Universidad Complutense de Madrid
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Robust isoclinic calculation for automatic analysis of photoelastic fringe patterns

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Quiroga Mellado, Juan Antonio y Pascual Ramírez, Sergio y Villa Hernández, José de Jesús (2008) Robust isoclinic calculation for automatic analysis of photoelastic fringe patterns. In Ninth International Symposium On Laser Metrology, Pts 1 And 2. Proceedings of SPIE, Part 1-2 (7155). SPIE--The International Society for Optical Engineering. ISBN 978-0-8194-7398-1

URL Oficial: http://dx.doi.org/10.1117/12.814610




Resumen

There are two main steps in the analysis of photoelastic fringe patterns: the isoclinics and isochromatics computation. For the isochromatic computation there exist several possibilities but one of the best, from the point of view of reliability and automatization, is the phase shift technique. However all phase shift isochromatic algorithms need a good estimation of the isoclinic direction angle that is a challenging task in presence of low birrefringence, isotropic points and monochromatic illumination. In this work we discuss the application of a novel isoclinic direction calculation method based in a phase shifting technique and a fast direction estimation regularized filter. Experimental results show that the proposed method together with a standard phase shifting isochromatic estimation is a good option for the automatic analysis of photoelastic fringe patterns under different illumination conditions, load levels and sample complexity, making possible further processing steps as full-field stress separation.


Tipo de documento:Sección de libro
Información Adicional:

© (2008) SPIE--The International Society for Optical Engineering.
International Symposium on Laser Metrology (9ª. 2008. Singapur)

Palabras clave:Phase-Tracking Technique, Isochromatics, Separation
Materias:Ciencias > Física > Optica
Código ID:22893
Depositado:24 Sep 2013 16:11
Última Modificación:14 Oct 2013 12:07

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