Stroboscopic Laser Speckle Interferometry Used for Measuring Dynamic Behaviour of Structures

Y. M. He; Y. S. Tan; C. H. Ku

doi:10.1117/12.952370

16 July 1986 Stroboscopic Laser Speckle Interferometry Used for Measuring Dynamic Behaviour of Structures

Y. M. He, Y. S. Tan, C. H. Ku

Proceedings Volume 0599, Optics in Engineering Measurement; (1986) https://doi.org/10.1117/12.952370
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France

Abstract

In this paper a new technology for measuring the dynamic behaviour of structures using the stroboscopic laser speckle interferometry is introduced. A good quality of whole-field speckle fringe patterns and Young's fringe patterns can be obtained when this method is used. Moreover, the methods of identifying the phase information of the vibratory structure and choosing the width of He-Ne laser pulses are discussed. Lastly, it presents the experimental results of comparing the stroboscopic laser speckle interferometry with the time-average speckle interferometry.

Citation Download Citation

Y. M. He, Y. S. Tan, and C. H. Ku "Stroboscopic Laser Speckle Interferometry Used for Measuring Dynamic Behaviour of Structures", Proc. SPIE 0599, Optics in Engineering Measurement, (16 July 1986); https://doi.org/10.1117/12.952370

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