Fabrication and Installation of Holographic Set Up for Non-destructive Testing
V. N. Poyarkov
Bolhov Plant of Semiconductor Devices Bolhov, 17, K. Marksa Str., Oryol Region, City of Bolkhov, 303140, Russia.
E. A. Belkin *
Bolhov Plant of Semiconductor Devices Bolhov, 17, K. Marksa Str., Oryol Region, City of Bolkhov, 303140, Russia.
O. I. Markov
Department of Experimental and Theoretical Physics, Faculty of Physics and Mathematics, Oryol State University. I. S. Turgenev, 95, Komsomolskaya Str., Orel 302026, Russia.
*Author to whom correspondence should be addressed.
Abstract
This study presents the fabrication and installation of a holographic system intended for non-destructive assessment of the geometry and surface microrelief of complex-shaped components. The installation records a holographic image of a component surface, extracts profile maps in mutually perpendicular directions, and supports the construction of a three-dimensional geometric model for comparison with a reference surface. The system incorporates a vibration-isolated holographic table that permits flexible positioning of optical elements on magnetic bases, a programmable optical shutter, a scanning electromagnetic-field indicator, and equipment for recording a complete holographic image over an angular range of 0–360°. A holographic plate holder using a neodymium-magnet podium and a ceramic superconductor is also described as a means of reducing holder microvibrations through Meissner-effect levitation. In addition, a second-generation electromagnetic-field indicator is proposed, using a translational electric motor and a CCD sensor to obtain microrelief maps for computer-based reconstruction. The installation is intended for passive, non-destructive inspection of external surface geometry and microrelief; internal defects require a complementary X-ray diffraction scanner. Several subsystems, including the full-image recording device, levitating plate-holder platform, and second-generation indicator, remain at the prototype-development stage. The work consolidates the principal mechanical, optical, electronic, and computational elements of the Sofya Varvarchuk installation for holographic surface measurement and three-dimensional reconstruction.
Keywords: Holographic table, optical shutter, pinhole, electromagnetic-field scanner, surface microrelief, holographic plate holder, full-surface holographic imaging, non-destructive testing, three-dimensional surface reconstruction, Meissner-effect levitation