Issue №: 3 (94)
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.
Investigation of the process of peeling walnuts between two parallel plates
Polievoda Yurii – candidate of technical sciences, associate professor of the department of technological processes and equipment for processing and food production, Vinnytsia National Agrarian University: Vinnitsia, st. Sonyachna 3, VNAU, 21008, e-mail: vinyura36@gmail.com.
The article provides a detailed overview of the process of splitting the kernel of a walnut. Examples of many ways to split the shell are given, all of their disadvantages and advantages are listed. The mechanical method of peeling nuts using low-frequency oscillations has been theoretically investigated and substantiated.
The kinematics of the process of crushing nuts between two parallel plates has been extensively analyzed. Graphical correlations were obtained between the size of the nut shell and the dynamics of the driving force of the nut moisture. It is revealed that the process of destruction of the shell of a walnut consists of four stages, corresponding to the laws of brittle destruction.
Presents: - dependence of the maximum force of crushing of a shell of a nut at 5% humidity; - the dependence of the maximum crushing force of nuts at different shell thickness for the case of horizontal positioning of the nut between two plates with perpendicular force on the surface of the joint halves of the nut; - the dependence of the maximum crushing force according to the humidity of the nuts at different shell thicknesses for the case of vertical positioning of the nut between two parallel plates with a vertical driving force; - the dependence of the maximum crushing force with the moisture of the nuts at different shell thicknesses for the case of horizontal positioning of the nut between two parallel plates with a force action along the slit.
The energy of splitting (crushing) of nuts at their location in different positions between two parallel plates is also determined. Where it has been proved that the energy consumed in the process of crushing increases with the thickness of the shell of a walnut. At the same time, it is proved that energy consumption depends on the location of the nut in the process of crushing. Graph analyzes were performed to show that maximum crushing energy is recorded in the case of a horizontal arrangement of a nut with a perpendicular crack action.
In this study, a large amount of information was obtained regarding the splitting of the walnut, depending on the structural and mechanical characteristics of the products, which in the process of processing are important for the determination of certain rational technological parameters.
1. Dontsova I.V. (2017). Horikh voloskyi – perspektyvna vysokotsinna prodovolcha ta promyslova syrovyna [Walnut – a promising high-value food and industrial raw materials] Aktualni problemy ekonomiky i torhivli v suchasnykh umovakh yevrointehratsii : materialy shchorichnoi naukovoi konferentsii - Topical Problems of Economy and Trade in Modern Conditions of European Integration: Proceedings of the Annual Scientific Conference. 92-98 Lviv [in Ukrainian].
2. Fedosova K. S. (2005). Rozrobka tekhnolohii konservuvannia vodianoho horikha [Development of technology for canning of walnut]. Avtoref. dys... kand. tekhn. nauk - Author's abstract dissertation ... cand. tech. Odesa. nat. acad. food. Technologies. 19 [in Ukrainian].
3. Boiko A.V. (2010). Ustanovka dlia rozkoliuvannia horikhiv [Installation for splitting nuts]. Mizhvuzivskyi zbirnyk «NAUKOVI NOTATKY» Intercollegiate Collection «SCIENTIFIC NOTES». 29, 28-31 [in Ukrainian].
4. Polievoda Y.A., Tverdokhlib I.V. (2019). Vyznachennia fizyko-mekhanichnykh parametriv shkaralupy voloskoho horikha. [Determination of physico-mechanical parameters of walnut shell].Vibratsii v tekhnitsi ta tekhnolohiiakh-Vibrations in technology and technology. 2 (93), 12-17 [in Ukrainian].
5. Yanovych V.P., Honcharuk I.V. [ta in.]. (2018). Rozrobka kompleksu tekhnolohichnykh mashyn dlia hlybokoi pererobky voloskoho horikha. [Development of a complex of technological machines for deep processing of walnut] Zvit pro naukovo-doslidnu robotu - Report on research work, VNAU, 82. [in Ukrainian].
6. Pat. KM 91325 Ukraina. (2014). Vibratsiine obladnannia dlia lushchennia voloskykh horikhiv [Vibrating equipment for shelling of walnuts]. Publ. 25.06.2014. [in Ukrainian].
7. Pat. KM 137018 Ukraina. (2019). Obladnannia dlia lushchennia voloskykh horikhiv [Equipment for shelling of walnuts]. Publ. 25.09.2019. [in Ukrainian].
8. Pat. KM 137176 Ukraina. (2019). Obladnannia dlia lushchennia voloskykh horikhiv [Equipment for shelling of walnuts]. Publ. 10.10.2019. [in Ukrainian].
9. Pat. KM 137177 Ukraina. (2019). Obladnannia dlia lushchennia voloskykh horikhiv [Equipment for shelling of walnuts]. Publ. 10.10.2019. [in Ukrainian].
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.
