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Proceedings Paper

Whole-field vibration phase measurement with electronic speckle pattern interferometry (ESPI)
Author(s): Jesus D. R. Valera; Julian D. C. Jones; Angel F. Doval
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Paper Abstract

A stroboscopically illuminated ESPI system is described for the simultaneous measurement of vibration amplitude and phase. The technique involves modulating both the illumination pulse phase relative to the vibration, and the optical phase of the interferometer reference beam to generate eight video frames which are processed to yield vibration amplitude and phase.

Paper Details

Date Published: 15 November 1994
PDF: 8 pages
Proc. SPIE 2248, Optical Measurements and Sensors for the Process Industries, (15 November 1994); doi: 10.1117/12.194326
Show Author Affiliations
Jesus D. R. Valera, Heriot-Watt Univ. (United Kingdom)
Julian D. C. Jones, Heriot-Watt Univ. (United Kingdom)
Angel F. Doval, Univ. de Vigo (Spain)

Published in SPIE Proceedings Vol. 2248:
Optical Measurements and Sensors for the Process Industries
Christophe Gorecki; Richard W. T. Preater, Editor(s)

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