Measurement of pure curvature fringe distribution by using a double whole-field filtering technique |
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| Authors: | K F Wang A K Tieu E B Li |
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| Institution: | a Department of Mechanical Engineering, Engineering College, Yangzhou University, Jiangsu 225000, People's Republic of China;b Department of Mechanical Engineering, Faculty of Engineering, University of Wollongong, Wollongong, NSW 2522, Australia |
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| Abstract: | A double whole-field filtering technique to measure pure curvature fringe distribution of a deformed object is proposed. In this method, the slope fringes which are contained in the pattern of curvature fringes can be completely eliminated from the curvature fringes. Thus the pattern of pure curvature fringes with a good contrast can be obtained. Theoretical analysis and experimental results are given in this paper. |
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| Keywords: | Speckle Shearography Curvature Whole-field filtering |
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