Prof. Sergey N. Grigoriev Profile

Prof. Sergey N. Grigoriev

at Moscow State Univ of Technology "STANKIN"

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Author

Publications (18)

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

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 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 | 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 | 7 December 2022 Poster + Paper

New image processing algorithm to control the accuracy of sharpening drills

Petr Pivkin, Vladimir Grechishnikov, Artem Ershov, Sergey Grigoriev S.

Proceedings Volume 12274, 1227419 (2022) https://doi.org/10.1117/12.2641908

KEYWORDS: Image processing, Process control, Cameras, 3D modeling, Solid modeling, Quantization, Optical testing, Mathematical modeling, Visual process modeling

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Proceedings Article | 8 June 2022 Paper

A new method for monitoring grinding processes using accelerometers

Petr Pivkin, Michail Kozochkin, Ilya Minin, Dmitry Allenov, Vladimir Kopylov, Alexey Nadykto, Sergey Grigoriev

Proceedings Volume 12122, 1212217 (2022) https://doi.org/10.1117/12.2622919

KEYWORDS: Lens grinding, Signal processing, Adhesives, Signal generators, Dynamical systems, Diagnostics, Sapphire, Spindles, Process modeling, Micro cutting, Manufacturing

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Proceedings Article | 30 May 2022 Poster + Presentation + Paper

Prediction of the nature of cracking and the paths of crack propagation in nanolayer surface systems based on the method of calculating percolation by nodes and bonds and the scheme of branching processes

Sergey Grigoriev, Mars Migranov, Artem Ershov, Vladimir Tabakov, Petr Pivkin

Proceedings Volume 12091, 120910H (2022) https://doi.org/10.1117/12.2623064

KEYWORDS: Stochastic processes, Multilayers, Mathematical modeling, Resistance, Process modeling, Systems modeling, Chromium, Titanium, Tin

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Proceedings Article | 14 November 2021 Presentation + Paper

A new method definition of cutting surface of drills by image processing flank surface

Petr Pivkin, Vladimir Grechishnikov, Artem Ershov, Sergey Grigoriev

Proceedings Volume 11914, 1191413 (2021) https://doi.org/10.1117/12.2605834

KEYWORDS: Image processing, Edge detection, Video, Composites, Signal processing, Image segmentation, Solids, Remote sensing

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Proceedings Article | 14 November 2021 Poster + Presentation + Paper

Sensor information processing in the control of quality parameters of functional coatings of products deposited by vacuum-arc spraying

Sergey Grigoriev, Mars Migranov, Semen Shekhtman, Artur Migranov, Artem Ershov, Petr Pivkin

Proceedings Volume 11914, 119141C (2021) https://doi.org/10.1117/12.2605753

KEYWORDS: Nanostructuring, Resistance, Corrosion, Ions, Plasma, Multilayers, Thin film coatings, Metals, Plasma generation

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Proceedings Article | 12 September 2021 Presentation + Paper

A new method for efficiently controlling energy use in Electrical Discharge Machining (EDM)

Sergey Grigoriev, Artur Porvatov, Mikhail Kozochkin, Ilya Minin, Anna Okunkova, Marina Volosova, Vladimir Kuptsov, Petr Pivkin

Proceedings Volume 11867, 118670A (2021) https://doi.org/10.1117/12.2602169

KEYWORDS: Electrodes, Dielectrics, Control systems, Liquids, Signal processing, Manufacturing, Power supplies, Explosives

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Rationalizing energy consumption in the Electrical Discharge Machining (EDM) efficiently saves energy and improves machining quality. Since the conventional methods for estimating useful EDM energy are based on theoretical heat transfer studies or empirical assessments of processing conditions, the development of an industrially applicable method for assessing useful energy is an important problem. Here we show that the performance of the EDM process is directly related to acoustic emission (AE). The effectiveness of the proposed method has been evaluated in experiments. As part of the execution of the experiment, AlCuMg1 workpiece was machined using a copper electrode with different duty cycles with pulse widths varying from 10% to 80%. For comparative analysis, the root-mean-square vibroacoustic signal in the range of 1-10 kHz and the root-mean-square of the discharge current were used. It was found that the amplitude of the vibroacoustic (VA) signal monotonically increases with the increasing EDM performance. The properties of the VA signal allows using the VA monitoring to assess the performance of EDM, i.e., to determine the fraction of energy spent on removing the workpiece material. The advantage of the proposed method of monitoring is that the control of useful energy is carried out using accelerometers installed on the parts of the technological system on the workpiece side. The distance from accelerometers to the workpiece being processed can be quite large that is convenient for performing experiments. In particular, in the high frequencies range, the obtained results are protected from mechanical interference coming from drives, hydraulic units and wire rewinding mechanisms. Such VA signals are shown to be important indicators of EDM efficiency because they are observed only if the energy fluxes reach the workpiece surface. This provides a more reliable indication of raising concentrations of electroerosion products that prevents short circuits and breakage of wire electrodes.

Proceedings Article | 12 September 2021 Presentation + Paper

Nanostructured biocompatible Ti-TiN coating for implants with improved functional properties

Sergey Grigoriev, Marina Volosova, Mars Migranov, Ilya Minin, Semen Shekhtman, Nadegda Suhova, Vladimir Gurin, Petr Pivkin

Proceedings Volume 11867, 1186708 (2021) https://doi.org/10.1117/12.2602166

KEYWORDS: Coating, Nanostructuring, Titanium, Corrosion, Resistance, Multilayers, Natural surfaces, Bone

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Proceedings Article | 1 August 2021 Poster + Paper

Combined processing of optical parts through surface polishing with a beam of fast argon atoms and deposition of nanostructured protective films by magnetron target sputtering

Sergey Grigoriev, Alexander Metel, Yury Melnik, Enver Mustafaev, Marina Volosova

Proceedings Volume 11802, 118020V (2021) https://doi.org/10.1117/12.2594368

KEYWORDS: Ions, Polishing, Surface finishing, Plasma, Argon, Sputter deposition, Etching

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Proceedings Article | 1 August 2021 Poster + Paper

Modelling of thermophysical phenomena at cutting tools with thin self-organising coatings

Sergey Grigoriev, Marina Volosova, Mars Migranov, Maksim Rai, Petr Pivkin

Proceedings Volume 11802, 118020P (2021) https://doi.org/10.1117/12.2593803

KEYWORDS: Finite element methods, Thermal modeling, Manufacturing, Composites, Multilayers, Materials processing, Interfaces, Computer simulations, Thin film coatings, Thermodynamics

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Proceedings Article | 12 April 2021 Presentation + Paper

Vibroacoustic monitoring of technological processes employing electrophysical phenomena

Sergey Grigoriev, Mikhail Kozochkin, Artem Ershov, Thein Maung, Sergey Fedorov, Petr Pivkin

Proceedings Volume 11756, 117561F (2021) https://doi.org/10.1117/12.2588698

KEYWORDS: Thin films, Thin film coatings, Waveguides, Visualization, Sensors, Nickel, Laser applications, Electron beams, Diagnostics, Aluminum

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Proceedings Article | 12 April 2021 Presentation + Paper

A new approach for controlling of curved cutting edges of toroid-shaped end-milling cutter

Petr Pivkin, Vladimir Grechishnikov, Ilya Minin, Artem Ershov, Viacheslav Voronin, Alexey Nadykto, Sergey Grigoriev

Proceedings Volume 11732, 117320B (2021) https://doi.org/10.1117/12.2588699

KEYWORDS: Mathematical modeling, Shape analysis, Inspection, Image quality, Image processing, Image enhancement, Image analysis

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Proceedings Article | 12 April 2021 Poster + Presentation + Paper

Features of vibroacoustic monitoring of pulsed laser operation

Sergey Grigoriev, Petr Pivkin, Ilya Minin, Thein Maung, Aleksander Zelensky, Marina Volosova, Mikhail Kozochkin

Proceedings Volume 11724, 117240M (2021) https://doi.org/10.1117/12.2588697

KEYWORDS: Pulsed laser operation, Laser applications, Laser systems engineering

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Proceedings Article | 20 September 2020 Poster + Paper

High-precision method for determining the optimal trajectory of movement of a conical grinding wheel relative to the helical groove of solid ceramic mills

Sergey Grigoriev, Petr Pivkin, Vladimir Grechishnikov, Yuri Petukhov, Marina Volosova, Alexey Nadykto

Proceedings Volume 11540, 115401E (2020) https://doi.org/10.1117/12.2574389

KEYWORDS: Solids, Ceramics, Algorithm development, Nanostructuring, Kinematics, Profiling, Shape analysis, Manufacturing

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Proceedings Article | 20 September 2020 Paper

A new method for modeling edges of a toroidal cutting surface of solid ceramic end mills

Petr Pivkin, Alexey Nadykto, Vladimir Grechishnikov, Marina Volosova, Ilya Minin, Sergey Grigoriev

Proceedings Volume 11540, 115401G (2020) https://doi.org/10.1117/12.2574391

KEYWORDS: Ceramics, Solids, Nanostructuring, Manufacturing, Resistance, Lens grinding equipment

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Showing 5 of 18 publications

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