RT Book, Section
T1 Robust isoclinic calculation for automatic analysis of photoelastic fringe patterns
A1 Quiroga Mellado, Juan Antonio
A1 Pascual, E.
A1 Villa Hernández, José de Jesús
AB 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.
PB SPIE--The International Society for Optical Engineering
SN 978-0-8194-7398-1
YR 2008
FD 2008
LK https://hdl.handle.net/20.500.14352/53280
UL https://hdl.handle.net/20.500.14352/53280
NO J. A. Quiroga, E. Pascual, and J. Villa-Hernandez "Robust isoclinic calculation for automatic analysis of photoelastic fringe patterns", Proc. SPIE 7155, Ninth International Symposium on Laser Metrology, 715530 (3 October 2008); https://doi.org/10.1117/12.814610
NO © (2008) SPIE--The International Society for Optical Engineering. International Symposium on Laser Metrology (9ª. 2008. Singapur)
DS Docta Complutense
RD 21 abr 2025