The article presents the results of a comprehensive experimental study examining the influence of primary PET-G and secondary rPET-G on the structural formation, optical transparency, and overall quality of polymer samples produced through extrusion. Six experimental series were conducted with recycled material content ranging from 5% to 30%. The findings show that the key...
This research focused on the verification of selected geometric characteristics of the Yaskawa SDA 10F industrial robot using a Renishaw XL-80 laser interferometer through an experimental method based on the principles of the STN ISO 9283 standard. The theoretical part of the work includes the analysis of the standard and the selection of measurement methods, while the practical...
This article presents an energy analysis of the UH-60 Black Hawk helicopter main rotor at a constant speed of 258 RPM for two blade configurations: the base (S₀) and modified (S₂) ones. Using calculated data and CFD modeling results, a comparison of the thrust (Cₜ), power (Cₚ), and integral efficiency (FM) coefficients is performed. It is found that when switching from S₀ to S₂...
The presented work is devoted to a comprehensive analysis of the peculiarities of teaching engineering and computer graphics in higher education institutions of Ukraine under martial law. The relevance of the study is determined by significant changes in the organization of the educational process caused by military actions, the transition to distance and blended learning formats...
In laser thermal processing, welding, cladding, surface hardening, and laser bending, it is the temperature fields that determine the development of phase transformations, the material’s microstructure, and the formation of residual stresses and deformations. Proper design of these processes requires models capable of adequately reproducing the thermal behavior of metals. Modern...
Drilling of CFRP-titanium alloy stacks is a complex technological task due to significant differences in the physical, mechanical, and thermophysical properties of carbon fiber and titanium alloy. This article presents a review of modern scientific research describing the physics of the cutting process separately for each layer of the package and comprehensively for transient...
The low density of magnesium alloys promotes their adoption in the automotive, aerospace, medical, and electronics industries. Wider application of Mg requires the development of reliable joining methods. Vacuum diffusion welding is a promising process, as it makes it possible to avoid most of the defects characteristic of fusion welding. At the same time, scientific interest is...
A promising method of joining silicon with glass is the solid phase welding method that can be carried out in an air atmosphere, at low temperatures, using insignificant external compression forces and with the application of an electrostatic field of high voltage. The widespread use of the method limits a significant drawback – the instability of the quality indicators of welded...
The article presents an innovative technology for machining components aimed at increasing production efficiency and ensuring the rational use of tooling resources. A comparative analysis of conventional and improved technological schemes of turning operations for gray cast iron parts was carried out, identifying key factors that influence productivity and tool wear. During a...
Nickel-titanium (NiTi) alloys, commonly known as nitinol, occupy a special place among shape memory materials due to their unique combination of high strength, corrosion resistance, biocompatibility, and the ability to undergo reversible phase transformations. These properties make nitinol widely used in medical engineering (stents, orthodontic wires, implants), as well as in...
In today's mechanical engineering, especially in small and medium-sized enterprises, the quality and cost of products are important factors that are directly influenced by the quality and consistency of the engineering and technological documentation developed, as well as its compliance with current standards and normative documents. To assess the quality of engineering...
It has been established that modern die-cutting equipment has reached an advanced operational level. At the same time, it is classified as heavy-duty machinery due to the press overcoming significant technological resistances. A number of scientific publications related to the research topic have been analyzed. The emphasis is placed on the relevance of minimizing peak load...
Fuel efficiency of vehicles with internal combustion engines (ICE) is one of the key indicators of their operational characteristics, since fuel costs significantly affect the cost of transporting goods and passengers. Increasing the energy efficiency of motor vehicles (MVs) is an important and urgent task that allows you to reduce fuel consumption, reduce greenhouse gas...
The problem of developing an intelligent engine as a basis for integrating tools for automating service life cycle processes, models and methods for developing initiation and business analysis tools for a service life cycle support platform in information systems of providers is considered. The general approach to supporting processes at all stages of the service life cycle is...
This article describes the migration of software packages from the Robot Operating System 1 (ROS 1) environment to the new ROS2 architecture, using the JetAuto mobile platform as a case study. The work focuses on the practical migration procedure, identifies problems and their solutions. The jetauto_interfaces and jetauto_driver packages were sequentially migrated and...
Digital monitoring is a key tool in the development of precision agriculture, providing timely assessment of the state of agroecosystems and enabling spatially justified management of technological processes. Under conditions of increasing resource pressure, climate change, and variability of soil conditions, there is a need for a comprehensive analysis of parameters influencing...
The relevance of eco-oriented modular construction is constantly growing due to the aggravation of housing and environmental problems associated with military operations on the territory of Ukraine. At the same time, there are certain challenges limiting the widespread use of modular buildings in Ukraine, which are mainly associated with a high level of consumer skepticism...
A series of memory cards dedicated to Vasyl Slipak, a famous Ukrainian opera singer, volunteer, and participant in the Russo-Ukrainian War, has been created. These cards are designed to honor his life, work, and heroic journey, as well as to convey information about significant events and places related to his activities. The series of maps aims to combine biographical data, the...
The article presents the analysis of the rationality and economic efficiency of strengthening and major repairs of partially destroyed large-panel buildings in accordance with a certain category of damage due to dynamic and impact effects received as a result of hostilities, which is becoming one of the key engineering tasks, which has not only scientific but also great social...
In the conditions of intensive development of construction technologies and increasing requirements for energy efficiency and quality of production of building materials, in particular foam concrete, the task of improving the designs of mixing equipment is urgent. A significant part of the energy consumption of such equipment is the power required to drive the working body of...
The aim of this study is to test a model for the formation of conditional noospheric intelligence (CNI) based on data from academic staff of higher education institutions in Ukraine, using methods of mathematical and geoinformation modeling. CNI is considered a complex structure that includes administrative intelligence, integrated intelligence, and the qualification potential of...
The article highlights the conceptual, legal, and organizational aspects of forming sustainable land use in Ukraine under the current conditions of wartime challenges and the future reconstruction of the state. It emphasizes that the current legislative definition of “sustainable land use” is declarative and lacks clear technical parameters for evaluation, which complicates the...
Over the past three decades, the higher education system of Ukraine has undergone profound transformations shaped by both internal reforms and external challenges. These processes evolved alongside broader socio-economic shifts, global digitalization, European integration, and the disruptive impact of full-scale war. Within this dynamic context, geodesy and land management stand...
In the paper, the design of a winding machine for toroidal cores, developed to reduce the cost and improve the ergonomics of the machine in the process of its operation is considered. The main shortcomings of analogues are analyzed. Modifications are proposed, including the use of modern production methods to reduce the cost of the winding machine while maintaining quality...
Modern demands for energy efficiency and power density are stimulating the transition to quasi-resonant converters capable of minimizing switching losses. This article systematizes the limitations of both classical linear regulators and common nonlinear approaches to power switch control. To increase the energy efficiency of quasi-resonant converters, a hybrid control...