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Proceedings Paper

Recent developments in double-pulsed video speckle interferometry and its application to the measurement of high-speed transient deformations
Author(s): Guillermo H. Kaufmann; Pablo D. Ruiz; Gustavo E. Galizzi
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Paper Abstract

The inclusion of pulsed lasers in video speckle interferometry has relaxed the limitations of stability and extended the range of engineering problems which can be solved with this technique. If an adequate procedure is used to synchronize the firing of the laser pulses with the state of vibration of the object, out-of-plane and in-plane interferometers can be used to measure fast non-periodic transient displacement fields. As only one phase distribution is available from a transient fringe pattern, its evaluation is usually carried out using the Fourier transform method through the introduction of carrier fringes between both laser pulses. This paper discusses some recent developments that have been implemented in this field and also presents experimental results obtained with different video speckle interferometry systems.

Paper Details

Date Published: 11 September 2001
PDF: 10 pages
Proc. SPIE 4420, Laser Metrology for Precision Measurement and Inspection in Industry, (11 September 2001); doi: 10.1117/12.439204
Show Author Affiliations
Guillermo H. Kaufmann, Univ. Nacional de Rosario (Argentina)
Pablo D. Ruiz, Univ. Nacional de Rosario (Argentina)
Gustavo E. Galizzi, Univ. Nacional de Rosario (Argentina)

Published in SPIE Proceedings Vol. 4420:
Laser Metrology for Precision Measurement and Inspection in Industry
Armando Albertazzi Jr., Editor(s)

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