Journal ArticleDOI
Use of multiple loads to extract continuous isoclinic fringes by phase shifting technique
S. K. Mangal,K. Ramesh +1 more
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Using a monochromatic light source for illumination, a new approach which uses two different loads to get continuous isoclinic fringes is proposed in this article, and a new set of optical arrangements in a plane polariscope setup is proposed for this purpose.Abstract:
Using a monochromatic light source for illumination, a new approach is proposed which uses two different loads to get continuous isoclinic fringes A new set of optical arrangements in a plane polariscope setup is proposed for this purpose The intensity equations are obtained by Jones calculus The methodology is verified for the problem of a disc under diametral compressionread more
Citations
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Journal ArticleDOI
Whole field evaluation of stress components in digital photoelasticity—Issues, implementation and application
TL;DR: In this paper, a quality guided approach for isoclinic unwrapping is developed, which uses a ten-step phase shifting approach to obtain a smooth variation of the digital photoelastic parameters over the domain.
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
Computer aided photoelasticity by an optimum phase stepping method
TL;DR: In this article, an automated photoelastic method based on the phase stepping technique is described, which provides full-field maps of the isoclinic parameter and the relative retardation.
Journal ArticleDOI
Comparative Study of Evaluation of Primary Isoclinic Data by Various Spatial Domain Methods in Digital Photoelasticity
M. Ramji,V Y Gadre,K. Ramesh +2 more
TL;DR: In this paper, a comparative study has been conducted on the performance of these methods both qualitatively and quantitatively, and theoretically simulated and experimentally recorded images for a ring under diametral compression is used.
Journal ArticleDOI
Sensitivity of isoclinic data using various phase shifting techniques in digital photoelasticity towards generalized error sources
M. Ramji,R.G.R. Prasath +1 more
TL;DR: A generic approach to simulation of error in digital photoelasticity by Jones calculus is presented and it is found that the ten-step method is the least sensitive among them all.
References
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Journal ArticleDOI
Full-field automatic evaluation of an isoclinic parameter in white light
TL;DR: A technique for full-field evaluation of the isoclinic parameter is presented that combines the phase-shifting method with true color imaging technology and can be suitably integrated with known methods for evaluating the retardations.
Journal ArticleDOI
Data acquisition techniques in digital photoelasticity: a review
K. Ramesh,S. K. Mangal +1 more
TL;DR: Advancements in the last two decades for data acquisition in digital photoelasticity have been brought out in this paper and a need to capture the images in colour is indicated for full automation of data acquisition.
Journal ArticleDOI
Phase-shifting methodologies in photoelastic analysis—the application of Jones calculus
K. Ramesh,V Ganapathy +1 more
TL;DR: An attempt has been made to identify the reason for loss of accuracy in evaluating the field parameters in stress concentration zones and the use of Jones calculus to understand these methodologies are brought out.
Journal ArticleDOI
On image analysis for Birefringence measurements in photoelasticity
TL;DR: A number of techniques have been proposed during the past twenty years that have the common purpose of automating photoelastic fringe analysis, including spectral contents analysis, phase-shifting or stepping and Fourier transform procedures, and all of the analytical methods suffer similar disadvantages.
Journal ArticleDOI
Three-dimensional measurement of macro- and microdomains using optical methods
TL;DR: In this paper, the authors demonstrate how the measurement range of an angular speckle contouring technique is increased by the addition of incremental phase images from the centimeter range down to the micrometer range.