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Optical Engineering

Measurement of transient out-of-plane displacement gradients in plates using double-pulsed subtraction TV shearography
Author(s): Antonio Fernandez; Angel F. Doval; Guillermo H. Kaufmann; Abundio Davila; Jesus Blanco-Garcia; Carlos Perez-Lopez; J. L. Fernandez
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Paper Abstract

We report a technique for the measurement of transient outof- plane displacement gradients in plane objects by double-pulsed subtraction TV shearography. The fringe patterns are automatically and quantitatively analyzed by the Fourier transform method. A novel optical setup based on the separation and further recombination of illumination beams is demonstrated for the generation of carrier fringes. The principle of the proposed technique is theoretically described, and its immunity to environmental disturbances is discussed. Experimental results obtained with a metallic plate excited by the impact of a piezoelectric transducer are presented.

Paper Details

Date Published: 1 August 2000
PDF: 8 pages
Opt. Eng. 39(8) doi: 10.1117/1.1305260
Published in: Optical Engineering Volume 39, Issue 8
Show Author Affiliations
Antonio Fernandez, Univ. de Vigo (Spain)
Angel F. Doval, Univ. de Vigo (Spain)
Guillermo H. Kaufmann, Univ. Nacional de Rosario (Argentina)
Abundio Davila, Ctr. de Investigaciones en Optica, AC (Mexico)
Jesus Blanco-Garcia, Univ. de Vigo (Spain)
Carlos Perez-Lopez, Centro de Investigaciones en Optica (Mexico)
J. L. Fernandez, Univ. de Vigo (Spain)

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