Temporal speckle pattern interferometry for vibration measurement

J. Kauffmann; Hans J. Tiziani

doi:10.1117/12.468146

22 May 2002 Temporal speckle pattern interferometry for vibration measurement

J. Kauffmann, Hans J. Tiziani

Proceedings Volume 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications; (2002) https://doi.org/10.1117/12.468146
Event: Fifth International Conference on Vibration Measurements by Laser Techniques, 2002, Ancona, Italy

Abstract

The evaluation of the time dependent speckle modulation [2-3] due to optical path difference changes can be extended to vibration measurement. For a sinusoidal signal evaluation with varying frequency: from zero at its reversal point, to maximum frequency at its medium position with maximum speed. For both cases we assume a harmonic vibration. For evaluation, the distance of two adjacent zero frequency points is determined, giving half the mechanical time base, and the maximum frequency, giving the maximum mechanical speed, or, assuming a harmonic vibration, the mechanical amplitude.

Citation Download Citation

J. Kauffmann and Hans J. Tiziani "Temporal speckle pattern interferometry for vibration measurement", Proc. SPIE 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2002); https://doi.org/10.1117/12.468146

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