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Russian Journal of Nondestructive Testing

, Volume 55, Issue 8, pp 622–629 | Cite as

Using Two-Beam Interferometry in Surface Deformation Monitoring Systems

  • V. E. Makhov
  • A. I. Potapov
  • Ya. G. Smorodinskii
  • E. Ya. ManevichEmail author
OPTICAL METHODS
  • 11 Downloads

Abstract

We consider the issues of expanding the range of measuring the shape and determining the deformation of a surface by wavefront detection methods such as holographic and speckle interferometry and speckle photography, based on a two-beam Jamin interferometer equipped with an image shifting device. A design has been developed for the two-beam interferometer with the device for shifting images in channels based on synchronously tilted plane-parallel plates. A technique for processing shear interferograms is decsribed. The accuracy of measuring the spacing of fringes in the interference pattern by Fourier-transform and wavelet-analysis based algorithms is studied. A block diagram of an automated device for interpreting speckle interferograms by the phase method based on a He–Ne laser in a magnetic field with a Zeeman frequency shift has been developed. It is shown that the accuracy of measuring the spacing of interference fringes can be as high as 0.02 of the interference fringe width.

Keywords:

holographic interferometry speckle interferometry light field Jamin interferometer National Instruments virtual instrument continuous wavelet transform CWT optical frequency shift Doppler effect Zeeman effect 

Notes

FUNDING

This work was carried out within the framework of the state order from the RF Ministry of Education and Science on topic “Diagnostics”, project no. АААА-А18-118020690196-3.

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • V. E. Makhov
    • 1
  • A. I. Potapov
    • 2
  • Ya. G. Smorodinskii
    • 3
    • 4
  • E. Ya. Manevich
    • 5
    Email author
  1. 1.Mozhaysky’s Military-Space AcademySt. PetersburgRussia
  2. 2.St. Petersburg Mining UniversitySt. PetersburgRussia
  3. 3.Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of SciencesYekaterinburgRussia
  4. 4.Ural Federal UniversityYekaterinburgRussia
  5. 5.ZAO Eskomstroimontazh-servisSt. PetersburgRussia

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