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PHOTOELASTICITY STRESS-ANALYSIS USING CARRIER FRINGE AND FFT TECHNIQUES
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UNSPECIFIED (1993) PHOTOELASTICITY STRESS-ANALYSIS USING CARRIER FRINGE AND FFT TECHNIQUES. OPTICS AND LASERS IN ENGINEERING, 18 (2). pp. 79-108. ISSN 0143-8166.
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Abstract
A novel carrier fringe technique for photoelasticity stress analysis is described and verified experimentally. Linear carrier fringes generated by using a quartz wedge are superimposed on fringes formed by the stressed model. The resultant fringe pattern is then captured using a charge coupled device camera and stored in a digital frame buffer. A fast Fourier transform method is then used to process the complete photoelastic fringe image over the whole surface of the model. The experiment also uses a minimum spanning tree phase unwrapping strategy to create a continuous map of the whole stress field. Finally, the whole principal stress difference field has been calculated and plotted from one single exposure showing the methods' potential for use as a reflection analysis system suitable for application to nonstationary objects and complicated stress patterns.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Journal or Publication Title: | OPTICS AND LASERS IN ENGINEERING | ||||
Publisher: | ELSEVIER SCI LTD | ||||
ISSN: | 0143-8166 | ||||
Official Date: | 1993 | ||||
Dates: |
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Volume: | 18 | ||||
Number: | 2 | ||||
Number of Pages: | 30 | ||||
Page Range: | pp. 79-108 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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