Dr. Petr M. Pivkin Profile

Dr. Petr M. Pivkin

at Moscow State Univ of Technology "STANKIN"

SPIE Involvement:

Author

Publications (51)

Proceedings Article | 23 November 2024 Poster + Paper

Propagation of electromagnetic waves in planar waveguide with non-linear properties: a repulsive Casimir-Lifshitz force and optical bistability

Catherine Krasikova, Liudmila Uvarova, Maxim Karpov, Nikolay Tcherniega, Anna Kudryavceva, Alexey Nadykto, Petr Pivkin

Proceedings Volume 13246, 132461K (2024) https://doi.org/10.1117/12.3037649

KEYWORDS: Electromagnetic radiation, Optical bistability, Nonlinear optics, Dielectrics, Radio propagation, Wave propagation, Waveguides, Absorption, Refractive index, Planar waveguides

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In this paper, we investigate the propagation of electromagnetic radiation in a model planar three-layer waveguide with a nonlinear dielectric layer (film) with accounting for the absorption of radiation in each layer and the second-order dependence of the dielectric permittivity on the electric field amplitude. In this model, absorption was taken into account as an imaginary component of the dielectric permittivity and electric field strength. In order to compute the electric field strength, Maxwell's equations, the finite-difference method and matrix sweep method with simple iterations were used. The energy flux of guided waveguide modes was determined using the Poynting vector, which depends on the amplitude of the electric field strength. A nonlinear dependence of the electromagnetic radiation flux on the effective refractive index, which characterizes the wave velocity, was pointed out and optical bistability, where the same value of the flux corresponds to two values of the effective refractive index, was revealed. The developed model, which explicitly account for the impact of the absorption coefficient on the transmission of electromagnetic radiation, can be used to design optoelectronics and integrated optics, such as nonlinear waveguides, optical switches, and various optical devices based on the use of optical bistability. It was shown how the regions of optical bistability change depending on the thickness of the nonlinear layer and the dielectric constants of the waveguide components. Since waveguide layers considered here are of micro- and nano-size, the Casimir force can play an important role in the propagation of electromagnetic waves, which, at a certain ratio of the dielectric constants of the waveguide layers, manifests itself as a repulsive force arising between the dielectric layers of the waveguide. The nonlinear nature of the transfer of electromagnetic waves was found to lead to a bistable dependence of the Casimir-Lifshitz repulsive force on the effective refractive index. The change in the film layer thickness due to the Casimir-Lifshitz repulsive force was also investigated. It was found that the presence of multimode waveguide modes for wavelengths of ~ 10 nm can significantly reduce energy losses during the propagation of electromagnetic waves in nanostructures.

Proceedings Article | 23 November 2024 Poster + Paper

Interaction of electromagnetic waves with and thermal processes in the two-layer spherical nanostructures

Liudmila Uvarova, Yana Burenok, Marina Smirnova, Irina Krivenko, Maxim Karpov, Nikolay Tcherniega, Anna Kudryavceva, Alexey Nadykto, Petr Pivkin

Proceedings Volume 13246, 132461I (2024) https://doi.org/10.1117/12.3037639

KEYWORDS: Electromagnetic radiation, Quantum particles, Particles, Electromagnetism, Electrons, Spherical lenses, Algorithm development, Magnetism, Ions, Optical spheres

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Although the interaction of electromagnetic waves with dispersed systems has been studied for many decades, a number of important problems still remain unresolved. This primarily applies to systems with nonlinear properties composed of smaller particles, such as nano- and meso-particles. Also, since the interaction of electromagnetic waves with dispersed media leads to various induced effects, modeling the disperse media properties requires the problems of the interaction of the electromagnetic wave with disperse particles have to be solved simultaneously with the coupled heat and mass transfer problem with accounting for heating, evaporation and other effects, which that appear, for example, during interaction of the electromagnetic field with liquid crystal particles. The interaction of electromagnetic waves with nano- and meso-particles is particularly important when modeling and designing numerous technologies of nanomaterial manufacturing. In this work, the interaction of electromagnetic waves with a two-layer spherical nanostructure was investigated. The propagation of longitudinal electromagnetic waves, the influence of which can be very important in the case of meso- and nano-sized particles, and the influence of electromagnetic radiation on thermophysical processes were studied simultaneously. A new algorithm for modeling the interaction of longitudinal electromagnetic waves with the systems being studied here was developed using the solution of the Maxwell-Schrödinger equations. Several relevant examples of the interaction of electromagnetic waves with nonlinear media were investigated and the possibility of the Aharonov-Bohm effect for longitudinal waves, associated with the influence of the quantum nature of nanoparticles, was pointed out. The possibility of a noticeable contribution of longitudinal waves as components of the electromagnetic field in the case of meso- and nanosystems was pointed out. The densities of the heat sources caused by transverse and longitudinal waves were derived, heat exchange with these heat sources was studied, and the possibilities of phase transitions such as melting and evaporation caused by the heat sources were also explored. Here we also show that near the critical point, the relationship for the heat capacity in the form of a power function of the ratio of the difference between the critical temperature and the media temperature to the critical temperature can be expressed in terms of the densities of the heat sources caused by the transverse and longitudinal waves.

Proceedings Article | 23 November 2024 Paper

A new method for identifying the key indicators and dependencies in the processing of images of helical surfaces of conical cutters obtained with the optical measuring machine

Petr Pivkin, Anton Yazev, Ekaterina Nazarenko, Artem Ershov, Vladimir Kuznetsov, Maxim Karpov, Alexander Zelensky, Xiaohui Jiang, Zhiwen Huang, Rao Yao, Nikolay Tcherniega, Anna Kudryavceva, Liudmila Uvarova, Alexey Nadykto

Proceedings Volume 13239, 132391U (2024) https://doi.org/10.1117/12.3037644

KEYWORDS: Image processing, Manufacturing, Optical surfaces, Design, Optical testing, Reliability, Reflection, Imaging systems, Image segmentation, Control systems

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In this study, a new method for identifying the key indicators and dependencies in processing images of helical surfaces of conical cutters at the main stages of the production cycle, which is based on the relationships between the shape of the cutting edges, the angle of inclination of the helical flute, clearance angle, color intensity and image brightness, has been developed. Design and geometric parameters were exported from the simulations with the model created by the automated system for designing conical cutters, which determines the dimensions, shape and geometric parameters of the cutting part of the tool. The identified dependencies allow determining the active zone and the transfer coefficient at the interface between the rear surface and the measuring machine and a stable connection is carried out with a group of cutting part parameters obtained from the results of the CAD system. A high-resolution image of the flank surface boundary zone is scanned with an optical camera on a specialized machine, and the improved method was used to quantitatively calculate the boundary The controlled measurements of a set of point coordinates and geometric parameters of the helical surface of a conical cutter forms a system for a comprehensively studying the designs of conical cutters and the physical mechanisms of their production using image analysis based on the developed indicator interpretation system, which is a foundation for a unified digital cyber-physical production system to be developed. The combination of improved performance or expanded functional capabilities with increased rigidity and reliability, which enables the processing of a wider range of structural designs of part surfaces, is the primary competitive advantage of the new generation of cutting tools with unique working surface geometries. These tools are designed and manufactured using a developed cyberphysical system from contemporary tool materials. With the least amount of frames, the new method's application enables the quickest possible identification of findings that are appropriate for monitoring the back surface of the cutting tool class under consideration.

Proceedings Article | 23 November 2024 Paper

A high-precision system for processing images of the physical model of the impeller obtained by the optical system in transmitted and reflected light

Petr Pivkin, Artem Ershov, Vladimir Grechishnikov, Mikhail Yu. Prus, Anton Yazev, Xiaohui Jiang, Luidmila Uvarova, Alexey Nadykto

Proceedings Volume 13239, 132391T (2024) https://doi.org/10.1117/12.3037620

KEYWORDS: Image processing, Cameras, Reflection, Optical surfaces, Image sharpness, Matrices, Photography, Control systems, Algorithm development, Interpolation

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Proceedings Article | 20 November 2024 Poster + Paper

Spatiotemporal characteristics of radiation from photonic crystals in the presence of strong electromagnetic fields

Maxim Karpov, Nikolay Tcherniega, Anna Kudryavceva, Anton Baldin, Vitold Bleko, Yuri Bazarov, Anton Khristenko, Anton Yazev, Petr Pivkin, Alexey Nadykto

Proceedings Volume 13244, 1324410 (2024) https://doi.org/10.1117/12.3037628

KEYWORDS: X-rays, X-ray detectors, Matrices, Raman scattering, Photonic crystals, Electromagnetic radiation, Acoustics, Ultraviolet radiation, Mechanoluminescence, Biological samples

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Proceedings Article | 20 November 2024 Poster + Paper

A computer vision system for measuring the geometric parameters of helical surfaces obtained by multicoordinate grinding on CNC machines

Petr Pivkin, Anton Yazev, Vladimir Grechishnikov, Ekaterina Nazarenko, Elena Yu. Malysheva, Lyudmila Uvarova, Alexey Nadykto

Proceedings Volume 13241, 1324124 (2024) https://doi.org/10.1117/12.3037374

KEYWORDS: Image processing, Surface finishing, Image segmentation, Computing systems, Computer vision technology, Matrices, Abrasives, Control systems, Cameras

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Helical surfaces are important elements of solid end mills. Their production is carried out using multi-coordinate grinding. Shape errors and reduction in the quality of the screw surface appear due to abrasion, high pressure, and wear of the grinding wheel. Therefore, it is extremely important to measure geometric accuracy, to perform linear and angular measurements, and to study the properties of rake helical surfaces. The paper proposes improvements to monitoring of helical surfaces via the use of a new computer vision system for assessing microtexture on helical surfaces after multiaxis grinding on CNC machines. A computer vision system was developed to evaluate defects on helical surfaces after multi-coordinate grinding on CNC machines, and a comprehensive analysis of existing indicators for recognizing the defect was carried out in a guaranteed range of probability of finding a solution of 99.7% for the distribution density of grinds. To verify the developed method, the accuracy of surfaces obtained by using the one was compared with the measurements carried out using specialized equipment for the control of the accuracy of helical surfaces. A new system for monitoring the accuracy and defects of cutting edges, helical front and rear surfaces allows establishing the main geometric parameters of the cutting edges and cutting wedge such as flute angle and rake angle at the apex using key indicators of the difference in color intensity in the focal zone of the image. When developing this approach, it was found that areas with smaller curvature of the rake surface are more susceptible to the accumulation of helical flute pitch errors after grinding. Experimental studies of the system operation were conducted to provide empirical evidence on helical surfaces after multiaxis grinding on CNC machines, demonstrating excellent convergence and defect recognition accuracy. The accuracy of determining the results of the inclination angles of the microtexture surface after grinding at the control point is 2-2.5 degrees, which allows you to form a comprehensive solution for scanning the surface, which will allow you to apply a simple method of control using a camera in reflected light.

Proceedings Article | 15 November 2024 Paper

Laser cladding of wear-resistant coatings based on chromium and molybdenum carbides

P. Pivkin, P. Yu Peretyagin, S. Shechtman, N. Krikheli, O. Kramar, N. Sukhova, A. Shein, N. Undritsova, S. Grigoriev

Proceedings Volume 13234, 132340Y (2024) https://doi.org/10.1117/12.3040573

KEYWORDS: Cladding, Resistance, Protective coatings, Coating thickness, Adhesion, Molybdenum, Laser processing, Laser applications, Chromium, Thermal stability

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Proceedings Article | 8 November 2024 Poster + Paper

Application of photonic crystals for microwave and terahertz radiation generation

Maxim Karpov, Nikolay Tcherniega, Anna Kudryavceva, Anton Baldin, Vitold Bleko, Yuri Bazarov, Anton Khristenko, Petr Pivkin, Alexey Nadykto

Proceedings Volume 13247, 132470W (2024) https://doi.org/10.1117/12.3037623

KEYWORDS: Photonic crystals, Crystals, Microwave radiation, Electron beams, Terahertz radiation, Quartz, Electromagnetic radiation, Silicon, Beam diameter, Silica

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Proceedings Article | 8 November 2024 Poster + Paper

New technological solutions for the manufacturing and sharpening of three-flute drills

Petr Pivkin, Artem Ershov

Proceedings Volume 13234, 132340W (2024) https://doi.org/10.1117/12.3037625

KEYWORDS: Micro cutting, Laser cutting, Computer aided design, Modeling, Laser drilling, Manufacturing, Mathematical modeling, Laser ablation, Process modeling

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In high-precision mechanical engineering, the need for small-sized products has been steadily increasing over the past decades and, thus, small-sized cutting tools are used for their production. Laser processing has become one of the most convenient and effective technologies. A new approach to manufacturing micro-cutting three-prong drills is based on the laser ablation technology, which allows to remove material from the workpiece surface regardless of its and has a small zone affected by heating. Laser ablation does not cause workpiece deformation or wear, which ensures high precision of shaping. The work presents a special technology of continuous impact on a section of the front and rear surfaces when forming a sharpening in the form of a set of B-splines. The splines are arranged in such a way that, as a result of removing material from the end of the drill, the cutting wedge forms an angle close to constant with a minimum duration of laser exposure, ensuring in this way the edge. Thus, the algorithm allows forming the working part of a three-tooth drill depending on the diameter, offset of the cutting edge, angle of inclination of the helical flute, front and rake angles of the blade. The new technology allows, for the first time, to form a point and back surface with constant angles on microcutting three-tooth drills with a minimum duration of laser exposure, in particular, when restoring restoration or cyst pointing of the cutting part of the drill. Unlike the known model of the tool is not discredited by the edge sections and the formation of the standard form of the flank surface but creates geometry along the freely formed cutting edge. The goal of minimizing the number of necessary physical tests while expanding the capabilities of the modeling results is achieved. The mathematical model of the process of forming the main rear surface of the drill will ensure the constancy of the normal clearance angle along the cutting edge of a freely shape.

Proceedings Article | 8 November 2024 Poster + Paper

Effect of laser power and focal spot size on the performance of LPBF systems

P. Peretyagin, W. Makoana, I. Yadroitsev, P. Pivkin, N. Krikheli, O. Kramar, R. Khmyrov, P. Podrabinnik, P. Naumenko, S. Grigoriev

Proceedings Volume 13234, 132340M (2024) https://doi.org/10.1117/12.3039766

KEYWORDS: Laser soldering, Beam diameter, Manufacturing, Laser stabilization, 3D tracking, Particles, Laser systems engineering, Solids, Laser welding, Laser processing

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Proceedings Article | 20 June 2024 Presentation + Paper

Digital twin of the technological process for grinding helical flutes of a cutting tool

Petr Pivkin

Proceedings Volume 13000, 1300003 (2024) https://doi.org/10.1117/12.3022984

KEYWORDS: Image processing, Matrices, Image sharpness, Digital image processing, Design, Sensors, Error analysis, Control systems, Profiling

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Proceedings Article | 20 June 2024 Poster + Paper

Physical and technological aspects of formation of metal matrix composites by laser-powder bed fusion

Petr Pivkin, Andrey Gusarov, Roman Khmyrov, Pavel Podrabinnik, Nikolay Babushkin, Pavel Peretyagin, Sergey Grigoriev, Igor Yadroitsev

Proceedings Volume 13005, 1300510 (2024) https://doi.org/10.1117/12.3022539

KEYWORDS: Particles, Materials properties, Copper, Matrices, Composites, Metals, Titanium, Alloys, Iron, Mixtures

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Proceedings Article | 20 June 2024 Poster + Paper

Method for detecting defects in direct metal deposition using a neural network

P. Pivkin, N. Khodanovich, S. Grigoriev, P. Peretyagin

Proceedings Volume 13005, 1300511 (2024) https://doi.org/10.1117/12.3022863

KEYWORDS: Neural networks, Education and training, Defect detection, Artificial neural networks, Metals, Image processing, Visual process modeling, Neurological disorders, Deep learning, COVID 19

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Proceedings Article | 18 June 2024 Poster + Paper

A new algorithm for recreating the technological process of high-speed multicoordinate processing based on improving key indicators of image recognition

Petr Pivkin, Artem Ershov, Vladimir Grechishnikov, Lyudmila Uvarova, Vladimir Kuznetsov, Anton Yazev, Michail Prus, Dazhong Wang, Xiaohui Jiang, Rao Yao, Alexey Nadykto

Proceedings Volume 12998, 129981Q (2024) https://doi.org/10.1117/12.3022523

KEYWORDS: Image processing, Profiling, Detection and tracking algorithms, Image filtering, Design, Control systems, Point clouds, Tunable filters, Resistance, Reflection

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Proceedings Article | 18 June 2024 Poster + Paper

A new method and practical recommendations for measuring geometric accuracy, linear and angular measurements of helical surfaces of end mill for HSM

Petr Pivkin, Anton Yazev, Artem Ershov, Lyudmila Uvarova, Alexey Nadykto

Proceedings Volume 12998, 129981R (2024) https://doi.org/10.1117/12.3022861

KEYWORDS: Profiling, Image processing, Cameras, Image segmentation, Teeth, Reflection, Process control, Manufacturing, Error analysis, Digital image processing

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In precision engineering, helical surfaces on critical parts of equipment have become widespread. The article proposes an new method and practical recommendations for measuring geometric accuracy, linear and angular measurements, and studying the characteristics of helical surfaces and specialized equipment for monitoring the accuracy of helical surfaces. The uniqueness of the approach lies in the formation of key indicators of classification and filtering of a set of specialized measurement techniques based on scanning and digital image processing. A new method is proposed that makes it possible to adjust the measurement of the coordinates of the profile points of the helical surface in the radial section according to the shape of the focal area on the helical surface obtained by a reflected light camera. The work established new indicators of the effectiveness of tool control for high-speed multi-axis milling based on recommendations for the selection of methods and means of monitoring and control at the stage of technological preparation of production in real time. Criteria and indicators have been formed to eliminate errors at any stage in the process of digital control of images of the helical surface of a cutting tool for high-speed machining. The method consists in determining the law of preserving the shape of the profile, its further rotation and comparison with the original control profile by identifying a new relationship between the focal length and the profiling shape. The shape of the profiling curve is described depending on the angle of inclination of the helical flute, diameter, segmentation of the image in the focal zone and the magnitude of the error when measuring the profile in real time relative to the base profile. In this regard, the work justifies the practical adaptation of the search results for key measurement schemes in comparison with other existing methods for helical surfaces with an rake angle of the tangent to the profile in the axial section. The new level of production creates greater demand for product quality efficiency in a unified digital environment. As an advanced solution, the work proposes a method for compensating for errors in the shape of the focus area. This method allows you to compensate for the error in real time without stopping for readjustment. More accurate results allowed for an increase in accuracy up to 10 times compared to existing methods.

Proceedings Article | 27 November 2023 Poster + Paper

Computer-aided design system for a drill with an improved shape of the flunk surface

Petr Pivkin, Artem Ershov, Vladimir Grechishnikov, Inna Botryakova, Alexey Nadykto

Proceedings Volume 12762, 1276211 (2023) https://doi.org/10.1117/12.2691036

KEYWORDS: Laser drilling, Laser ablation, Computer aided design, Computing systems, Teeth, Kinematics, Design and modelling, Control systems

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Proceedings Article | 27 November 2023 Poster + Paper

Computer-aided design system for the end mill made by laser ablation and grinding

Petr Pivkin, Anton Yazev, Vladimir Grechishnikov, Artem Ershov, Ilya Minin, Alexander Zelensky, Elena Alenina, Xiaohui Jiang, Alexey Nadykto

Proceedings Volume 12762, 1276210 (2023) https://doi.org/10.1117/12.2690322

KEYWORDS: Design and modelling, Computer aided design, Kinematics, Laser cutting, Computing systems, Teeth, Thermal deformation, Materials processing, Manufacturing

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Proceedings Article | 27 November 2023 Poster + Paper

An approach for recognizing surface defects in products with a complex helical shape

Petr Pivkin, Anton Yazev, Vladimir Grechishnikov, Artem Ershov, Ilya Minin, Alexander Zelensky, Elena Alenina, Xiaohui Jiang, Alexey Nadykto

Proceedings Volume 12767, 127671T (2023) https://doi.org/10.1117/12.2690093

KEYWORDS: Quality control, Manufacturing, Image analysis, Detection and tracking algorithms, Reflection, Inspection, Industry, Histograms, Diamond

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Proceedings Article | 27 November 2023 Poster + Paper

New indicators and standards for measuring of the end mill's helical groove by image processing

Petr Pivkin, Artem Ershov, Vladimir Grechishnikov, Vladimir Kuznetsov, Ekaterina Nazarenko, Elena Yu. Malysheva, Alexey Nadykto

Proceedings Volume 12769, 127691P (2023) https://doi.org/10.1117/12.2690091

KEYWORDS: Image processing, Standards development, Reflection, Optical surfaces, Optical metrology, Inspection

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