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Optical Engineering

Mapping correlation algorithm as interface between experimental optical technique and computer modeling for the study of mechanical structures
Author(s): Hugo J. Puga; Ramon Rodriguez-Vera; Salvador Botello
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Paper Abstract

To create a hybrid system applied to mechanical structure analysis link to experimental optical techniques (EOTs) and computer modeling (CM), the correlation problem between Cm and EOT methods must be solved. A mapping correlation algorithm (MCA) is proposed as the interface between both techniques. Out-of-plane electronic speckle pattern interferometry (ESPI) as the experimental optical technique and a commercial finite element method (fEm) package are employed. The MCA proposed is based on a set of mapping functions, which are found by least-squares algorithms and enable the compensation of image distortions produced by the experimental optical setup. The algorithm was tested initially on a simple 2-D structure and two 3-D complex mechanical structures. Results are reported. Further, the MCA algorithm linking ESPI-FEM methods is applied to out-of-plane displacements over a rectangular plate under stress. Numerical and experimental results along with their error analysis are also presented.

Paper Details

Date Published: 1 August 2001
PDF: 10 pages
Opt. Eng. 40(8) doi: 10.1117/1.1387993
Published in: Optical Engineering Volume 40, Issue 8
Show Author Affiliations
Hugo J. Puga, Ctr. de Investigaciones en Optica (Mexico)
Ramon Rodriguez-Vera, Ctr. de Investigaciones en Optica AC (Mexico)
Salvador Botello, Ctr. de Investigaciones en Matematicas, A.C. (Mexico)

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