The paper will introduce some recent advances in vibration testing and modal analysis of airplanes. Recently, a very promising parameter estimation method became available, that has the potential to become the new standard. The main advantage of this so-called PolyMAX method is that it yields extremely clear stabilization diagrams even for broadband and high-order analyses. The method will be applied to two aircraft cases: a Ground Vibration Test using broadband shaker excitation on a small composite aircraft and in-flight data using natural turbulences as excitation. These two data sets allow illustrating both the classical Frequency Response Function based as well as the operational output-only modal analysis process.


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    Title :

    Vibration Testing and Modal Analysis of Airplanes – Recent Advances


    Additional title:

    Sae Technical Papers



    Conference:

    World Aviation Congress & Exposition ; 2004



    Publication date :

    2004-11-02




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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