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Noise‐free Determination of Isochromatic Fringe Order by Load Stepping
Author(s) -
Tamrakar D. K.,
Ramesh K.
Publication year - 2002
Publication title -
strain
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.477
H-Index - 47
eISSN - 1475-1305
pISSN - 0039-2103
DOI - 10.1046/j.0039-2103.2002.00002.x
Subject(s) - photoelasticity , noise (video) , computer science , domain (mathematical analysis) , ambiguity , control theory (sociology) , mathematics , mathematical analysis , computer vision , artificial intelligence , image (mathematics) , control (management) , cauchy stress tensor , programming language
The traditional ambiguity in the sign of fractional retardation in certain zones of the model by phase shifting technique has been overcome with the development of load stepping in digital photoelasticity. However, the existing methodology of load stepping introduces several points in the model domain that are subjected to excessive noise. A new methodology has been proposed that combines the merits of load stepping and phase shifting to obtain fractional retardation free of noise and ambiguity over the model domain.