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Optical Engineering

Displacement measurements over a square meter area using digital holographic interferometry
Author(s): Manuel H. De la Torre Ibarra; J. Mauricio Flores Moreno; Daniel D. Aguayo; María del Socorro Hernández-Montes; Carlos Pérez-López; Fernando Mendoza-Santoyo
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Paper Abstract

Current industrial demand for optical nondestructive testing includes the displacement analysis of large object areas. This paper reports on the use of a digital holographic interferometer to measure displacements over an area of 1.14  m2 . The object under study is a framed working table covered with a Formica layer fixed to a granite bench, and it is observed and illuminated employing a high speed and high resolution camera and a continuous wave high output power laser, respectively. A stabilization procedure needs to be established as long illumination distances are required in order to retrieve the entire surface optical phase during a series of continuous deformations. As a proof of principle, two different tests are presented: the first involves a slow continuous loading process and the second a vibration condition. The wrapped phase and displacement maps are both displayed.

Paper Details

Date Published: 13 May 2014
PDF: 9 pages
Opt. Eng. 53(9) 092009 doi: 10.1117/1.OE.53.9.092009
Published in: Optical Engineering Volume 53, Issue 9
Show Author Affiliations
Manuel H. De la Torre Ibarra, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
J. Mauricio Flores Moreno, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Daniel D. Aguayo, Antwerpen Univ. (Belgium)
María del Socorro Hernández-Montes, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Carlos Pérez-López, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Fernando Mendoza-Santoyo, Ctr. de Investigaciones en Óptica, A.C. (Mexico)


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