Міжнародні видання. Факультет інженерно-технологічний

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https://dspace.pdau.edu.ua/handle/123456789/44

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A mechanized assembly for erecting soil-cement barriers to protect agricultural lands from low-active waste during flood
(2024) Петраш, Олександр Васильович; Petrash, O. V.; Zotsenko, V.; Петраш, Руслан Васильович; Petrash, R. V.; Попович, Наталія Миколаївна; Popovych, N. M.; Рожко, Ілона Іванівна; Rozhko, I. I.; Danova, K.; Malysheva, V.; Nikitchenko, O.; Nikitchenko, O.; Moroz, M.; Bogatov, O.
The object of this study is the process of constructing a waterproof underground barrier from local soil using loess loam and medium-sized sand as an example. The values of waterproofing of soil cements on different types of soil and the norms of net labor consumption corresponding to them were obtained. The research solves the task of protecting agricultural lands in the areas of geological burials of low-level radioactive waste. Configuration of a mechanized drilling mixing assembly for installing a waterproof barrier in the field has been proposed. Waterproofness of soil cement on clay and sandy soils was determined experimentally. The corresponding norms of the net consumption of time for manufacturing the barrier in these soils have been determined. Units of the mechanized assembly are repairable, utilize widely available materials, parts, and mechanisms. As a result of studies on the labor intensity of the installation of soil cement, a net labor rate was established, which varies from 35 to 52 min/m3 depending on the type of soil. The corresponding values of waterproofness, which ranged from W6 to W14, were determined, which substantiates the possibility of effective functioning of soil-cement underground barriers. Options for the structural solution for impenetrable barriers have been offered. The values of the obtained net time rates are explained by the high degree of mechanization of the technological process and the use of local materials. A distinctive feature of the results is the emphasis on the data collection on the time consumption of machines and mechanisms, the characteristics of local soils under production conditions, and the use of local materials. The assembly implies using affordable and repairable units that can be serviced right in the field. Given this, the manufacturability of the proposed process was defined, confirmed by time-keeping studies. The realm of practical application of the reported results are sites within flat areas with sandy or loess bases. Barrier solutions are designed exclusively for geological waste storage facilities under the conditions of a high level of groundwater and the presence of a waterproof layer at the base.
An analytical solution to the problem of thermoelastic bending of a multilayer beam with different temperature of longitudinal faces
(2021-06) Ковальчук, Станіслав Богданович; Горик, Олексій Володимирович
Analytical Solution of the Problem of Thermoelastic Deformation of a Nonuniformly Rotating Multilayer Disk
(2020-03) Ковальчук, Станіслав Богданович; Горик, Олексій Володимирович; Зiньковський, Анатолiй Павлович
Analytical Solution to the Plane Bending Task of the Multilayer Beam with a Circular Axis under Normal Uniform Loading
(2020-09) Ковальчук, Станіслав Богданович
Application of tne fish search algorithm for optimization plans of the full factor experiment
(IEEE Operations Center 445 Hoes Lane,P.O. Box 1331, Piscataway, NJ 08855-1331 USA, 2018) Muratov, V. ; Koshevoy, M.; Kostenko, O. M.; Костенко, Олена Михайлівна
A method and program was developed to optimize the plans for a full factorial experiment using the search algorithm for fish. A comparative analysis of methods for the synthesis of optimal full-scale experiment experiments for cost and time costs has been carried out. The efficiency of the method was tested on a number of such technological objects: fuel consumption in the internal combustion engine, welding of thin plates, production of parts by hot stamping, and also the process of servicing machines with numerical control. The effectiveness of the method of searching for fish by the school is shown.
Bimetallic Temperature Sensors
(2019) Koshevoy, M. ; Koshevaya, I.; Fesenko, A.; Kostenko, O. M.; Костенко, Олена Михайлівна
Building an analytical model of the gravitational grain movement in an open screw channel with variable inclination angles
(2021-07-01) Арендаренко, Володимир Миколайович; Антонець, Анатолій Вікторович; Іванов, Олег Миколайович; Дудніков, Ігор Анатолійович; Самойленко, Тетяна Володимирівна
Classification rule for determining the temperature regime of induction gray cast iron
(2021-01-30) Stanovska, Iraida; Duhanets, Vasyl; Prokopovych, Lada; Yakhin, S. V.; Яхін, Сергій Валерійович
Conductive frying of meat:current state and prospects
(2025-12-18) Скрипник, Вячеслав Олександрович; Skrypnyk, V. O.; Yeleussinov, B.; Семенов, Анатолій Олексійович; Semenov, A. O.
The monograph analyzes the current state of processes and equipment for conductive meat frying. A methodology for evaluating the energy and resource efficiency of meat frying processes and equipment has been developed. Based on this methodology, potential directions for improving the energy and resource efficiency of these processes and devices have been identified. A scientific concept is proposed, which involves creating conditions for intensified heat transfer during conductive frying by employing various physical and electrophysical methods—such as the application of electric current combined with compression, compression in a functionally closed volume, or in functionally closed chambers. The concept is supported by research results obtained from experimental prototype devices. The monograph is intended for academic staff, postgraduate and master's students, researchers, and professionals in the field of food production.
Development of an analytical model of the controlled movement of grain material on the bulk shelves of a loading-gravity-cascade unit
(2025-06-17) Antonets, A.; Антонець, Анатолій Вікторович; Arendarenko, V.; Арендаренко, Володимир Миколайович; Ivanov, O.; Іванов, Олег Миколайович; Dudnikov, I.; Дудніков, Ігор Анатолійович; Liashenko, S.; Ляшенко, Віктор Васильович
The object of research is the gravitational movement of grain along the transfer shelves and a cascade loading unit with two acceleration and two braking sections. The study of such movement is carried out to confirm theoretical studies on the development and justification of an analytical model of controlled gravitational movement of grain along transfer shelves. When loading grain, it can be injured when falling from a considerable height and hitting the bottom and walls of the container. This problem requires the development and study of a technical solution that would provide regulation of the velocity of grain movement when loading it into the container. Theoretical studies were carried out using the developed analytical model of grain movement and the proposed equations to find the relationships between the angles of inclination of the acceleration and braking shelves of the gravity-cascade unit. Based on the analytical model, an experimental unit was made of two acceleration and two braking shelves. The shelves can freely rotate on the axes to the required angle in the range from 0° to 90° relative to the horizontal plane. For the shelves of the acceleration sections, the angle of inclination α was chosen from the variable series of 45°, 50°, 60°. Based on the angle α, according to the model, the shelf of the first braking section was set at an angle of 20.43°, 20.48°, 20.32°, and the shelf of the second braking section was set at 38.46°, 35.28°, 29.32°. Experimental studies have shown that the velocity of grain movement is indeed regulated by a combination of the ratios of the angles of the acceleration and braking shelves. In this case, the velocity of grain in the last braking section is close to the initial flow velocity at the beginning of the first acceleration shelf. The values of the absolute and relative errors of the experiments of the experimentally determined velocities and the theoretical value of the velocity indicate quite acceptable limits of deviations for this multifactorial experiment. The relative deviation of the experimental from the theoretical velocity of movement of the grain mass does not exceed 12.76%. The results obtained and their analysis indicate that the presented analytical model and the designed gravity-cascade unit due to the braking and acceleration sections allow solving the problem of controlled movement of the velocity of grain for its loading into containers without injury, in particular into silo structures.
Digital integration of vacuum switching devices in electrical power network systems
(2026-01-21) Семенов, Анатолій Олексійович; Semenov, A. O.; Бичков, Ярослав Михайлович; Bychkov, Ya. M.; Bychkov, Y.; Харак, Руслан Миколайович; Kharak, R. M.
The paper addresses the implementation of vacuum switching devices in combination with digital monitoring and diagnostic systems as an integral component of modern high-voltage electrical networks. Particular attention is focused on the analysis of electrophysical switching processes in a vacuum environment, the structural features of contact assemblies, and the possibilities for integrating circuit breakers into hierarchical control systems in accordance with the Smart Grid concept. The principles of vacuum arc operation, the characteristics of dielectric strength recovery in the inter-contact gap, and the influence of contact materials on the stability of switching regimes are summarized. The architecture of modern monitoring systems based on the IEC 61850 standard is considered, including the use of electrical and thermal sensors, microprocessor-based controllers, and integration at the SCADA/industrial automation level. It is shown that the combination of vacuum circuit breakers with digital control tools ensures a reduction in fault localization time, an increase in equipment availability, and a decrease in operational risks. A generalized structural model of the “vacuum circuit breaker – digital control” system is proposed, suitable for application in 6–35 kV networks and, prospectively, in substations of the 110–220 kV class.
Elasticity Theory Solution of the Problem on Bending of a Narrow Multilayer Cantilever with a Circular Axis by Loads at its End
(2018-11) Ковальчук, Станіслав Богданович
Elasticity Theory Solution of the Problem on Plane Bending of a Narrow Layered Cantilever Beam by Loads at Its Free End
(2018-05) Ковальчук, Станіслав Богданович; Горик, Олексій Володимирович
Elastoplastic Deformation of the Surface Layer of Machinery Constructions on Shot Blasting
(Springer US, 2016-10) Горик, Олексій Володимирович; Зіньковський, Анатолій Павлович; Черняк, Роман Євгенович; Брикун, Олександр Миколайович
Shot blasting results obtained on metal surfaces to be further treated by applying protective nonmetallic coatings were experimentally investigated under different process conditions. The procedure of evaluating the elastoplastic deformation behavior of the surface layer using the experimental-analytical coefficient, which considers the elastoplastic properties of the material, is described. Results of comparing experimental and theoretical data are summarized. The grounds for a possible fracture mechanism on shot blasting of the surface layer of metal products are presented.
Energy Spectrum of Impact Casual Quasimixed Type Signals
(2006) Smerdov, Andrey; Brykun, O. M.; Брикун, Олександр Миколайович
Exact Solution of the Problem of Elastic Bending of a Multilayer Beam under the Action of a Normal Uniform Load
(2019-08) Ковальчук, Станіслав Богданович; Горик, Олексій Володимирович
Exact Solution of the Problem on Elastic Bending of the Segment of a Narrow Multilayer Beam by an Arbitrary Normal Load
(2020-03) Ковальчук, Станіслав Богданович
FROM HARD TO SIMPLE USING «SHISHAKY TECHNOLOGIES»
(Scientific-technical union of mechanical engineering, 2015) Падалка, Вячеслав Вікторович
This work is dedicated to the problem of ecological agriculture. The analysis of existent technologies of minimum till of soil is conducted. The more similar examples to ecological agriculture are separated on the example of such system implanted in PE "Agroecology". We offer a system of concepts of till of soil for maintaining its fertility and growing ecologically clean products of crop production. We light up the problem of insufficient maintenance of moisture and ways of destruction of non-arable sole by mechanical and biological character. We offer an example of technological operations of till of soil that is implanted for ecological and biologically restorative agriculture.
Influence of parameters of omelets’ treatment process with high pressure on their microbiological safety Journal of FOOD and PACKAGING Science, Technique and Technologies
(2018) Sukmanov, V. O.; Сукманов, Валерій Олександрович; Падалка, Вячеслав Вікторович
JUSTIFICATION OF CHOOSING RECOVERY METHOD FOR CYLINDER LINERS OF AUTOTRACTOR ENGINES
(Scientific and Educational Consulting Group "World Science", 2015) Gorbenko, O. V. ; Kelemesh, A. O. ; Горбенко, Олександр Вікторович; Келемеш, Антон Олександрович
The article deals with the choosing of promising recovery method for cylinder liners of autotractor engines. The results of the study of wear resistance of cylinder liners using a variety of process liquids are presented.

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