A robust approach to demodulating and unwrapping phase-stepped photoelastic data

Autor:	Eann A. Patterson, David Backman, Philip Siegmann
Rok vydání:	2005
Předmět:	Photoelasticity Engineering drawing Engineering Pixel business.industry Mechanical Engineering Phase (waves) Aerospace Engineering Finite element method Reduction (complexity) Interferometry Mechanics of Materials Demodulation business Aerospace Algorithm
Zdroj:	Experimental Mechanics. 45:278-289
ISSN:	1741-2765 0014-4851
DOI:	10.1007/bf02427952
Popis:	New algorithms are proposed for processing wrapped isochromatic and isoclinic fringe data generated by the digital photoelastic technique of phase-stepping. The new algorithms are based on processing areas rather than individual pixels to demodulate the data and employing quality assessments of the data to guide the unwrapping procedure. Comparisons with an existing algorithm, manual analysis, and finite element modeling have been used to demonstrate that the new approach is more robust without any reduction in speed or accuracy. This represents a significant advance for processing complex fringe patterns, which are often encountered in the aerospace industry from which the exemplars are drawn.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::10118b19dac83c52a5ad0aaf2c079423 https://doi.org/10.1007/bf02427952 Zobrazit plný text záznamu Full text from SpringerLink