G
Gert De Sitter
Researcher at Vrije Universiteit Brussel
Publications - 42
Citations - 932
Gert De Sitter is an academic researcher from Vrije Universiteit Brussel. The author has contributed to research in topics: Operational Modal Analysis & Modal analysis. The author has an hindex of 15, co-authored 42 publications receiving 782 citations.
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Operational modal analysis in the presence of harmonic excitations by the use of transmissibility measurements
TL;DR: In this article, a transmissibility-based operational modal analysis (OMA) technique was proposed to identify the modal parameters due to the presence of harmonics in the frequency band of interest.
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Structural health monitoring of offshore wind turbines using automated operational modal analysis
Christof Devriendt,Filipe Magalhães,Wout Weijtjens,Gert De Sitter,Álvaro Cunha,Patrick Guillaume +5 more
TL;DR: In this article, the authors present and discuss the approach and the first results of a long-term dynamic monitoring campaign on an offshore wind turbine in the Belgian North Sea, focusing on the vibration levels and modal parameters of the fundamental modes of the support structure.
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Damping estimation of an offshore wind turbine on a monopile foundation
TL;DR: In this article, a comparative study between different techniques aimed at identifying the damping values of an offshore wind turbine on a monopile foundation is presented, where it is shown that damping ratios can directly be obtained from vibrations of the tower under ambient excitation from wave and wind loading.
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An operational modal analysis approach based on parametrically identified multivariable transmissibilities
TL;DR: In this article, the approach to identify modal parameters from output-only (scalar) transmissibility measurements is generalized to multivariable transmissibilities, where the poles that are identified from both single and multi-modal transmissible measurements do not correspond with the system's poles.
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Operational modal parameter estimation of MIMO systems using transmissibility functions
TL;DR: In this paper, a poly-reference Transmissibility based Operational Modal Analysis (pTOMA) is proposed to identify the system parameters while the excitation may contain (varying) harmonics or strong coloration.