Journal ArticleDOI
Scanning schemes in white light Photoelasticity – Part I: Critical assessment of existing schemes
Vivek Ramakrishnan,K. Ramesh +1 more
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TLDR
The existing scanning schemes are critically evaluated for their ability to scan the entire model domain, influence of seed point selection and noise propagate, which makes them suitable especially for problems where recording multiple images is difficult.About:
This article is published in Optics and Lasers in Engineering.The article was published on 2017-05-01. It has received 17 citations till now. The article focuses on the topics: Photoelasticity.read more
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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
Scanning schemes in white light photoelasticity - Part II: Novel fringe resolution guided scanning scheme
Vivek Ramakrishnan,K. Ramesh +1 more
TL;DR: In this paper, a method is proposed for creating a whole field map which represents the spatial resolution of the isochromatic fringe pattern, which can be used to extract fringe data from thin slices cut from a stereo-lithographic model that has characteristic random noise due to layered manufacturing.
Journal ArticleDOI
An improved normalization technique for white light photoelasticity
K. Ramesh,Ashutosh Pandey +1 more
TL;DR: A novel normalization methodology is developed to improve the dynamic range in both low and high fringe density areas and it is demonstrated that while applying normalization for stretching the dynamicrange, one has to use only an experimentally recorded calibration table that is normalized.
Journal ArticleDOI
Photoelastic method to quantitatively visualise the evolution of whole-field stress in 3D printed models subject to continuous loading processes
TL;DR: In this paper, the authors use a series of continuous frames extracted from a video recording of the fringe changes over the entire loading process to quantify the continuous evolution of the whole-field stress in photosensitive material that is applicable to fabrication of complex structures using 3D printing technology.
Journal ArticleDOI
Quantification of photoelastic fringe orders using polarized light camera and continuous loading
TL;DR: In this article, a polarized light camera was employed to simultaneously capture the photoelastic patterns of the dark and bright fields under circular polariscope, and based on the light intensity difference of these patterns in the entire loading process, a method of quantifying fringe orders was proposed.
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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
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
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
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
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.
Related Papers (5)
Scanning schemes in white light photoelasticity - Part II: Novel fringe resolution guided scanning scheme
Vivek Ramakrishnan,K. Ramesh +1 more
Advancing front scanning approach for three-fringe photoelasticity
Sohan Kale,Sohan Kale,K. Ramesh +2 more