Applications of Frequency Domain Curve-fitting in the EFDD Technique

Niels-Jørgen Jacobsen, Palle Andersen, Rune Brincker

    Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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    Abstract

    Over the years different methods have been proposed for how to deal with the presence of harmonic components in operational modal analysis. In this paper a method for detection of harmonic components using Fast Kurtosis Checking will be introduced along with a new frequency domain curve-fitting version of the Enhanced Frequency Domain Decomposition (EFDD) technique. This combined approach makes it possible to extract structural modes fast even when several harmonic components are present and even when the harmonic components are located exactly at the natural frequencies of the structural modes. The applicability of the combined approach is assessed for a case within mechanical engineering as well as a case within civil engineering.
    Original languageEnglish
    Title of host publicationConference Proceedings : IMAC-XXVI : A Conference & Exposition on Structural Dynamics
    Number of pages13
    PublisherSociety for Experimental Mechanics
    Publication date2008
    ISBN (Electronic)0912053984
    Publication statusPublished - 2008
    EventThe International Modal Analysis Conference - Orlando, Florida, United States
    Duration: 4 Feb 20087 Feb 2008
    Conference number: 26

    Conference

    ConferenceThe International Modal Analysis Conference
    Number26
    Country/TerritoryUnited States
    CityOrlando, Florida
    Period04/02/200807/02/2008

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