Issue №: 1(104)
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.
PROSPECTS FOR DETECTING DEFECTS IN ROTATING ELECTRIC MACHINES ON THE BASIS OF THE ANALYSIS OF THEIR VIBRATION SIGNALS
Hraniak Valerii – Candidate of Science (Engineering), Associate Professor, Associate Professor of the Department of Power engineering, electrical engineering and electromechanics of Vinnitsa National Agrarian University. (3 Soniachna St., Vinnitsa, Ukraine, 21008, e-mail: titanxp2000@ukr.net)
Solona Olena – Candidate of Technical Sciences, (Ph. D in Engeneering), Associate Professor, Head of the Department of General Technical Disciplines and Occupational Safety, Vinnytsia National Agrarian University (3, Sonyachna Str., Vinnytsia, 21008, e-mail: solona_o_v@ukr.net)
Ensuring the reliability of the operation of technological lines and mechanisms is one of the main conditions for the safe and productive operation of technological equipment. And since one of the key elements of the vast majority of modern equipment and mechanisms are rotating electrical machines, the reliability of the latter largely determines the reliability of the system as a whole.
The paper provides a detailed analysis of the prospects of using vibration signals to detect defects in rotating electrical machines. As a result of a statistical study conducted on the basis of studying the causes of emergency failures that occur during the operation of medium-power asynchronous electric motors based on the DTG "Energomash" and the analysis of literary sources, the most probable defects that occur during the operation of rotating electrical machines were identified. In particular, it was found that the most probable defects that occur during the operation of such equipment can be attributed to: rotor imbalance, bearing damage, asymmetry of the stator electromagnetic field and violation of the mechanical rigidity of the supporting structures.
Based on the study, it was theoretically substantiated and experimentally confirmed that the most common types of defects that are typical for rotating electrical machines cause a significant vibration response. In this case, the vibration response, containing information about the existing defects of electrical machines, can be measured directly in the operating mode of the electrical machine without the need to intervene in the design of the latter.
It was also shown that defects of various types that occur during the operation of rotating electrical machines are characterized by a relatively low severity in the early stages of defect development and selectivity, both in shape and in the frequency spectrum. Therefore, it is obvious that it is necessary to develop highly informative signs of the presence of defects of the considered type, characterized by increased severity and selectivity.
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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.
