卷 25, 编号 1 (2023)

In this article, studies have been carried out to determine the magnitude of residual stresses arising during incremental shaping of a truncated cone, depending on the angle of inclination of its formative. To assess the residual stresses the method of cutting rings was used, according to the results of which it was found that the rings, cut out along the height, manufactured conical parts, when cutting are closed. This indicates the formation of compressive circumferential stresses during incremental shaping. There is also an insignificant axial displacement of the ring ends after cutting rings, which indicates the presence of axial residual stresses, the value of which is negligibly small compared to the value of circumferential stresses. As the degree of deformation increases during incremental shaping (increasing the taper angle), the magnitude of residual stresses decreases.

In this study, the potential for technological development of enterprises in the petrochemical complex is considered. The main production assets of the enterprises of the petrochemical complex were considered as the main object. The purpose of this article is to establish the relationship that the main production assets are the basis for the technological development of the petrochemical complex. The main problems of using fixed production assets are presented. Based on the problems considered, the key directions for increasing the efficiency of using the fixed production assets of petrochemical enterprises are presented. The dynamics of the availability of fixed assets at the full book value and at the book value of commercial enterprises for three years - 2019-2021 is analyzed. The degree of depreciation of fixed assets of commercial organizations was also analyzed for the period from 2019 to 2021. It is noted in connection with which the depreciation of fixed assets was observed and why it decreased. The coefficient of renewal of fixed assets was considered both for the Russian Federation as a whole and for the manufacturing industry in comparable prices. As a result, it was concluded that the fixed production assets of enterprises are their integral part, the main source of income, and the competitiveness of enterprises in the petrochemical complex depends on the fixed production assets.

A digital dual compressor wheel assembly process has been developed to predict the angular rotations of the blade assembly rotating as it rotates. The calculated angles characterize the tension in the joints of the end flanges of the blades. At the input of a digital double sequence of data on geometry deviations with control of operations on parts. During the implementation, the random forest method was used, the study of which was carried out on a set of calculated experiments performed in the ANSYS environment using the element model of the assembled impeller. The experimental results show that the calculation error does not exceed 15 minutes of arc.

The methodology for optimizing the production of aircraft, technological systems and processes is proposed. The method of streamlining and systematizing the source data is shown when setting and solving the problem of distribution of production resources. The method of synthesis and analysis of the production environment as a discrete and non-abroad space is considered, within which you can distinguish relatively homogeneous local substructures, for the description of which you can build effective adequate mathematical models, propose methods of their formalized description, methods of optimization in the synthesis of specific production schemes. The concept of sets in his appendix to the processes of forming databases of boundary controlled variables on the optimal values of the output variables was introduced. The methodology for constructing and calculating the main target function of optimizing the PS, which includes and is determined by the structure and relationships of incoming subsystems with their characteristic local target functions.

The article presents the results of a cross-structural interaction study in modern organizations. The theoretical foundations and reasons for the between-department-barrier emergence are discussed in details. Particular attention is paid to the viewpoint of Dr. E. Deming on the problem of cross-structural interaction, as well as the system-statistical proposals how to eliminate this problem are given.

This article considers the problem of transmitting signal text messages in the onboard computer networks of an aircraft. The article provides a brief overview of promising areas in the design of modern avionics, such as integrated modular avionics and Avionics Full Duplex Ethernet. The text of the article provides a protocol that allows you to generate the text of the signal zone on the multifunctional indicator in the cockpit, as well as to transmit the encoded text using the Arinc 664 (AFDX) protocol. The use of this protocol makes it possible to transmit to the multifunctional indicator in the cockpit the zone of signal messages completely formed in the computing unit. The advantage of this approach is the absence of information fragmentation, and therefore an increase in the frequency of updating information on the indicator screen.

The efficiency of railway transport is directly related to the renewal of infrastructure, including communication devices responsible for ensuring a safe transportation process. For reliable operation of the railway complex, it is necessary to introduce the latest developments in the field of network technologies. To achieve such a goal, the relevant processes of train traffic systems should be automated. However, this is possible when working in the railway complex of specialists of the highest level of qualifications, the practical and professional skills of which are acquired in higher educational institutions. Therefore, the work considers such aspects as the need for the latest developments based on network technologies, the need for specialists in the field of packet switching, as well as the peculiarities of educating students as specialists in the field of telecommunications.

The purpose of this work was to create a configuration of a resource-saving system for handling used household and electronic equipment that implements the state of environmental safety of territories, the formation of a comfortable, safe, favorable environment for people's life, the protection of the population and territories from possible threats of man-made and natural emergencies. The main objectives of the conducted research are defined:collection, generalization, systematization of materials, composition of research results in the field of methods, methods, technologies for collecting, sorting, processing electronic scrap; comparative analysis of the component composition of electronic and household appliances, devices, installations, automation and measurement equipment that have completed their service life; system analysis of methods and technologies that ensure maximum extraction of useful components from electronic waste for their reuse as secondary raw materials in economic turnover; development of the configuration of the organizational and technical system and technological infrastructure of the entire cycle of waste management of electronic and electrical equipment, implementing ensuring the state of protection of people, the natural environment from the negative effects of hazardous technosphere objects, the favorable and comfortable living environment of citizens.The results of the conducted research can be used in the development and updating of territorial waste management schemes, territorial and sectoral schemes for planning waste processing infrastructure, industrial and technical complexes for collecting, accumulating, and processing these specific wastes.

The influence of lead, cadmium, nickel, zinc and iron in concentrations corresponding to MPC and 2 MPC on the properties of Heterosigma akashiwo microalgae exometabolites in relation to bacteria isolated from different areas of the Peter the Great Bay of the Sea of Japan was evaluated. The results obtained showed metal resistance in 8 bacteria out of 18 tested. Different effects of exometabolites of Heterosigma akashiwo cultivated on heavy metals (HM) against bacteria resistant to these substances were found. Stimulation of the growth of opportunistic bacteria Vibrio sp., Escherichia sp., Escherichia coli, Staphylococcus lentus, Enterococcus sp., Staphylococcus pasteuri by exometabolites was revealed. In several cases, a decrease in the number of Pseudomonas sp. bacteria was recorded, with the addition of metabolites of microalgae grown with cadmium, lead and nickel at 10 and 20 µg/l, for Bacillus sp. at 20 µg/l lead, 10 µg/l and 20 µg/l cadmium, and also at 50 and 100 µg/l of iron. As a result, cadmium, lead and iron had the greatest effect on the effect of exometabolites on bacteria.