Identification of fully parameterized modal models using scanning laser Doppler vibrometer measurements

P. Guillaume; J. Vanherzeele; S. Vanlanduit; R. Longo; K. Van Nieuwenhuyse

doi:10.1117/12.803145

17 June 2008 Identification of fully parameterized modal models using scanning laser Doppler vibrometer measurements

P. Guillaume, J. Vanherzeele, S. Vanlanduit, R. Longo, K. Van Nieuwenhuyse

Proceedings Volume 7098, Eighth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; 70980V (2008) https://doi.org/10.1117/12.803145
Event: Eighth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 2008, Ancona, Italy

Abstract

Scanning laser Doppler vibrometer measurements are characterized by a high spatial resolution and the fact that the structure is measured (or scanned) point by point. These measurements can be processed with the exciting generic modal parameter estimators. However, more accurate modal parameter estimates can be obtained by exploiting the spatial "smoothness" of high spatial-resolution measurements. To do so, the mode shape will be represented by a generalized parametric Fourier-based model. In this contribution, this generalized parametric Fourier-based mode-shape smoother will be integrated inside the modal parameter estimation procedure resulting in a fully (spatial as well as temporal) parameterized modal model.

Citation Download Citation

P. Guillaume, J. Vanherzeele, S. Vanlanduit, R. Longo, and K. Van Nieuwenhuyse "Identification of fully parameterized modal models using scanning laser Doppler vibrometer measurements", Proc. SPIE 7098, Eighth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 70980V (17 June 2008); https://doi.org/10.1117/12.803145

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