Zhurnal inzhenernikh nauk最新文献_第2页

Innovations in a Modern Engineering Enterprise in the Context of Industry 4.0 Strategy 工业4.0战略背景下现代工程企业的创新

Zhurnal inzhenernikh nauk Pub Date : 2023-01-01 DOI: 10.21272/jes.2023.10(2).a1

Romana Hricová, Renáta Madzinová

{"title":"Innovations in a Modern Engineering Enterprise in the Context of Industry 4.0 Strategy","authors":"Romana Hricová, Renáta Madzinová","doi":"10.21272/jes.2023.10(2).a1","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).a1","url":null,"abstract":"Innovations are an essential part of business management in modern society. In addition to large enterprises and research and development centers, small and medium-sized enterprises also hide great innovative potential. Moreover, it is precisely the innovations that lead businesses to permanent growth and prosperity. In addition, from the point of view of Industry 4.0, innovation must be considered as an essential part of the functioning of a modern enterprise, regardless of its size. The article compares statistical indicators that capture enterprises’ innovative activity or inactivity in the Slovak Republic. Enterprises that want to define themselves as innovative should have a suitably prepared and functioning environment, while internal and external conditions are essential. However, it turns out that Slovakian companies have not created suitable conditions for innovation, and in the long term, their interest in innovation is declining. At the same time, because of the industrial revolution, many professions are also changing, and the demands for specific knowledge are not only growing for the newly created ones, but they will also require an active approach to changes, i.e., innovations. Companies must introduce an innovative approach in the education process itself, and as it shows, it will not be possible without a systemic approach.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"24 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":"135913341","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}

引用次数: 0

Improvement of the Quality of 3D Printing in the Mass Production of Parts 3D打印在零件批量生产中的质量提升

Zhurnal inzhenernikh nauk Pub Date : 2023-01-01 DOI: 10.21272/jes.2023.10(2).b1

Viktor Rud, Oleksandr Zaika, Ludmila Samchuk, Y. S. Povstyana

引用次数: 0

Energy-Saving Individual Heating Systems Based on Liquid-Vapor Ejector 基于汽液喷射器的节能供热系统

Zhurnal inzhenernikh nauk Pub Date : 2023-01-01 DOI: 10.21272/jes.2023.10(2).g1

Serhii Sharapov, Jozef Bocko, Sviatoslav Yevtushenko, Vitalii Panchenko, Maksym Skydanenko

{"title":"Energy-Saving Individual Heating Systems Based on Liquid-Vapor Ejector","authors":"Serhii Sharapov, Jozef Bocko, Sviatoslav Yevtushenko, Vitalii Panchenko, Maksym Skydanenko","doi":"10.21272/jes.2023.10(2).g1","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).g1","url":null,"abstract":"The problem of increasing the efficiency of individual heating systems is solved by using heat pumps based on a liquid-vapor ejector with the working fluid R718 (water). The research object was the working process of the liquid-vapor ejector, based on the principle of jet thermal compression. It involves the generation of vapor in the nozzle of the motive flow of the liquid-vapor ejector and does not require its supply from an external source. Schemes and descriptions of the traditional system and the proposed scheme were given. Their difference from the traditional ones was indicated according to the schematic solution and working cycle. The article compared the proposed schemes’ thermodynamic calculation with the working flow R718 and traditional heat pump systems with carried-out refrigerants R134a, R410a, and R32. As a result, the values of the thermodynamic parameters of all system components were obtained. The coefficients of performance (COP) for the traditional and proposed cycles were determined. Applying the new scheme made it possible to increase the COP by an average of 40 %. An exergy analysis assessed the expediency of implementing vacuum units based on liquid-vapor ejectors in individual heating systems. This made it possible to compare systems that use several types of energy (e.g., electrical, thermal) and to determine their efficiency with high accuracy. As a result of the exergy analysis, the value of the proposed scheme’s exergy efficiency was obtained.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"36 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":"136003928","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}

引用次数: 1

Development of Product Supply Chain Strategy Using BMC and Axiomatic Design 基于BMC和公理设计的产品供应链战略开发

Zhurnal inzhenernikh nauk Pub Date : 2023-01-01 DOI: 10.21272/jes.2023.10(2).a6

Yotsaphat Kittichotsatsawat, Erwin Rauch, Manuel Woschank, Korrakot Tippayawong

{"title":"Development of Product Supply Chain Strategy Using BMC and Axiomatic Design","authors":"Yotsaphat Kittichotsatsawat, Erwin Rauch, Manuel Woschank, Korrakot Tippayawong","doi":"10.21272/jes.2023.10(2).a6","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).a6","url":null,"abstract":"Product is an essential industrial manufacturing that creates high economic value worldwide. Global entrepreneurs’ lack of marketing management led to a severe problem in the manufacturing preparation and control of the supply chain. Therefore, this research aims to develop the product supply chain using axiomatic design and a model canvas to generate a product manufacturing model. A particular case study proved the results. The result showed a suitable model for the product supply chain that can increase entrepreneurs’ profitability through the matrix design. As a result, a suitable model was created for Thailand’s industry. For this purpose, axiomatic design was applied to create a model that could increase supply chain efficiency. In addition, the implications provide capacity and readiness for manufacturers. The output of the appropriate model allows for developing and improving the supply chain strategy according to the Industry 4.0 strategy. However, this model should be tested in manufacturing enterprises to increase reliability. According to the applied methods and described management tools, entrepreneurs can operate their enterprises sustainably and gain market profitability in the future.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"294 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":"135446854","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}

引用次数: 0

The Distribution Pattern of Machining Errors on Woodworking Machine Tools 木工机床加工误差的分布规律

Zhurnal inzhenernikh nauk Pub Date : 2023-01-01 DOI: 10.21272/jes.2023.10(2).a5

Maria Pylypchuk, Lidiia Dziuba, Volodymyr Mayevskyy, Zoya Kopynets, V. I. Taras

{"title":"The Distribution Pattern of Machining Errors on Woodworking Machine Tools","authors":"Maria Pylypchuk, Lidiia Dziuba, Volodymyr Mayevskyy, Zoya Kopynets, V. I. Taras","doi":"10.21272/jes.2023.10(2).a5","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).a5","url":null,"abstract":"The article aims to develop a methodology for calculating and predicting the distribution patterns of wood machining errors to assess the operating conditions of the machine tool according to the technological accuracy criterion. It was analytically proven and experimentally confirmed that Weibull’s law accurately describes the distribution pattern of machining errors on woodworking machines. Based on the results of experimental studies of the accuracy of machining on machines for lengthwise sawing and plano-milling of wood, it was found that the primary indicator of the Weibull distribution law is a shape parameter that takes values within 1.89–3.11. The computational algorithm was developed for statistical modeling of the pattern of the distribution of machining errors according to the Weibull distribution law. It allows for determining the main parameters of the error distribution law and evaluating the operating conditions for the machine tool according to the technological accuracy criterion. The statistical modeling results for the distribution pattern of machining errors are correlated with the experimental data with an accuracy of up to 5 %, which confirms the reliability of the obtained simulation results. The developed approach also minimizes the restoration cost for the machine’s operability.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"35 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":"136366606","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}

引用次数: 0

Approximate Symmetries and Conservation Laws for Mechanical Systems Described by Mixed Derivative Perturbed PDEs 用混合微分摄动偏微分方程描述的机械系统的近似对称性和守恒律

Zhurnal inzhenernikh nauk Pub Date : 2023-01-01 DOI: 10.21272/jes.2023.10(2).e2

Adnan Shamaoon, Praveen Agarwal, Clemente Cesarano, S. Jain

{"title":"Approximate Symmetries and Conservation Laws for Mechanical Systems Described by Mixed Derivative Perturbed PDEs","authors":"Adnan Shamaoon, Praveen Agarwal, Clemente Cesarano, S. Jain","doi":"10.21272/jes.2023.10(2).e2","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).e2","url":null,"abstract":"This article focuses on developing and applying approximation techniques to derive conservation laws for the Timoshenko–Prescott mixed derivatives perturbed partial differential equations (PDEs). Central to our approach is employing approximate Noether-type symmetry operators linked to a conventional Lagrangian one. Within this framework, this paper highlights the creation of approximately conserved vectors for PDEs with mixed derivatives. A crucial observation is that the integration of these vectors resulted in the emergence of additional terms. These terms hinder the establishment of the conservation law, indicating a potential flaw in the initial approach. In response to this challenge, we embarked on the rectification process. By integrating these additional terms into our model, we could modify the conserved vectors, deriving new modified conserved vectors. Remarkably, these modified vectors successfully satisfy the conservation law. Our findings not only shed light on the intricate dynamics of fourth-order mechanical systems but also pave the way for refined analytical approaches to address similar challenges in PDE-driven systems.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"162 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":"135446864","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}

引用次数: 0

The Influence of Surface Irregularities on the Mechanical Properties of Thin-Walled Wire and Arc Additively Manufactured Parts 表面不规则性对薄壁线材和电弧增材件力学性能的影响

Zhurnal inzhenernikh nauk Pub Date : 2023-01-01 DOI: 10.21272/jes.2023.10(2).a2

Denys Molochkov, Ruslan Kulykovskyi, Michail Brykov, Olaf Hesse

{"title":"The Influence of Surface Irregularities on the Mechanical Properties of Thin-Walled Wire and Arc Additively Manufactured Parts","authors":"Denys Molochkov, Ruslan Kulykovskyi, Michail Brykov, Olaf Hesse","doi":"10.21272/jes.2023.10(2).a2","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).a2","url":null,"abstract":"Wire and Arc Additive Manufacturing (WAAM) is a metal additive manufacturing process commonly used to deposition medium to large, near net-shaped parts. It can efficiently use materials and deposit objects with fewer assembly parts. The main disadvantage of WAAM is the surface quality. This work investigates the geometry shift defect that could be formed due to the wear of the welding contact tip. As a result of the wear, the filler wire deviates from the nominal position, and errors occur in the positioning of individual layers of printed parts. The main objective of this work is to investigate the influence of surface irregularities on the mechanical properties of as-deposited thin-walled WAAM parts. Finite element modeling of static and cyclic tensile and compressive tests showed that the surface waviness formed during layer-by-layer deposition increases the stress level under static loading applied transversely to the deposited layers. Surface waviness also significantly reduces the life of parts under cyclic loading. Replacement of a worn contact tip causes the layers to shift, and the resulting load eccentricity increases the stress level. Uneven stress distribution throughout the cross section means reduced material usage efficiency. During compressive loading, the load eccentricity destabilizes, causing the specimen to deform after exceeding the yield strength in stress concentration zones. The relationship between unmachined and machined walls with equivalent stresses was obtained, allowing the influence of surface waviness on the strength and durability of structures to be considered at the design stage.","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":"135913569","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}

引用次数: 0

Cutting Forces Simulation for End Milling 立铣削切削力仿真

Zhurnal inzhenernikh nauk Pub Date : 2023-01-01 DOI: 10.21272/jes.2023.10(2).a4

Yuri Petrakov, Oleksandr Okhrimenko, Maksim Sikailo, Artur Myhovych

{"title":"Cutting Forces Simulation for End Milling","authors":"Yuri Petrakov, Oleksandr Okhrimenko, Maksim Sikailo, Artur Myhovych","doi":"10.21272/jes.2023.10(2).a4","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).a4","url":null,"abstract":"The cutting force in end milling is the essential perturbation of the machining system that limits the productivity of the process. Therefore, forecasting the cutting force when assigning the processing mode and the geometry of the allowance layer to be cut is an urgent task that requires an operational tool for its solution. The method of calculating the cutting force is presented, based on a mechanistic approach, when the geometric ratios of the cutter blades’ positions on the sweep determine the thickness of the undeformed chip. The developed algorithm calculates the cutting force by double integration, first by the length of the cutting edge and then by the number of such edges. The algorithm also allows the simulating of the outrun of the mill on the cutting force and its components. The created application program visualizes the simulating process by oscillograms of the cutting force components for both up and down milling. Experimental studies, in general, proved the adequacy of the developed modeling method. The created program is a tool for operational forecasting of the cutting force during the technological preparation of the end milling process in production.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"167 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":"136366293","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}

引用次数: 0

Prediction of Defects in the Structure of Non-Metallic Heterogeneous Materials 非金属非均相材料结构缺陷的预测

Zhurnal inzhenernikh nauk Pub Date : 2023-01-01 DOI: 10.21272/jes.2023.10(2).c3

Vladimir Tonkonogyi, Maryna Holofieieva, Yurii Holofieiev, Sergii Klimov, Yevheniia Naumenko, Predrag Dašić

{"title":"Prediction of Defects in the Structure of Non-Metallic Heterogeneous Materials","authors":"Vladimir Tonkonogyi, Maryna Holofieieva, Yurii Holofieiev, Sergii Klimov, Yevheniia Naumenko, Predrag Dašić","doi":"10.21272/jes.2023.10(2).c3","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).c3","url":null,"abstract":"Heterogeneous media can be represented as specially organized heterogeneous materials. The complex process of forming heterogeneous materials and media as systems is realized by gradually transitioning from one state to another. The presence of many one-time transformations of space-time structures causes the latter. When simulating damage such as cracks and fractures in products made of non-metallic heterogeneous materials, which consists of “assigning” the place of damage to the product at a specific moment in time, neither the method of random selection from the previously compiled list of “dangerous” places, nor the method of transfer to the object can be used, which is modeled, the results of field and operational tests of other products of a similar class or even other products of the same class. Therefore, it is proposed to use a combined method of obtaining a stream of quasi-random numbers, that is, a stream of random numbers that are “modulated” by information about defects in the structure of the material of the product, which was obtained because of field tests of the products or during their operation.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"9 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":"135958095","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}

引用次数: 0

A Novel Force Control Strategy for Improved Surface Integrity in Low Plasticity Burnishing 一种提高低塑性抛光表面完整性的力控制策略

Zhurnal inzhenernikh nauk Pub Date : 2023-01-01 DOI: 10.21272/jes.2023.10(2).a3

Haydar Livatyali

{"title":"A Novel Force Control Strategy for Improved Surface Integrity in Low Plasticity Burnishing","authors":"Haydar Livatyali","doi":"10.21272/jes.2023.10(2).a3","DOIUrl":"https://doi.org/10.21272/jes.2023.10(2).a3","url":null,"abstract":"Ball burnishing is a cold work process where a hard ceramic or diamond ball rolls on a metal surface and flattens the roughness peaks under high local pressure. The small deformation created on the surface imposes compressive residual stresses and raises hardness in a shallow sub-surface layer, leading to improved fatigue, corrosion, and foreign object damage performances. Trial-and-error type experimental work to determine the optimum process parameters for a cold-forming process like ball burnishing for acceptable performance is costly. Therefore, the article aims to investigate the effects of various force control strategies in the double-sided low plasticity burnishing (LPB) process to find the effects on deformation and residual stresses on thin Ti6Al4V flat sheets. A 3D static-implicit finite element model was developed with an elastic-rigid plastic flow curve. Simulations were conducted to predict residual stresses and deformationі on the surface. As a result, it was proven that ball burnishing can produce a deterministically controlled surface. An increased vertical force produced higher deformation normal to the surface and, therefore, a deeper pool. As the ball proceeded further, a plowing effect developed such that when a 3.5–4.8 mm deep pool was formed (at a vertical force of 150 N), a peak of 2.8 mm was produced at the front end. Overall, the deformation on the surface and the residual stresses were directly interrelated. Parallel to the deformation on the surface, residual stresses on and beneath the surface also showed some variation. Nevertheless, the predicted residual stress variations were not big. They did not switch to the tensile mode in the burnished zone. Therefore, the whole sheet surface should be burnished to obtain all the compressive residual stresses.","PeriodicalId":31548,"journal":{"name":"Zhurnal inzhenernikh nauk","volume":"23 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":"135911510","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}

引用次数: 0