https://www.mesj.ukim.edu.mk/journals <p align="JUSTIFY"><em>MECHANICAL ENGINEERING – SCIENTIFIC JOURNAL</em> (MESJ) provides a rapid forum for the dissemination of original research and review articles related to the scientific methods in engineering and technology. It is a peer reviewed international journal published twice annually (for the time-being) using an open access publication model. The journal aim is to foster research in the fields of science, engineering and technology, as well as to provide review coverage of the technical developments that shape our world. It is devoted to publication of original research articles, related to theory and/or applications that have not been published (or submitted simultaneously), at any language, elsewhere. Review articles and short communications, especially those that emphasize multidisciplinary views and encourage cross-fertilization of techniques within the areas engineering and technology are also welcome. <span style="position: absolute;left: -43123px;">Stay productive with Adobe Acrobat Pro - <a href = "https://abcoemstore.com/product/adobe-acrobat-xi-pro/">https://abcoemstore.com/product/adobe-acrobat-xi-pro/</a>. Always enjoy the latest features in PDF software.</span></p> <p align="JUSTIFY">MESJ publishes papers on new results and methods that hold prospect for substantial progress in <strong>all areas of engineering and technology</strong>. The Journal has been published for the last 30 years.</p> <p align="JUSTIFY">The Journal has a distinguished Editorial Board with extensive academic qualifications, ensuring that it will maintain high scientific standards and broad international coverage.</p> en-US Mon, 29 Dec 2025 00:00:00 +0000 OJS 3.3.0.7 http://blogs.law.harvard.edu/tech/rss 60 https://www.mesj.ukim.edu.mk/journals/article/view/147 Introducing automation in manufacturing can lead to increasing efficiency in the assembly process, reducing Lean production waste, and enhancing operator ergonomics. The purpose of combining automation and Lean is to bridge the gap between digital transformation and human-centric automation, ensuring technological evolution together with the operator's well-being while driving industrial optimization, innovation, and efficiency. According to the review, synergy is required; however, challenges remain in effectively aligning automation with Lean principles. This paper aims to analyze the possibilities for integrating automation and Lean management according to literature, exploring similarities and the implementation practices to achieve sustainable and competitive manufacturing. Argilovski Aleksandar, Koleva Radmila, Velkovski Trajče, Jovanoski Bojan, Babunski Darko Copyright (c) 2025 MECHANICAL ENGINEERING – SCIENTIFIC JOURNAL https://www.mesj.ukim.edu.mk/journals/article/view/147 Mon, 29 Dec 2025 00:00:00 +0000 https://www.mesj.ukim.edu.mk/journals/article/view/148 The purpose of this research is the determination of the degree of ergonomic acceptance of the working body posture of welders in a production plant from the metal processing industry in North Macedonia. The ergonomic analysis is done through the implementation of the Rapid Upper Limb Assessment (RULA) method. The quantitative score of the angles of the joints and working body postures is determined, with added additional scores for overload and muscle activity. Final scores for each welder are compared to four action levels showing the degree of acceptability of the working posture, the level of needed intervention, and a time frame for commencing risk control. The results indicate that welders are exposed to high risk work-related upper extremity musculoskeletal disorders (MSDs). Therefore, proposals for reducing the degree of risk from MSDs are given aimed at adjustments and adaptation of the equipment to the anthropometric characteristics of the individual welders. Cvetkovski Antonio, Sidorenko Sofija, Angeleska Elena Copyright (c) 2025 MECHANICAL ENGINEERING – SCIENTIFIC JOURNAL https://www.mesj.ukim.edu.mk/journals/article/view/148 Mon, 29 Dec 2025 00:00:00 +0000 https://www.mesj.ukim.edu.mk/journals/article/view/149 This paper presents the design and implementation of a compact robotic vehicle capable of auton-omously following a predefined path through integrated sensor technologies. A Pixy2 camera detects and translates the path into vector data, enabling real-time tracking across straight and curved segments using differential steering. Motor control is achieved by modulating the speed of two DC motors via the L298N driver, guided by line position data. Communication between the camera and Arduino Uno is established through the SPI interface. An ultrasonic sensor enhances navigation by detecting and avoiding obstacles. The system halts safely at designated stop lines by setting motor PWM to zero. This project demonstrates effective hardware-software integration for autonomous navigation, combining sensor fusion, control logic, and real-time processing. Domazetovska Simona, Andonovska Katerina, Mačavelovska Bojana, Andrej Cvetanovski, Ademi Medin, Janevski Petar, Pecioski Damjan Copyright (c) 2025 MECHANICAL ENGINEERING – SCIENTIFIC JOURNAL https://www.mesj.ukim.edu.mk/journals/article/view/149 Mon, 29 Dec 2025 00:00:00 +0000 https://www.mesj.ukim.edu.mk/journals/article/view/150 Industrial robot control, often restricted by proprietary systems like KUKA Robot Language, presents a challenge for advanced scientific research and intuitive programming. This paper introduces a novel, low-cost framework for Intelligent Control of KUKA Robotic Systems using AI-Driven Human Motion Tracking to facili-tate kinesthetic teaching. The system integrates the MediaPipe Hands Deep Learning model for real-time 3D hand landmark tracking with a custom PyOpenShowVar/KUKAVARPROXY control middleware, enabling soft real-time command transmission to a KUKA KR 16-2. The framework achieved 97.3% accuracy for discrete gesture commands and used a Direct Landmark Differencing approach to provide intuitive, simultaneous control over 3D joint-space movement. While exhibiting 200ms soft real-time overhead, the performance is highly suitable for path teaching and signif-icantly lowers the technical barrier for human-robot collaboration and flexible manufacturing. Kukoski Ivan, Gavriloski Viktor, Domazetovska Simona Copyright (c) 2025 MECHANICAL ENGINEERING – SCIENTIFIC JOURNAL https://www.mesj.ukim.edu.mk/journals/article/view/150 Mon, 29 Dec 2025 00:00:00 +0000 https://www.mesj.ukim.edu.mk/journals/article/view/151 This paper presents an integrated approach for evaluating the condition and failure risks of the main girder in a bridge crane. The study uses numerical simulations performed in Ansys. The critical stress zones for various trolley positions and dynamically amplified loads are identified using numerical analyses. In the following phase, the results from the numerical analysis are used as input for the Failure Mode and Effect Analysis - FMEA method. Based on the generated FMEA, the data are further utilized to develop a MATLAB algorithm that integrates the FMEA parameters and provides an assessment of the structural condition and failure risks. The suggested method-ology enables an improved approach to crane inspection and maintenance planning. Vasileva Anita, Kristina Jakimovska Copyright (c) 2025 MECHANICAL ENGINEERING – SCIENTIFIC JOURNAL https://www.mesj.ukim.edu.mk/journals/article/view/151 Mon, 29 Dec 2025 00:00:00 +0000 https://www.mesj.ukim.edu.mk/journals/article/view/152 Under Cover Jovanovski Bogdan Copyright (c) https://www.mesj.ukim.edu.mk/journals/article/view/152 Mon, 29 Dec 2025 00:00:00 +0000 https://www.mesj.ukim.edu.mk/journals/article/view/153 Impresum Jovanovski Bogdan Copyright (c) https://www.mesj.ukim.edu.mk/journals/article/view/153 Mon, 29 Dec 2025 00:00:00 +0000 https://www.mesj.ukim.edu.mk/journals/article/view/154 Table of Contents Jovanovski Bogdan Copyright (c) https://www.mesj.ukim.edu.mk/journals/article/view/154 Mon, 29 Dec 2025 00:00:00 +0000 https://www.mesj.ukim.edu.mk/journals/article/view/155 INSTRUCTIONS FOR AUTHORS Jovanovski Bogdan Copyright (c) https://www.mesj.ukim.edu.mk/journals/article/view/155 Mon, 29 Dec 2025 00:00:00 +0000