysis of modal parameters is implemented to derive an assessment of the entire modal model uncertainty measure. Investigated structures represent different complexity levels ranging from coupon, through sub-component up to fully assembled aerospace and wind energy structural components made of composite materials. The proposed method is demonstrated on two application cases of a small and large wind turbine blade.
Original languageEnglish
Title of host publicationProceedings of International Conference on Noise and Vibration Engineering (isma2014) and International Conference on Uncertainty in Structural Dynamics (usd2014)
Number of pages11
PublisherKatholieke Universiteit Leuven
Publication date2014
Pages4851-4861
Publication statusPublished - 2014
EventInternational Conference on Noise and Vibration Engineering (ISMA 2014) and International Conference on Uncertainty in Structural Dynamics (USD 2014) - Leuven, Belgium
Duration: 15 Sep 201419 Sep 2014

Conference

ConferenceInternational Conference on Noise and Vibration Engineering (ISMA 2014) and International Conference on Uncertainty in Structural Dynamics (USD 2014)
CountryBelgium
CityLeuven
Period15/09/201419/09/2014

Keywords

  • Mechanical Engineering
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Composite materials
  • Modal analysis
  • Structural dynamics
  • Turbomachine blades
  • Wind power
  • Wind turbines
  • Dynamics identifications
  • Experimental techniques
  • Large wind turbines
  • Load-carrying structure
  • Statistical approach
  • Structural component
  • Uncertainty quantifications
  • Vibration experiment
  • Uncertainty analysis
  • ENGINEERING,

Cite this

Luczak, M., Peeters, B., Kahsin, M., & Branner, K. (2014). Statistical approach for uncertainty quantification of experimental modal model parameters. In Proceedings of International Conference on Noise and Vibration Engineering (isma2014) and International Conference on Uncertainty in Structural Dynamics (usd2014) (pp. 4851-4861). Katholieke Universiteit Leuven.