Bronislav Orlovskyi, O. P. Manoilenko, Dmytro Bezuhlyi
{"title":"Object-Oriented Analysis of Frame 3D Textile Structures","authors":"Bronislav Orlovskyi, O. P. Manoilenko, Dmytro Bezuhlyi","doi":"10.21272/jes.2023.10(2).c4","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).c4","url":null,"abstract":"The article applied an object-oriented approach to analyze complex mechanical and technological objects based on an example of frame 3D textile structure development for objects from composite materials. Based on the research, the principle of global class inheritance of objects was analyzed and summarized using the object-oriented approach for the mechanical-technological structure of 3D fabrics using mechanical technology of sewing, weaving, knitting, and knitting productions. The design scheme of a generalized topology of object-oriented design for mechanical and technological systems of 3D fabrics of sewing, knitting, weaving, and weaving productions was developed. Methods and equipment for manufacturing mechanical-technological frame structures of 3D objects from textile materials were presented. Novel concepts of object = 3D micro-model, object = 2D mini-model, and object = 3D macro-model for frame 3D textile structures were introduced. Principles of inheritance, encapsulation, and polymorphism were applied to applicable models. For anisotropic textile 2D models, typical diagrams are given in polar coordinates for dynamic modulus of elasticity and logarithmic damping decrement.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135958100","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Oleh Haievskyi, Viktor Kvasnytskyi, Volodymyr Haievskyi, Michał Szymura, Larisa Sviridova
{"title":"Refinement of the Process Capability Index Сalculation","authors":"Oleh Haievskyi, Viktor Kvasnytskyi, Volodymyr Haievskyi, Michał Szymura, Larisa Sviridova","doi":"10.21272/jes.2023.10(2).b2","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).b2","url":null,"abstract":"The variability of product performance is the reason for the introduction of special methods to ensure product quality, particularly statistical methods. These include introducing statistical process control (SPC) in production and calculating the process capability index to determine the manufacturing ability to meet the product’s quality requirements. To a large extent, the ability of a process to meet the requirements was determined by the location of the process or the mathematical expectation of the controlled quality characteristic value. Process setup center variability within the boundaries of the Shewhart control chart of the average values was supposed to be the natural state for a statistically controlled process. However, the calculation of the process capability index did not consider the possibility of a shift in the actual value of the process setup center for a controlled characteristic from its mathematical expectation. It was proposed to adjust the process capability index for the setup center’s possible deviation. It demonstrated the possibility of critical errors in determining the ability of a production process to meet requirements without considering the process setup center. The effectiveness of the proposed solutions was also demonstrated by the example of determining the ability of the welding wire manufacturing process to meet the requirements for metal yield strength of the welded joint of metal bridge span constructions.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135954936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Mykola Volokha, Ivan Rogovskii, Serhiy Fryshev, Henryk Sobczuk, Gennadii Virchenko, Petro Yablonskyi
{"title":"Modeling of Transportation Process in a Technological Complex of Beet Harvesting Machines","authors":"Mykola Volokha, Ivan Rogovskii, Serhiy Fryshev, Henryk Sobczuk, Gennadii Virchenko, Petro Yablonskyi","doi":"10.21272/jes.2023.10(2).f1","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).f1","url":null,"abstract":"Based on a critical review of known research and developments in recent years, the article presents a methodology for analyzing the capacity of the sugar beet sweeping-transport complex. The research aims to find rational use of machinery resources in the technological complex. A reloading method of transportation of root crops was considered. Its peculiarity was flexibility, adaptability to weather, and climatic and economic conditions during the gathering of sugar beet. Under favorable weather conditions and the availability of a sufficient number of vehicles, dug roots, removed from the combine from the field by a tractor semi-trailer, were reloaded into the heavy trucks. They were on the road from the edge of the field and transported to the plant. In case of changing conditions (in rainy weather, when the soil was too wet, or when there were not enough vehicles), a cleaner loader was added to the machines complex. After, the production process was carried out in a transshipment or flow-transshipment way. Beet harvesting and transportation of root crops were considered as work of the technological chain, which consists of three links: “field – beet harvester”, “beet harvester – tractor semi-trailer”, and “tractor semi-trailer – vehicle”. The basic steps of the capacity analysis allowed for determining the capacity of the 1st, 2nd, and 3rd links, their comparison, and subsequent analysis and selecting rational options to overcome the possible difference between their values.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136004223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design and Manufacturing of Polymer Composite Materials Using Quality Management Methods","authors":"Khrystyna Berladir, Zuzana Mitalova, Ivan Pavlenko, Justyna Trojanowska, Vitalii Ivanov, Pavlo Rudenko","doi":"10.21272/jes.2023.10(2).b3","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).b3","url":null,"abstract":"Many factors influence the design and manufacturing of products from polymer composite materials. The expert assessment method was applied in the article for the corresponding analysis. A cause-and-effect diagram was built as a result of a preliminary analysis of the influence of factors on the primary indicator of product quality indicators (e.g., wear resistance). Based on the expert assessment results and quality function deployment analysis, the most critical factors affecting wear resistance were obtained: polymer brand, filler shape and size, technological parameters of mixing, pressing, sintering, and mechanical processing. Their impact was studied to establish quantitative dependencies. A stable value of the wear resistance of the product in the manufacturing process can be ensured by timely adjustment of the mixing, pressing, and sintering modes. As a result of the structural analysis of the process of developing materials with predetermined properties at the enterprise according to the IDEF0 methodology, the importance of assessing the risks associated with the process of multi-criteria optimization of their main quality indicators was confirmed.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135952818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Chalyj, S. Moroz, A. Tkachuk, V. Zablotskyi, I. Trokhymchuk, O. Stelmakh
{"title":"Formation of Bearings Parts Waviness in Centerless Mortise Grinding on Rigid Supports","authors":"V. Chalyj, S. Moroz, A. Tkachuk, V. Zablotskyi, I. Trokhymchuk, O. Stelmakh","doi":"10.21272/jes.2023.10(1).a3","DOIUrl":"https://doi.org/10.21272/jes.2023.10(1).a3","url":null,"abstract":"The formation of waviness on the working surfaces of bearing parts is associated with fluctuations in the size of the cut layer of metal and changes in the components of the cutting force. Laplace operators were used to model the centerless grinding system based on the construction of the transfer function and the characteristic equation. It was found that the formation of waviness depends on the position of the hodograph of the movement of the vector of the center of the part in the complex plane, which in turn depends on the geometric parameters of the rigid supports of the centerless grinder machine. This makes it possible, based on hodographs and the angular orientation of their asymptotes, to determine the geometric stability of the process depending on the angles of adjustment of the rigid supports of the grinder machine. Two methodological approaches were used to confirm the correctness of the hypotheses. The first one is a multiplication of wave’s hodographs. The second one is regeneration displacement and the coincidence of the combined hodograph of regeneration and waviness displacement mechanisms with the hodograph of infinitely rigid machine displacement. The diagrams which allow choosing geometry of adjustment of rigid support that allows to increase or decrease parameters of certain harmonics are developed. The 3D diagram allows setting the local minima, characterized by acceptable geometric adjustment conditions, providing regulated waviness of the working surfaces of bearing parts.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135686302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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