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Information × Registration Number 0221U104067, 0119U002250 , R & D reports Title Development of methods and means of phase-slip interferometry, electronic speckle-interferometry and digital holography for non-destructive diagnostics of materials and constructions popup.stage_title Head Fityo Volodymyr M., Доктор фізико-математичних наук Registration Date 01-03-2021 Organization Lviv Polytechnic National University popup.description2 An optical scheme of a speckle interferometer for the implementation of the method of three-step electronic speckle interferometry with any phase shift of the reference beam has been developed. A model of a phase-shifting speckle interferometer was created and it was coordinated with the loading device. An algorithm and a program for the operation of a speckle interferometer during the study of the deformation characteristics of samples of structural materials have been developed. An experimental model of a two-wave interferometer for the implementation of the two-wave three-step FZI method with an arbitrary phase shift of the reference beam was created and its approbation was carried out. The optical scheme of the experimental model of the digital holography system was debugged and its experimental approbation was carried out. The method of determining the metrological characteristics of the created interferometric models, in particular the errors of the reproduced surface relief, that is the parameters of 3d roughness and undulation, was developed and experimentally verified. A method for studying the deformation characteristics of dental implants under the influence of external loads by digital holographic interferometry has been developed. A method for improving the quality of digital interferograms, which is based on filtering by orthogonal Chebyshev polynomials has been developed.  Product Description popup.authors Bartkiv Lyubomyr V Bobytskyi Yaroslav V Voronyak Taras I Kotsyuba Yuriy M Muravskyi Leonid I Petrovska Halyna A Stasyshyn Ihor V popup.nrat_date 2021-03-01 Close