Speckle-shear interferometry with increased sensitivity

Ventseslav Christov Sainov; Nikola Mechkarov; Assen Shulev; Wim De Waele; Joris Degrieck; Pierre Michel Boone

doi:10.1117/12.519488

4 November 2003 Speckle-shear interferometry with increased sensitivity

Ventseslav Christov Sainov, Nikola Mechkarov, Assen Shulev, Wim De Waele, Joris Degrieck, Pierre Michel Boone

Proceedings Volume 5226, 12th International School on Quantum Electronics: Laser Physics and Applications; (2003) https://doi.org/10.1117/12.519488
Event: 12th International School on Quantum Electronics Laser Physics and Applications, 2002, Varna, Bulgaria

Abstract

An improved sensitivity in speckle-shear interferometry for out-of-plane displacements measurement using 2D folding shear is obtained. A triple prism as a shearing device is utilized. The sensitivity of measurement is up to two times higher in comparison with the one-dimensional folding shear at the same loading of the object. The same approach was feasible to be applied for deformation investigation of microstructures with magnification. The proposed method is especially suitable for symmetrical field deformation measurement, residual stress detection, continuous monitoring of object subjected to risk and other tasks of non-destructive testing.

Citation Download Citation

Ventseslav Christov Sainov, Nikola Mechkarov, Assen Shulev, Wim De Waele, Joris Degrieck, and Pierre Michel Boone "Speckle-shear interferometry with increased sensitivity", Proc. SPIE 5226, 12th International School on Quantum Electronics: Laser Physics and Applications, (4 November 2003); https://doi.org/10.1117/12.519488

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