Damping identification through use of noncontact sensors

Paulo Rogerio Novak; Nilson Barbieri; Renato Barbieri

doi:10.1117/12.579556

22 June 2004 Damping identification through use of noncontact sensors

Paulo Rogerio Novak, Nilson Barbieri, Renato Barbieri

Proceedings Volume 5503, Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (2004) https://doi.org/10.1117/12.579556
Event: Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, 2004, Ancona, Italy

Abstract

In this paper, the authors present a procedure to damping identification of the plate clamped in an extremity and free in the other using measurements of non contact sensors. The procedure is based on computational simulations results of mathematical models obtained through the Finite Element Method (FEM) and experimental procedures based on modal analysis. The experimental data are obtained of two ways: the first using a measurement laser system (Laser Velocity-Transducer Set) and a hammer of impact for excitement of the system of which is obtained frequency response function of the system, while the second using proximity sensors instead of laser, the validation of the numeric models is done through confrontations of computational results and measurements experimental data. The estimation of the system damping matrix is calculated through of the modal matrix of the system. Comparative results of the efficiency of the way of measurement in the estimated of the system damping matrix are presented.

Citation Download Citation

Paulo Rogerio Novak, Nilson Barbieri, and Renato Barbieri "Damping identification through use of noncontact sensors", Proc. SPIE 5503, Sixth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 June 2004); https://doi.org/10.1117/12.579556

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