Journal ArticleDOI
Towards RGB photoelasticity: Full-field automated photoelasticity in white light
TLDR
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.Abstract:
In this paper a new full-field method for the automatic analysis of isochromatic fringes in white light is presented. The method, named RGB photoelasticity, eliminates the typical drawbacks of the classical approach to photoelasticity in white light which requires a subjective analysis of colors and an experienced analyst to acquire and interpret the results.read more
Citations
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Journal ArticleDOI
Effect of Initial Granular Structure on the Evolution of Contact Force Chains
TL;DR: The effect of initial granular structural conditions on load transmission patterns was experimentally investigated in this article, where two types of granular structures were prepared by laminating cylindrical model particles of different diameters, to which photoelastic sheets were attached.
Proceedings ArticleDOI
Tactile whole-field imaging sensor on photoelasticity
TL;DR: In this paper, a whole-field imaging sensor developed on the principles of photoelasticity produces colored fringe patterns when load is applied on the contacting surface, however, as the loading in the present case is not conventional some new strategies need to be devised to analyze the load imprint.
Book ChapterDOI
On the Use of Different Wavelengths to Digitally Determine the Isochromatic Fringe Order
TL;DR: In this article, four approaches, a novel, two modified and a previous developed approaches, are compared for the determination of the total fringe orders using different wavelengths, and the results show that an error of 0.05 fringes can be achieved by all methods.
Journal ArticleDOI
A Digital Scattered Light Photoelasticity Measurement Technique Using Unpolarized Light
Journal ArticleDOI
Model for quantifying photoelastic fringe degradation by imperfect retroreflective backings
Deonna Woolard,Mark K. Hinders +1 more
TL;DR: A physical model is developed that accounts for how the various components of the coating affect the photoelastic measurement and changes the fringe patterns when backing roughness and oblique incident angles are incorporated into the model.
References
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Book
Handbook on experimental mechanics
TL;DR: The "Handbook on Experimental Mechanics" as mentioned in this paper is a comprehensive reference in the field of experimental mechanics and has been used extensively in the past 50 years for a wide range of applications.
Journal ArticleDOI
Towards full field automated photoelastic analysis of complex components
Eann A. Patterson,Z F Wang +1 more
TL;DR: The design of a automated system for photoelastic analysis of complex components and the potential of the system for providing detailed data over the full field of view is demonstrated by the analysis of a slice from a model of a bolt.
Journal ArticleDOI
Half-fringe photoelasticity: A new approach to whole-field stress analysis
Arkady Voloshin,C. P. Burger +1 more
TL;DR: In this paper, the half-fringe photoelasticity (HFP) method is proposed for whole-field stress analysis based on a symbiosis of two techniques, namely classical photo elasticity and modern digital image analysis.
Book ChapterDOI
Computer-Aided Measurement of Relative Retardations in Plane Photoelasticity
F. W. Hecker,B. Morche +1 more
TL;DR: In the following a method is proposed, which enables the complete extraction of photoelastic information at local picture elements (pixel) from series of related images of the same stress state, and was modified to meet the special requirements ofphotoelastic patterns.
Journal ArticleDOI
Photoelastic measurements by means of computer-assisted spectral-contents analysis
TL;DR: In this paper, a new method of photoelastic measurement has been developed, where the light emerging from a polariscope is spectrally separated and projected on a photodiode array.
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Towards full field automated photoelastic analysis of complex components
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Three fringe photoelasticity ‐ use of colour image processing hardware to automate ordering of isochromatics
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Half-fringe photoelasticity: A new approach to whole-field stress analysis
Arkady Voloshin,C. P. Burger +1 more