PHOTOELASTICITY STRESS-ANALYSIS USING CARRIER FRINGE AND FFT TECHNIQUES
UNSPECIFIED (1993) PHOTOELASTICITY STRESS-ANALYSIS USING CARRIER FRINGE AND FFT TECHNIQUES. OPTICS AND LASERS IN ENGINEERING, 18 (2). pp. 79-108. ISSN 0143-8166Full text not available from this repository.
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|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||OPTICS AND LASERS IN ENGINEERING|
|Publisher:||ELSEVIER SCI LTD|
|Number of Pages:||30|
|Page Range:||pp. 79-108|
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