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Title: Digital phase-shifting shearography for slope measurement
Authors: He, Y.M.
Tay, C.J. 
Shang, H.M. 
Issue Date: 1999
Citation: He, Y.M., Tay, C.J., Shang, H.M. (1999). Digital phase-shifting shearography for slope measurement. Optical Engineering 38 (9) : 1586-1590. ScholarBank@NUS Repository.
Abstract: An electronic speckle shearing interferometry method for the full field measurement of the slope of an object is presented. The object under study is placed on a rotating platform and illuminated by an expanded laser beam. Its image is recorded by a shearing CCD camera and stored directly into a computer. By recording two images before and after giving the object a small angle of rotation, the resulting correlation fringe pattern that represents the object surface slope can be obtained. The theory of the new method and some experimental results are presented.
Source Title: Optical Engineering
ISSN: 00913286
DOI: 10.1117/1.602211
Appears in Collections:Staff Publications

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