Journal ArticleDOI
Noise removal in three-fringe photoelasticity by adaptive colour difference estimation
K. R. Madhu,K. Ramesh +1 more
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TLDR
In this article, a new colour difference formula is proposed with an additional term, which ensures continuity of fringe order data over the domain, and the new method is termed as refined TFP.About:
This article is published in Optics and Lasers in Engineering.The article was published on 2007-01-01. It has received 43 citations till now. The article focuses on the topics: Photoelasticity.read more
Citations
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Journal ArticleDOI
Digital photoelasticity – A comprehensive review
TL;DR: This review thematically classifies all the developments in digital photoelasticity and highlights the relative merits and drawbacks of the various techniques to allow an end-user to make an informed choice on the type of technique to be used in a particular situation.
Journal ArticleDOI
Review of RGB photoelasticity
TL;DR: The article presents an overview of the main characteristics of RGB photoelasticity that is influence of the quarter-wave plate error, number of acquisitions, type of light source, determination of low and high fringe orders, methods for searching the retardation, scanning procedures, calibration on a material different from that under test, combined use of the RGB and phase shifting methods.
Journal ArticleDOI
Digital photoelasticity: Recent developments and diverse applications
K. Ramesh,Sachin Sasikumar +1 more
TL;DR: In the last three decades of developments, the technique of Digital Photoelasticity (DP) has been stabilized and the methodology has successfully applied to a wide range of problems in Engineering and science as discussed by the authors.
Journal ArticleDOI
RGB Photoelasticity: Review and Improvements
TL;DR: In this article, the main developments of RGB photoelasticity with reference to the maximum measurable retardation were considered and a new procedure based on the standard error function evaluated on a subset of the calibration array is also proposed and experimentally tested.
Journal ArticleDOI
RGB photoelasticity applied to the analysis of membrane residual stress in glass
TL;DR: In this paper, the determination of membrane residual stresses in glass plates by automatic digital photoelasticity in white light (RGB photo elasticity) has been proposed, which can effectively replace manual methods based on white light, which are currently provided by some technical standards.
References
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Book
Digital Photoelasticity: Advanced Techniques and Applications
K. Ramesh,G Lewis +1 more
TL;DR: In this article, phase shifting, Polarization Stepping and Fourier Transform Methods are used for phase unwrapping and Optically Enhanced Tiling in digital photoelasticity.
Journal ArticleDOI
Towards RGB photoelasticity: Full-field automated photoelasticity in white light
TL;DR: A new full-field method for the automatic analysis of isochromatic fringes in white light, named RGB photoelasticity, which makes it possible to determine retardations uniquely in the range of 0–3 fringe orders.
Journal ArticleDOI
Three fringe photoelasticity ‐ use of colour image processing hardware to automate ordering of isochromatics
K. Ramesh,Sanjeev S. Deshmukh +1 more
TL;DR: A systematic study has been carried out on how to use the red green blue (RGB) value recorded using a colour image processing system for determining fringe orders up to 3 in a fringe field and it is revealed that instead of directly using RGB values corresponding to a dark field image, if the difference of RGB values between bright and darkfield images is used, the number of noise points is less.
Journal ArticleDOI
Improved method for isochromatic demodulation by RGB calibration.
TL;DR: This work has improved the standard demodulation algorithm used in RGB calibration by changing the Euclidean cost function to a regularized one in which the fidelity term corresponds to the Euclidan distance between RGB triplets; the regularizing term forces piecewise continuity for the isochromatic retardation.
Related Papers (5)
Three fringe photoelasticity ‐ use of colour image processing hardware to automate ordering of isochromatics
K. Ramesh,Sanjeev S. Deshmukh +1 more