Mechanical Engineering Technology Research Articles

Using Dual Learning Technologies to Prepare for a Demonstration Exam in Secondary Vocational Education

The article updates the problem of the need for highly qualified technicians and workers, without solving which it is impossible to further develop both the high-tech enterprises of the country in general and the regional economy in particular. This is confirmed by the analysis of the need for specialists. The article discusses the problem of preparing future technicians and highly qualified workers for a demonstration exam using dual training technologies in secondary vocational education. The purpose of the article is to identify and test a set of dual training technologies that contribute to effective preparation and successful passing of a demonstration exam, which provides simulation of real production conditions for technicians and highly qualified workers. The methodology for organizing training consists of implementing professional modules in in-demand specialties on the territory of a partner enterprise with a schedule of individual training at the college. Using the method of pedagogical experiment, the developed proposals were tested and their effectiveness was tested using the example of training students of the specialty 02/15/08 Mechanical Engineering Technology in the competencies “Milling work on CNC machines” and “Turning work on CNC machines.” Based on the results of the experimental work, the conclusion is made about the positive dynamics of completing the tasks of the demonstration exam in the experimental group, which meet the requirements of employers of partner enterprises in the real sector of the economy.

Librarian Perspectives on Technical Standards at Academic Institutions with Engineering Technology Programs

Technical standards are resources that are important for engineering and engineering technology students due to ABET accreditation requirements and future professional use of the documents. Previous studies have surveyed librarians at Association of Research Libraries (ARL) institutions with engineering programs and librarians at universities with top-ranked engineering programs about standards. This study fills a gap by focusing on librarians at institutions with engineering technology programs. We surveyed 34 academic librarians at institutions with four-year bachelor programs in the disciplines of mechanical engineering technology or electrical and electronics engineering technology to learn about standards access and challenges at their libraries, standards education for students, and librarians’ standards-related professional development experiences and needs. Key findings include: standards access and standards education efforts are skewed towards larger institutions; librarians encounter significant cost challenges in providing standards access; few librarians receive education about standards until moving into their careers; and there is a need for self-paced librarian training materials focused on standards. Further education for librarians about standards and increased standards access has the potential to have a significant impact on many students, given the reach of librarians in their liaison roles.

Review of Power Supply and Distribution Construction Technology for Highway Electromechanical Engineering

In recent years, China has made significant progress in the construction of highways, resulting in an improvedhighway network that has provided robust support for economic and social development. However, the rapid expansion of highway construction, power supply, and distribution has led to several challenges in mechanical and electrical engineering technology. Ensuring the safe, stable, and cost-effective operation of the power supply and distribution system to meet the diverse requirements of highway operations has become a pressing issue. This article takes an example of a highway electromechanical engineering power supply and distribution construction project to provide insight into the construction process of highway electromechanical engineering power supply and distribution technology.

Сравнительный анализ качества научных журналов технического университета и критерии их улучшения

The paper presents the results of a comparative analysis of calculating the indicators of scientific journals at Bryansk State Technical University (BSTU) in the fields of technology according to the nomenclature list of the Higher Attestation Commission of the Russian Federation based on the integral rating of the Science Index information and analytical system. 
 Analising publication activity and disagreements of the expert community in ranking journals in economic specialties is carried out. 
 The paper identifies the directions for further improving the quality of BSTU scientific journals in technical specialties, namely: Science-Intensive Technologies in Mechanical Engineering, Transport Engineering, Automation and Modelling in Design and Management and Ergodesign based on their expert assessments. It is shown that the priority criteria for expert evaluation are the following: academic contribution to the field of knowledge, the quality of articles and their compliance with the subject area of the journal, the policy of journals regarding the reviewing and geographical diversity of authors and members of the editorial board and editorial staff of the journal. 
 It is proposed that in addition to the integral Science Index rating, which is a point indicator, the relevance and novelty of published journal articles is associated with analysing altmerics and visualising data.

Design and Development of a Screw Jack: An Input Repair Tool for Light Vehicles

This study introduces an innovative investigation into the development and utilization of a specially designed jack screw tailored for lifting lightweight objects. While screw jacks are well-established for their efficacy in mechanical lifting applications, this research aims to broaden their adaptability by specifically addressing the unique demands of lifting lighter loads. The exploration encompasses a thorough examination of the design principles, materials, and operational facets associated with the proposed screw jack innovation. The primary impetus behind this research is to fill an existing void in lifting solutions that are customized to the requirements of tasks involving light objects. By delving into the intricacies of screw jack design, the study seeks to improve the efficiency and safety of lifting operations in diverse contexts, such as small-scale workshops, where precision and controlled lifting of lighter loads are crucial. Anticipated outcomes of this study include the development of a specialized screw jack prototype that provides a dependable, cost-effective, and ergonomic solution for lifting light objects. The research findings aim to contribute valuable insights to the fields of mechanical engineering and lifting technology, laying the groundwork for further advancements in the design and application of lifting devices tailored to specific load requirements. Based on the study's findings, the following conclusions were drawn: the device effectively raises objects with a 2-ton capacity, its safety has been successfully verified, and the materials used are locally available. However, it is essential to note that this design is limited to light loads. Therefore, in applications requiring a screw-type mechanical jack for heavy loads, a different design is necessary. Recommendations include adherence to the device's capacity, implementation of safety measures to prevent accidents during operation, and potential modifications for further enhancement in future research endeavors.

Discussion on the Application of Intelligent Technology in Electrical and Mechanical Engineering

With the continuous development of technology, intelligent technology is gradually becoming the focus of promoting social development and has been widely applied in various industries. In electrical and mechanical engineering such as construction, transportation, and industry, intelligent technology has also played a very important role. Due to the continuous development of intelligent technology and electrical and mechanical engineering, it is of great practical significance to deeply explore and analyze the application of intelligent technology in electrical and mechanical engineering. This article first briefly introduces the current development status of intelligent technology, and then focuses on a comprehensive discussion of the application of intelligent technology in electrical and mechanical engineering. I hope that this study can provide some reference and inspiration for relevant workers.

Review on Sisal and E Glass Fiber Composites for Roof Tiles

Composite materials have emerged as a pivotal technology in mechanical and civil engineering, with matrix and reinforcement serving as fundamental components. This dynamic interplay involves one element as the foundational material and the other as an augmenting agent, unified through epoxy resin as a bonding agent. This study focuses on a comprehensive review of hybrid composites, specifically employing sisal and E Glass fiber, for roofing tile applications. Rigorous examination of various articles from diverse journals informs the material characterization process, involving meticulous sample preparation and testing. Beyond sisal and E Glass composites, the literature also explores substitute materials, broadening the scope of potential applications. Emphasizing environmental consciousness, this research aligns with the green materials paradigm, presenting eco-friendly and sustainable solutions within the prevailing environmental context. By delving into alternative composites and their potential benefits, this work contributes to the ongoing discourse on advancing materials science for environmentally responsible applications in the fields of mechanical and civil engineering.

RESEARCH OF THE VIBRATORY FORMATION OF THE COMPASSION OF POWDER MATERIALS BY HYDRO-IMPULSE LOADING

Modern trends in the field of mechanical engineering require constant improvement of production through the introduction of new methods and means aimed at increasing the reliability of parts and the overall quality of products, while reducing the costs of their production. The reliability of machine parts is determined by various factors, such as strength, resistance to wear, vibration and high temperatures. In order to achieve these reliability criteria, various methods are widely used, such as material selection and the use of technologies aimed at increasing strength and wear resistance, such as heat treatment, surface treatment of parts by various physical methods, and stress reduction. One of the methods of increasing the fatigue strength and wear resistance of parts includes the use of surface plating on the working surfaces of parts in general and in areas of stress concentration in particular. The mentioned article carefully analyzes the process of forming metal powders, considering it as a technological operation that leads to the creation of powder forms. A detailed analysis and comparison of the equipment used for vibropress molding of blanks from powder materials is also carried out. The article describes the main technological processes of vibration and shock impact on materials. In addition, the article offers schemes and methods of implementation of vibration molding of powder materials, as well as analysis and classification of these processes according to their characteristics of vibration and vibration-impact modes. This allows you to understand the effectiveness of various methods and their applicability in specific production conditions, contributing to the further development and improvement of modern technologies in mechanical engineering.

METHODOLOGY FOR TECHNOLOGICAL DESIGN OF THE PARTS RECOVERY PROCESS

The authors of the paper, each with their own experience of scientific activity and accumulated knowledge in the field of parts recovery and mechanical engineering technology, set out to generalise them and develop a methodology for technological design of the process of recovery of worn parts from the standpoint of a systematic approach. For the stages of the life cycle of mechanical engineering products that solve the problem of extending their service life by repairing and restoring worn parts, a general scheme and structure of information support for technological design using methods of improving the quality of the surface layer have been developed. A scheme for specifying the life cycle of parts by repairing and restoring them is proposed. The process of formation of quality indicators of worn parts is presented in the form of a system that allows to give a multilevel assessment of the quality of restoration of a part.

REVERSE ENGINEERING AND IMPLEMENTATION OF MODERN METHODS AND MEANS OF CONTROL OPERATIONS

The authors, each with their own scientific and practical experience and accumulated knowledge of mechanical engineering technology, set themselves the goal of summarizing and evaluating new opportunities and alternatives to existing approaches to the design of technological processes of manufacturing or restoring parts in the conditions of reverse engineering. Modern technical means are considered, which are necessary for performing the stages of reverse engineering and ensure the quality of production and reduce the complexity of technological design.

ОПРЕДЕЛЕНИЕ ДИАПАЗОНА ЭФФЕКТИВНЫХ РЕЖИМОВ ШЛИФОВАНИЯ И МАТЕРИАЛОВ ШЛИФОВАЛЬНОГО КРУГА ДЛЯ ОБРАБОТКИ СТАЛИ 95Х18

The development of a mathematical model for the grinding treatment of steel 95X18 with recommended grinding wheels, namely a wheel of silicon carbide green, el’bor wheel, diamond wheel is discussed. When studying the influence of grinding modes and grinding wheel materials during the processing of 95X18 steel on the roughness of the treated surface, a multifactorial experiment was carried out. The roughness of the treated surface was evaluated according to the Ra parameter, using a portable profilometer of the MarSurf PS1 model. Based on the data obtained, it is possible to choose the optimal cutting mode based on the required roughness of the treated surface. It has been established that in order to achieve a stable quality of the treated surface Ra 0.63, it is necessary to use a diamond wheel at cutting speeds from 10 to 25 m / s and low feed rates. The obtained regression equations showed that an increase in the cutting speed or a decrease in the feed led to a decrease in the roughness of the treated surfaces. The main provisions of the metal cutting technology and the mechanical engineering technology were used.

Transparent Component Defect Detection Method Based on Improved YOLOv7 Algorithm

Transparent components such as glass and fiber-reinforced plastics are widely used in engineering practice, which are prone to generate defects, and change its surface and internal structure, and cause great risks to the performance and stability of products. To solve the above problems, firstly, we studied the defect detection of transparent components, proposed an improved YOLOv7 (You Only Look Once V7) algorithm, replaced the Loss function CIoU (Complete-Intersection over Union) of the network model with Wise-IoU (Wise-Integration Over Union), and raised its convergence performance. Secondly, Global Attention Mechanism (GAM) is embedded in the backbone, and a dynamic target head frame is used in the output layer to generate the standard head frame and the attention function, improving the network’s attention to micro defects and ensuring the detection accuracy of micro defects. Thirdly, an intelligent defect detection platform was designed by combining mechanical engineering, visual perception, information processing and other technologies, and 150 rounds of comparative ablation experiments were conducted on typical transparent components. The improved algorithm has raised 2.6% in Mean Average Precision (MAP) value compared to the original algorithm. The improved model has better detection performance for micro defects and higher recognition accuracy. It can effectively screen out the location and category of defects, and eliminate defective components, which is consistent with the actual engineering situation. It satisfies the actual needs of product quality testing in the production process and provides reference experience for the industrial use of defect detection methods.

Анализ применения различных типов 3D-принтеров в машиностроении

Relevance. The article discusses the main types of 3D-printers that can be used in mechanical engineering. The analysis of the basic principles of operation, as well as the advantages, disadvantages and features of the use of these types of devices. In the end, the author will consider the possibilities of future research in the field of additive technologies. The purpose of the research. To conduct an in-depth analysis of the use of 3D-printing in mechanical engineering. The purpose of the article is to study the application, advantages and limitations of various types of 3D-printers used in mechanical engineering. It also evaluates factors that influence the choice of printer, such as material compatibility, resolution, print volume and print speed. The study highlights the problems faced when integrating 3D-printing into mechanical engineering. The article concludes with a summary of the main conclusions, a discussion of the implications for management and decision-making, as well as the definition of future research opportunities. The objectives of the study are to identify existing problems in the use of additive technologies in mechanical engineering and to consider possible applications in the future. The results of the study. The study provides an overview of 3D-printing in mechanical engineering, its importance and application. It discusses various types of 3D-printers, their features and capabilities. The article analyzes the use of 3D-printers in mechanical engineering, assesses the advantages, limitations and impact on product quality, production time and economic efficiency. Factors influencing the choice of printer are investigated, such as compatibility of materials and requirements, resolution, print volume, print speed, post-processing and scalability requirements. The study also identifies challenges and future directions of 3D-printing integration, including potential advances in printing technology. In conclusion, the main conclusions are presented, their importance for decision-making in mechanical engineering and recommendations for improving the printer selection process. Future research opportunities are also highlighted.

Patent citations and knowledge spillovers: an empirical analysis of Indian patents

ABSTRACT This study uses patent citations data to measure knowledge spillovers at three levels: inventor, firm, and technology. We have collected Indian patents data granted by the United States Patent and Trademark Office (USPTO) and their backward citations from 1990 to 2019. To conduct our empirical analysis, we apply the Negative Binomial (NB) and Generalised Negative Binomial Model (GNBM). To account for other factors influencing knowledge spillovers, we control for patent inventor size, applicant size, patent scope, and claims. Our findings show that US-origin inventors outperform Indian and European inventors in terms of knowledge spillover from patent citations. Similarly, US firms show better knowledge spillover performance than Indian firms, foreign firms, Indian research centres, and other ownership categories. Lastly, the knowledge spillovers in chemistry technology patents are high compared to mechanical engineering, electrical engineering, and other technology categories from existing patent stock. The emperical finding of our study suggests that the government can promote knowledge spillovers from patent citations and advance India towards a knowledge-based economy by attracting foreign inventors and firms in the country, investing in domestic R&D, and developing human capital.

Calculation of multi-blade rotary-friction tool shaft for strength

The leading place in the technology of modern mechanical engineering production is occupied by cutting processes. In many branches of mechanical engineering, especially in mass production, their labor and production costs reach 40-60% of the total costs of metalworking. Nowadays, no more or less complex machine can be made without the use of cutting tools. Thus, we can rightfully assert that cutting machining has retained its predominant influence on the development of mechanical engineering technology and its importance will be steadily increasing in the future, largely based on the use of fundamentally new machining methods. And the latter can be rightly attributed to the so-called rotary cutting. The authors have developed a design of a special multi-blade rotary-friction tool for machining cylindrical surfaces of parts made of hard-to-machine materials. This paper presents the results of the calculation of the most loaded node of the multi-blade rotary-friction tool of the part “shaft”. Calculation of the bending strength of the shaft has been performed. The results of the calculation have been checked through the program Apm Winmachine which has confirmed their correctness. This research is funded by the Ministry of Science and Higher Education of the Republic of Kazakhstan (Grant No. AP14972884).

Trends and Impact of Sustainable Energy Technologies in Mechanical Engineering: A Bibliometric Study

Trends and Impact of Sustainable Energy Technologies in Mechanical Engineering: A Bibliometric Study

WAYS OF ENSURING THE COMPETITIVENESS OF SMALL AND MEDIUM-SIZED MACHINE-BUILDING ENTERPRISES OF UKRAINE IN THE EUROPEAN INTEGRATION CONTEXT

The issues of the modern direction of sustainable development of the competitive machine-building industry in Europe and the possibility of transforming the experience of developed European countries into a strategy for the development of small and medium-sized machine-building enterprises in Ukraine are considered. It was noted that it is SMEs that are the basis for the development of the EU economy, and the rationale for this fact was given. It was emphasized that the engineering industry is the largest sector of the EU economy in terms of the number of enterprises, employment of workers, production and value added. It is assumed that it is the development of SMEs in the machine-building industry of Ukraine that will become a significant contribution to the accelerated restoration of the social and economic well-being of Ukrainian society during the period of the country's recovery. A comparative analysis of the numerical number of machine-building enterprises of various sizes is given both in the developed countries of Europe and in Ukraine. The need for the development and implementation of digital services in the machine-building industry of Ukraine, in accordance with the concept of Industry 4.0, was emphasized at all stages of the product life cycle to ensure the flexibility and competitiveness of SMEs. The barriers to the implementation of the 4.0 concept for the sustainable development of small and medium-sized businesses in the world are analyzed, and individual barriers are identified that today pose a threat to the development of the Ministry of Railways of Ukraine as a whole. It is noted that one of the biggest problems in the world development of the Ministry of Railways as a whole is the problem of training (retraining) a new generation of qualified personnel. It is concluded that in order to develop competitive SMEs in Ukraine in the context of its integration into the EU, it is necessary to pay attention to the training of highly qualified technical personnel who, on the one hand, can play the role of system integrators and implementers of Industry 4.0 tasks, and, on the other hand, be able to solve the associated problems of mechanical engineering technology from idea to product manufacturing using digital services based on a single digital core. The scientific value of the work lies in the substantiation of ways to ensure the competitiveness of SMEs based on the foundations of the symbiosis of education, science and manufacture on the basis of a single digital core.

ДИСКРЕТНАЯ ВИЗУАЛИЗАЦИЯ В РЕШЕНИИ УЧЕБНО-ИССЛЕДОВАТЕЛЬСКИХ ЗАДАЧ ТЕХНОЛОГИИ МАШИНОСТРОЕНИЯ

The purpose of the article is to present discrete visualization as a means of solving educational and research problems of mechanical engineering technology. Discrete visualization is considered as a method of dividing the studied machining process into sequential time fragments, followed by educational observation, fixation of the fragment by means of mobile video and interpolation of the obtained point data. As an example, an educational study of the influence of thermal phenomena during cutting on the processing accuracy is considered. The conclusion is made about the possibility of using the technology of discrete visualization and mobile video for laboratory work, research in student scientific societies, the development of video courses and virtual laboratory work for conditions of distance, correspondence and hybrid learning, as well as various kinds of experimental and grant activities of future technologists in universities and colleges.

ABOUT THE WORK OF THE TECHNOLOGICAL SCIENTIFIC SCHOOL OF THE RYBINSK STATE AVIATION TECHNICAL UNIVERSITY NAMED AFTER P. A. SOLOVYOV IN THE FIELD OF HIGH-TECH AND PRODUCTION TECHNOLOGIES

The article presents the results of research carried out by the author independently, as well as jointly with his students (9 doctors and 60 candidates of technical sciences). Recommendations on technological support of the accuracy of processing and quality of the surface layer of machine parts are proposed, taking into account the technological conditions of processing (cutting mode, properties of the processed and tool materials, geometry of the cutting part of the tool), as well as indicators of the operational properties of machine parts and products in general, (fatigue strength, contact stiffness of the surfaces of parts and their wear resistance, corrosion resistance, as well as the strength of the press joints). The directions of automation of manufacturing technology and assembly of products, as well as the organization of production (calculation of the number of parts in a batch, justification of the choice of equipment, organization of joint parallel work of the designer and technologist, etc.), problematic issues of repair of high-tech products, including aviation gas turbine engines, and quality management of products and processes are proposed. The article is dedicated to the 40th anniversary of the Department of “Technology of Aircraft Engines and General Mechanical Engineering”, Rybinsk State Aviation Technical University named after P. A. Solovyov.

Preface

The 14th Five-Year Plan clearly points out that we should adhere to the core position of innovation in the overall situation of modernization, regard scientific and technological self-reliance and self-improvement as the strategic support for national development. At present, from a global perspective, science and technology have increasingly become the main force to promote economic and social development, and innovation is the trend of the times. In the fierce international competition, only innovators advance, only innovators are strong, and only innovators win.However, the foundation of China’s scientific and technological innovation is not yet solid, there is still a significant gap in the level of innovation, and in some fields the gap has not narrowed, but has a tendency to expand. Therefore, improving innovation capabilities and creating an innovation ecology are the top priorities for building an innovative country and a world science and technology power.The International Conference on Mechanical Engineering and Automation (MEA 2022), as a sub-venue of the 4th International Conference on Scientific and Technological Innovation, was held in Chongqing, China on December 9th to 11th, 2022 via virtual form.MEA 2022 focused on the latest research and technology of Mechanical Engineering and Automation to discuss the innovation and development in these fields, and to create a forum for students, scholars, engineers, participants to give reports, share ideas as well as get new advice and insights from each other. It brought together about 150 participants. Many renowned professors delivered dramatic keynote speeches during the conference. One of them, Chunbo Xiu, a Professor from Tiangong University, China, shared a report on Design and Circuit Implementations of Memristor Hyperchaotic System. To enhance the order and Kolmogorov entropy of the memristive hyperchaotic system and improve the realizability of the circuit, a memristive hyperchaotic system that consists of two flux-controlled memristors and one charge-controlled memristor was designed. Combined with Lyapunov exponential spectrum, phase trajectory diagram and bifurcation diagram, dynamic characteristics of the system were analyzed, and the effects of system control parameters and initial state on the system dynamic behavior were explored.This volume covers topics on all fields of research related to Mechanical Engineering and Automation, including Mechatronics, Intelligent Control, Vehicle Engineering, Detection and Sensing Technology, Intelligent Optimization Algorithms, etc., increasing the number of scientific publications for science and technology innovation in related fields.We would like to thank all the participants in the International Conference on Mechanical Engineering and Automation. We would also like to thank the Conference Chairs, all the Technical Program Committee and Organizing Committee members, for the work and preparation they put in to organize this event. Finally, our special acknowledgements go to the Journal of Physics: Conference Series, for the endeavor of all its colleagues in publishing this paper volume.The Committee of MEA 2022List of Committee Member is available in this pdf.