Experimental modal analysis using blind source separation techniques

Poncelet, Fabien; Kerschen, Gaëtan; Golinval, Jean-Claude

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Experimental modal analysis using blind source separation techniques

Poncelet, Fabien; Kerschen, Gaëtan; Golinval, Jean-Claude

2006 • In International Conference on Noise and Vibration Engineering, Leuven, 2006

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Keywords :

proper orthogonal decomposition; Hilbert-Huang transform; Structural system identification; modal analysis

Abstract :

[en] Recently, statistical and empirical signal processing techniques such as the proper orthogonal decomposition and the Hilbert-Huang transform have shown promise for structural system identification. In the present study, experimental modal analysis is carried out by employing blind source separation techniques and by interpreting the response of a mechanical system as a static mixture of sources. Specifically, it is shown under which circumstances the normal coordinates of the vibration modes may be interpreted as virtual sources. The advantages and limitations of the proposed method will be discussed, and the procedure will be demonstrated using numerical applications.

Disciplines :

Physics
Aerospace & aeronautics engineering
Mechanical engineering
Mathematics

Author, co-author :

Poncelet, Fabien ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures

Kerschen, Gaëtan ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux

Golinval, Jean-Claude ; Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS - Vibrations et identification des structures

Language :

English

Title :

Experimental modal analysis using blind source separation techniques

Publication date :

2006

Event name :

International Conference on Noise and Vibration Engineering

Event place :

Leuven, Belgium

Audience :

International

Main work title :

International Conference on Noise and Vibration Engineering, Leuven, 2006

Available on ORBi :

since 14 August 2009

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