Structural intensity measurements using 25-Hz TV-holography recording

Jean Pierre Chambard; Vincent Chalvidan; Xavier Carniel; Jean-Claude Pascal

doi:10.1117/12.386735

22 May 2000 Structural intensity measurements using 25-Hz TV-holography recording

Jean Pierre Chambard, Vincent Chalvidan, Xavier Carniel, Jean-Claude Pascal

Proceedings Volume 4072, Fourth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (2000) https://doi.org/10.1117/12.386735
Event: 4th International Conference on Vibration Measurement by Laser Techniques, 2000, Ancona, Italy

Abstract

Structural intensity is a powerful tool which give transfer path of the vibration energy within a structure. Additional data processing allows then to localize sources and sinks of that energy. The measurement of these quantities is possible using classical means (accelerometers, stress gauges, ...) but the data processing is complex and require a lot of accurate sensors because it is based on spatial derivatives of high order. The optical techniques (laser vibrometry, holography, ...) are more suited for that purpose because of the high density of measuring points and because of the well-known advantages of these methods: reduced measurement time and no modification of the mass parameters of the structure as it is the case when using contact sensors.

Citation Download Citation

Jean Pierre Chambard, Vincent Chalvidan, Xavier Carniel, and Jean-Claude Pascal "Structural intensity measurements using 25-Hz TV-holography recording", Proc. SPIE 4072, Fourth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2000); https://doi.org/10.1117/12.386735

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