In-plane displacement and strain measurement by speckle interferometry and moire derivation
Applied Optics, Vol. 20, Issue 19, pp. 3392-3402 (1981)
http://dx.doi.org/10.1364/AO.20.003392
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Abstract
The notion of the coefficient of correlation between two interfering wave fronts is applied to the study of fringe formation and visibility in speckle interferometry. The parameters affecting the visibility of the in-plane displacement fringes are analyzed in the case of an arbitrary displacement and deformation of the object surface. The influence of strain as well as defocusing on the visibility is explicated. Physical significance of the results is discussed. The work is partly backed by experimental investigation.
© 1981 Optical Society of America
Citation
Michael Spajer, Pramod K. Rastogi, and Jacques Monneret, "In-plane displacement and strain measurement by speckle interferometry and moire derivation," Appl. Opt. 20, 3392-3402 (1981)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-20-19-3392
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