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Proceedings Paper

Accumulating displacement fields from different steps in laser or white-light speckle methods
Author(s): C. A. Shao; H. J. King; Yeon-Kang Wang; Fu-Pen Chiang
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Paper Abstract

Due to the restriction of the upper bound for fringe visibility, the large deformation and nonlinear problem can not be solved by the experimental method of laser or white light speckle photography directly. The applied load may have to be divided into several intervals. Recording the double-exposure specklegram for each loading inerval, the displacement field can be constructed by point-wise or whole field method. A multiquadric surface function is employed to accumulate the displacement components. A new approach to treat the nonlinear experimental problems is proposed.

Paper Details

Date Published: 1 December 1991
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Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); doi: 10.1117/12.49503
Show Author Affiliations
C. A. Shao, Chung Cheng Institute of Technology (Taiwan)
H. J. King, Chung Cheng Institute of Technology (Taiwan)
Yeon-Kang Wang, Chung Cheng Institute of Technology (Taiwan)
Fu-Pen Chiang, SUNY/Stony Brook (United States)


Published in SPIE Proceedings Vol. 1554:
Second International Conference on Photomechanics and Speckle Metrology
Fu-Pen Chiang; Fu-Pen Chiang, Editor(s)

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