Issue №: 2(109)
The journal deals with the problems of vibration technologies and machines, mathematical methods of vibration process studies, information on design and technological development, presents teaching and methodological aspects of teaching in the Higher School of Applied Sciences, where vibration machines and technologies are studied.
RESEARCH OF THE THERMAL CYCLE ON THE SURFACE OF THE BILLET AS A CONSEQUENCE OF PLASTIC DEFORMATION DURING MECHANICAL PROCESSING
Paladiychuk Yuriy – Candidate of Science (Engineering), Associate Professor of the Department of Agroengineering and Technical Service of Vinnitsa National Agrarian University (3 Soniachna St., Vinnitsa, 21008, Ukraine, e-mail: rewet@vsau.vin.ua).
Telyatnіk Inna – postgraduate of Vinnytsia National Agrarian University (3, Solnychna st., Vinnytsia, 21008, Ukraine, e-mail: inna201098@gmail.com).
While the metallurgical characteristics of machined surfaces are constantly improving, there is still a lack of understanding regarding the thermal conditions in which these surfaces are in the process of interaction between the workpiece and the side surface. During machining of high-carbon alloys, very little is known about temperature changes in the internal volume of the machined part, where the workpiece material interacts with the cutting edge of the tool.
In this work, the characteristics of the thermal field and the resulting surface metallurgy induced in high carbon alloys for cutting scenarios involving various combinations of thermomechanical boundary conditions were studied.
The analysis of the development of the thermal field on the surface of the workpiece made it possible to reveal the heating and cooling rates caused by cutting, allowing to describe two different types of thermal cycle, with the structure Heating-Peak-Cooling and Heating-Quasi-isothermal Deformation-Cooling depending on the aggressiveness of the process. The subsurface thermal zone is found to be related to the deformation caused by cutting because it combines information about the magnitude of the thermal field and the speed of the process. It was found that the highest rate of heat generation caused by plastic deformation occurred in the thin surface layers at the beginning of the contact between the workpiece and the side surface, which was related to the conditions under which the white layers are generated.
The analysis of the energy balance indicated the development of a less strong and less impulsive deformation process at greater depths below the surface, which was related to the mechanism of the formation of material resistance layers. Thus, the thermal effect on the processed surfaces was interconnected with their final metallurgical structure, which made it possible to deeply understand the physical conditions that arise when cutting high-carbon alloys.
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2. Paladiichuk Y. (2021). Study of characteristics of growth formation after deformation strength during deforming strength. Architecture Medical sciences Technical science Physics and mathematics. vol. 2. no. 89, pp. 30-35. DOI: 10.24412/2520-2480-2021-289-30-36. [in English].
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About the journal
The journal "Vibrations in Engineering and Technologies" is included in the list of technical scientific publications of Ukraine
(Category "B", Order of the Ministry of Education and Science of Ukraine dated July 2, 2020 No. 886)
Old version of the site: http://vibrojournal.vsau.edu.ua/
The journal "Vibrations in Engineering and Technology" is indexed by the following databases and catalogs:
The certificateof massmedia State registration:kv no 16643-5115 from 30.04.2010 .
Founder of the journal: Vinnytsia National Agrarian University
The journal is devoted to highlighting current issues in engineering, mechanical engineering, and technological processes, including the study of dynamic and oscillatory phenomena in technical systems, the application of mathematical methods for process modeling and analysis, as well as the presentation of results of design-engineering and technological developments. Particular attention is given to the study of vibration processes and their application in modern technologies.
The purpose of the scientific journal “Vibrations in Engineering and Technologies” is to disseminate the results of fundamental and applied research in the field of engineering sciences aimed at developing theoretical foundations and practical approaches to the design, analysis, and improvement of machines, materials, and technological processes, including the use of vibration and oscillatory effects in various sectors of production.
The publication is focused on the formation of a modern scientific and informational environment for the effective exchange of research results, support of innovative development, and implementation of advanced technical solutions in industry, agro-industrial production, and related fields.
The journal promotes the development of interdisciplinary research, the integration of modern engineering approaches, and the enhancement of the efficiency of technological processes and technical systems, including through the rational use of vibration phenomena.
Objectives of the Scientific Journal
To achieve its stated purpose, the journal addresses the following key objectives:
dissemination of results of fundamental and applied scientific research in the fields of mechanics, mechanical engineering, technological processes, machine dynamics, and equipment, as well as in areas related to the application of vibration phenomena in engineering and technologies;
promotion of research aimed at the creation and improvement of machines, mechanisms, and technological equipment based on oscillatory and vibration processes;
support for the implementation of modern technological solutions focused on improving productivity, energy efficiency, and reliability of technical systems;
обеспечение scientific exchange of research results among research institutions, higher education establishments, and industrial enterprises;
development of interdisciplinary cooperation among researchers in the fields of mechanics, materials science, material processing technologies, and automation of technological processes;
dissemination of modern scientific achievements and advanced technologies related to the application of vibration processes in production and technical systems.
Publisher Vinnytsia National Agrarian University
In June 1994 the 2nd International Scientific and Technical Conference "Application of vibrations for technological purposes" was organized on the basis of Vinnytsia State Agricultural Institute. Leading experts in this field, noting the significant contribution to the school of Vibration Engineering under the leadership of P. S. Bernyk, proposed to create a professional all-Ukrainian scientific and technical journal "Vibration in engineering and technology..The journal was foundedat Vinnytsia State Agricultural Institute and P.S. Bernyk was elected to be the chief editor .
For all these years (since 1994) theJournal "vibration in engineering and technology" published 119 issues wherestudy of vibration effects, the creation of progressive energy saving technologies and equipment for their implementation were highlighted.
Currently Ihor Kupchuk, Candidate of Technical Sciences, Associate professor, Associate Professor of the Department of Engineering Mechanics and Technological Processes in the Agricultural Industry Faculty of Engineering and Technology Vinnytsia National Agrarian University is the chief editor of the "Vibrations in engineering and Technology"
The journal "Vibration in Engineering and technology", which has no analogues on the territory of Ukraine, is well known abroad.
