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Optical Engineering

Surface strain distribution on thin metallic plates using 3-D digital holographic interferometry
Author(s): Manuel de la Torre Ibarra; Fernando Mendoza Santoyo; Carlos Pérez-López; Tonatiuh Saucedo-Anaya; Daniel D. Aguayo
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Paper Abstract

Separation of the surface strain gradient as a function of x and y was achieved using three-dimensional (3-D) digital holographic interferometry. The optical setup is capable of independently determining the x, y, and z displacements of the object surface. The magnitude contributions of the dependent, or interconnected, strain gradients are calculated from the normal strain gradients. In order to simplify the mathematical model, objects with smooth surfaces were considered and also only small static loads were applied to deform them. The 3-D information thus gathered is analyzed in order to obtain the x and y strain gradients. Each gradient is then processed to obtain a pair of mutually dependent gradient maps. These maps are shown for the x and y axes in a 3-D sparse vector map that changes according to the strain present on the object.

Paper Details

Date Published: 1 October 2006
PDF: 11 pages
Opt. Eng. 45(10) 105603 doi: 10.1117/1.2360157
Published in: Optical Engineering Volume 45, Issue 10
Show Author Affiliations
Manuel de la Torre Ibarra, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Fernando Mendoza Santoyo, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Carlos Pérez-López, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Tonatiuh Saucedo-Anaya, Ctr. de Investigaciones en Óptica, A.C. (Mexico)
Daniel D. Aguayo, Ctr. de Investigaciones en Óptica, A.C. (Mexico)

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