Abstract

I report on a new optical technique that uses the principles of speckle photography and wave-front shearing to obtain the measurement of surface strains. The strain information stored at each point on the object surface is read out on a point-wise basis. The method is developed from a theoretical point of view, and experimental results are presented.

© 1998 Optical Society of America

Hybrid optical and electronic image processing for strain measurements by speckle photography

B. Ineichen, P. Eglin, and R. Dändliker
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Range and accuracy of speckle displacement measurement in double-exposure speckle photography

Jin Seung Kim
J. Opt. Soc. Am. A 6(5) 675-681 (1989)

Image-shearing camera for direct measurement of surface strains

Y. Y. Hung and C. Y. Liang
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High Resolution Moiré Photography: Extension to Variable Sensitivity Displacement Measurement and to the Determination of Direct Strains

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TV shearography: quantitative measurement of shear-magnitude fields by use of digital speckle photography

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