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Applied Optics

Applied Optics


  • Vol. 20, Iss. 19 — Oct. 1, 1981
  • pp: 3392–3402

In-plane displacement and strain measurement by speckle interferometry and moire derivation

Michael Spajer, Pramod K. Rastogi, and Jacques Monneret  »View Author Affiliations

Applied Optics, Vol. 20, Issue 19, pp. 3392-3402 (1981)

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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

Original Manuscript: April 3, 1981
Published: October 1, 1981

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)

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