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Proceedings Paper

Phase stepping: application to the automated determination of isostatics in photoelasticimetry
Author(s): Yves Surrel
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Paper Abstract

The application of phase-stepping to photoelasticimetry is presented. Photoelasticimetry is a widespread method for strain analysis. It provides information about the tensorial strain field of the structure or sample under test. An actual challenge is to complete the automation of photoelastic data processing. The phase-stepping method is easily adaptable to the isoclinic fringe pattern, as a simple rotation of the analyzer makes the isoclinic fringes move across the field of examination. The processing of phase-stepped isoclinic fringe patterns provides a whole-field map of the principal directions of the strain tensor. From this map, a very simple algorithm allows us to draw the isostatic lines. Different results concerning classical mechanical configurations are presented: tensile test of a specimen with a hole and diametrical compression of a ring. For the last example, a comparison is made with the analytical results.

Paper Details

Date Published: 10 December 1993
PDF: 11 pages
Proc. SPIE 2003, Interferometry VI: Techniques and Analysis, (10 December 1993); doi: 10.1117/12.165441
Show Author Affiliations
Yves Surrel, Ecole des Mines de Saint-Etienne (France)

Published in SPIE Proceedings Vol. 2003:
Interferometry VI: Techniques and Analysis
Osuk Y. Kwon; Gordon M. Brown; Malgorzata Kujawinska, Editor(s)

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