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Proceedings Paper

Temporal speckle pattern interferometry for vibration measurement
Author(s): J. Kauffmann; Hans J. Tiziani
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Paper 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.

Paper Details

Date Published: 22 May 2002
PDF: 4 pages
Proc. SPIE 4827, Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (22 May 2002); doi: 10.1117/12.468146
Show Author Affiliations
J. Kauffmann, Univ. Stuttgart (Germany)
Hans J. Tiziani, Univ. Stuttgart (Germany)


Published in SPIE Proceedings Vol. 4827:
Fifth International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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