Development and application of holographic modal decomposition techniques to acoustic analysis of vehicle structures

Xavier Bohineust; Virginie Linet; Frederic Dupuy

doi:10.1117/12.172585

1 March 1994 Development and application of holographic modal decomposition techniques to acoustic analysis of vehicle structures

Xavier Bohineust, Virginie Linet, Frederic Dupuy

Author Affiliations +

Proceedings Volume 2004, Interferometry VI: Applications; (1994) https://doi.org/10.1117/12.172585
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

The solution of structural-acoustic problems in vehicle development needs improvement of calculation and experimental dynamic analysis methods. In this aim, new analysis methods based on 1-D and 3-D displacement measurements recorded by pulsed holographic interferometry have been developed. These essentially allow to perform 3-D finite-element model updating, improvement of physical understanding for particular vibration phenomena and analysis of dynamic responses in running conditions. We discuss, in particular, two different original methods which make possible to determine the modal participations in a dynamic response measured in non-steady state conditions. Several research and industrial measurement applications are presented.

Citation Download Citation

Xavier Bohineust, Virginie Linet, and Frederic Dupuy "Development and application of holographic modal decomposition techniques to acoustic analysis of vehicle structures", Proc. SPIE 2004, Interferometry VI: Applications, (1 March 1994); https://doi.org/10.1117/12.172585

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