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Proceedings Paper

Characterization of a dissipative assembly by structural intensity using optical measurements
Author(s): Jean-Claude Pascal; Xavier Carniel; Jing-Fang Li
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Paper Abstract

It has been shown in previous publications that it was possible to obtain from complex velocity maps obtained by optical measurements (Holography, LDV, etc. .) and wave number processing, useful quantities to study energy flows in structures: intensity, power flow, forces, localisation of sources and sinks of energy. In this paper, scanning laser vibrometer measurements on two-plate assembly are used to determine the dissipating power by the joints from these energetic quantities. The proposed method compute the average power flow over lines parallel to the junction to check a one dimensional model of power flow distribution along the other dimension. An approximate energy conservation law of flexural vibration which gives good results on beam structures is used to determine the dissipation characteristics of joints.

Paper Details

Date Published: 22 May 2002
PDF: 12 pages
Proc. SPIE 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2002); doi: 10.1117/12.468182
Show Author Affiliations
Jean-Claude Pascal, Univ. du Maine and ENSIM (France)
Xavier Carniel, Ctr. Technique des Industries Mecaniques (France)
Jing-Fang Li, Visual VibroAcoustics (France)


Published in SPIE Proceedings Vol. 4827:
Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications

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