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INDONESIA
JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN
Published by Universitas Negeri Yogyakarta
ISSN : 25487590     EISSN : 25487590     DOI : -
Core Subject : Education, Social, Engineering,
Education Mechanical Engineering Social Sciences
Jurnal Dinamika Vokasional Teknik Mesin (JDVTM) is published by the Department of Mechanical Engineering Education, Faculty of Engineering, State University of Yogyakarta. The journal is published twice a year in April and October. Each publication contains articles comprising high quality theoretical and empirical original research papers, review papers, and literature reviews. The scope of study of this journal includes mechanical engineering education, technology and vocational education, learning and curriculum development, learning method development, and learning media. All of the fields study, particularly in mechanical engineering vocational and education. The articles submitted should be attended to the particular topics above.
Arjuna Subject : -
Articles 7 Documents
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Search results for , issue "Vol. 11 No. 1 (2026)" : 7 Documents clear
ERGO-MECHANICAL APPROACH OF DESIGNING TRUCK TIRE INSTALLATION TOOL FOR SMALL WORKSHOPS Susana, Gede Bawa; Aryadi, I Gusti Agung Ketut Chatur Adhi Wirya; Jefry, Hafiz
Jurnal Dinamika Vokasional Teknik Mesin Vol. 11 No. 1 (2026)
Publisher : Department of Mechanical Engineering Education

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Abstract

Manual truck tire installation can cause musculoskeletal disorders due to unnatural postures and high physical demands. This study aims to assess the prevalence of musculoskeletal complaints among truck tire installation workers and to design a truck tire installation aid based on an ergo-mechanical approach. The level of musculoskeletal complaints was measured using the Nordic Body Map questionnaire with a four-point Likert scale in five workers, before and after work. The measurement results showed an average musculoskeletal complaint score of 54.2 after work, placing it in the moderate-risk category and requiring corrective action. Based on these findings, a truck tire installation aid was designed using worker anthropometric data, employing a 5th-percentile approach to ensure the safety and comfort of workers with small body sizes. The body dimensions used include standing elbow height, palm length, knee height, foot length, and horizontal standing reach. The results of translating anthropometric data into technical designs indicate that the proposed assistive device has the potential to improve work posture, reduce physical load, and lower the risk of musculoskeletal disorders. Although this research remains limited to the conceptual design stage and lacks prototype testing, the results can serve as a basis for developing and evaluating ergonomic assistive devices in real work environments.
ANALYZING THE EFFECTS OF WATER, AIR, AND SALTWATER COOLANTS ON THE TENSILE STRENGTH & HARDNESS OF AISI 1045 STEEL WELDED WITH METAL INERT GAS Hariz Dedy Sayogi, Muhammad; Aldo, Jefri; Agustina, Lia; Made Susanto, I
Jurnal Dinamika Vokasional Teknik Mesin Vol. 11 No. 1 (2026)
Publisher : Department of Mechanical Engineering Education

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Abstract

This study aims to analyze the effect of cooling media variations (air, water, and salt water) on the mechanical properties of AISI 1045 medium carbon steel welded using the Metal Inert Gas (MIG) method. The experimental method was used with steel specimens in the form of plates which were then tested for tensile strength in accordance with the ASTM E8 standard and tested for hardness. The results of the study show that cooling with air produces the highest tensile strength (35.59 Kgf/mm²) due to the formation of ductile pearlite and ferrite microstructures. Cooling with water produced moderate tensile strength (34.42 Kgf/mm²), while cooling with salt water produced the lowest tensile strength (22.34 Kgf/mm²) due to the formation of hard but brittle martensite. Conversely, the highest hardness value was obtained with saltwater cooling (386.20 HV in the HAZ), followed by water, and the lowest with air. In general, slow cooling increases ductility and tensile strength, while rapid cooling increases hardness but decreases ductility. These findings emphasize the importance of selecting the appropriate cooling medium according to application requirements, whether the emphasis is on tensile strength or material hardness.
EXPERIMENTAL STUDY ON THE EFFECT OF PV TILT ANGLE ON MINI SOLAR POWER BANK PERFORMANCE Kolala, Putra Andi; Afisna, Lathifa Putri; Wibowo, Wuwuh Saminto; Putra, Aditya Septian; Carlo, Antonio; Pambayun, Fajar Bagas; Huda, Fajar Nur
Jurnal Dinamika Vokasional Teknik Mesin Vol. 11 No. 1 (2026)
Publisher : Department of Mechanical Engineering Education

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Abstract

Solar panels are devices designed to convert solar energy into electrical energy through the photovoltaic (PV) effect, offering a sustainable solution for portable power needs. This study investigates the effect of solar panel tilt angles on the performance of a mini solar cell power bank in Institut Teknologi Sumatera, South Lampung, Indonesia. A 2.5 W monocrystalline silicon panel was tested at tilt angles of 15°, 30°, and 45°. Data on current, voltage, temperature, and power were collected at 30-minute intervals from 09:00 to 15:00 WIB over three separate clear-sky measurement days. The results indicate that the 15° tilt angle produced the highest average current (38.39 mA), voltage (4.08 V), and power (0.162 W). The estimated charging time for a 3000 mAh battery was 93.77 hours (15°), 116.13 hours (30°), and 138.04 hours (45°). The 15° tilt is the optimal configuration for portable solar power banks in this tropical region.
GTAW WELDING REPAIR QUALITY ANALYSIS ON SPARGER HEADER WITH LIQUID PENETRANT AND LEAK TEST Hermawati, Devina; Fawaid, Moh
Jurnal Dinamika Vokasional Teknik Mesin Vol. 11 No. 1 (2026)
Publisher : Department of Mechanical Engineering Education

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Abstract

Damage to sparger headers, such as material thinning and leakage, can reduce system reliability and disrupt industrial operations. Repair welding using Gas Tungsten Arc Welding (GTAW) is commonly applied; however, its quality must be verified to ensure safe reuse. This study evaluates the quality of GTAW-based repair welding on a corrosion-damaged sparger header using Non-Destructive Testing (NDT), namely Liquid Penetrant Testing (LPT) for surface defect detection and leak testing for sealing performance under pressurized conditions. Unlike previous studies that focus on newly fabricated welds under laboratory conditions, this study evaluates repair welding performance on an actual industrial component affected by corrosion-induced wall thinning. The combination of surface inspection using LPT and functional validation through leak testing under real operating conditions provides a more comprehensive assessment of repair quality. Results show no surface indications in LPT and no leakage during testing at 1.2 kg/cm² for 37 minutes. These findings indicate that the repaired weld meets acceptance criteria and is suitable for reuse. The results provide a reliable basis for assessing repair welding quality in industrial components.
MULTIDISCIPLINARY APPROACH STRATEGIES IN ELECTROPNEUMATICS COURSE LEARNING IN THE METAVERSE ERA Romadin, Achmad; Muhammad Irfan, Andi; Anwar, Fahri Anwar; Hasim S, muhammad; Taufiq Arfah, muhammad
Jurnal Dinamika Vokasional Teknik Mesin Vol. 11 No. 1 (2026)
Publisher : Department of Mechanical Engineering Education

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Abstract

A multidisciplinary approach has become an important strategy in vocational education to prepare graduates who are adaptable to the demands of 21st-century industry. This study offers a novel contribution by developing a multidisciplinary vocational learning model that integrates Project-Based Learning (PjBL) and Contextual Teaching and Learning (CTL) within a metaverse-oriented learning environment. The model connects real industrial automation problems, collaborative project activities, contextual learning experiences, and digital simulation to enhance students’ technical competence, critical thinking, collaboration, creativity, and professional character. This article examines the implementation and effectiveness of the multidisciplinary strategy in the Electropneumatics course. The research employed a qualitative case study approach, with data collected through interviews, observations, and documentation. The findings indicate that the integration of PjBL and CTL provides meaningful learning experiences by linking theoretical concepts with real industrial applications and digital simulation environments relevant to the Metaverse era. This approach not only improves technical learning outcomes but also fosters responsibility, discipline, teamwork, adaptability, and problem-solving skills. However, its implementation faces several challenges, including human resource readiness, cross-disciplinary curriculum alignment, lecturer competence in digital learning design, and adequate access to digital infrastructure. Therefore, continuous evaluation and synergy among academia, industry, and government are needed to support sustainable implementation. Overall, this multidisciplinary learning model contributes to the development of innovative, contextual, and industry-relevant vocational education, particularly in preparing excellent workers in the field of industrial automation.  
EXPLORING THE CONTRIBUTION OF THE FOUR PILLARS OF PARTNERSHIP TO THE IMPLEMENTATION OF WORK-BASED LEARNING IN VOCATIONAL EDUCATION Fakhri, Ardani Ahsanul; Abdullah, BZ. Septeiyawan; Rusydi, Muhammad Ibnu
Jurnal Dinamika Vokasional Teknik Mesin Vol. 11 No. 1 (2026)
Publisher : Department of Mechanical Engineering Education

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Abstract

This study analyzes the influence of the four pillars of partnership on the success of WBL as well as the differences in perceptions between teachers, students, and industry in Tegal Regency. The method used in this study is quantitative with data analysis using multiple linear regression and one-way ANOVA. The results of the study show that the four pillars are simultaneously influential. Partially, Confidence (p = 0.002; Beta = 0.415) and Profit (p = 0.014; Beta = 0.310) is significant, while Need (p = 0.065) and Strength (p = 0.254) are not. ANOVA revealed significant differences in perceptions between groups (p = 0.008), with teachers being more optimistic than industry (mean difference = 4.200; p = 0.012). The results of the analysis show that the success of WBL is not enough to rely solely on MoUs or facilities, but is highly dependent on industry trust and mutual benefits. Schools need to build the character and safety of students' work and create a clear benefit-sharing scheme.
ANALYSIS OF MILD STEEL CORROSION RATE BASED ON VARIATIONS OF ELECTRODES AND CORROSION MEDIA IN SMAW WELDING Aldo, Jefri
Jurnal Dinamika Vokasional Teknik Mesin Vol. 11 No. 1 (2026)
Publisher : Department of Mechanical Engineering Education

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Abstract

This study aims to determine the effect of electrode variations on mild steel plates using variations in corrosive environments. The method used in this study is experimental. Data collection techniques are carried out by documenting workpieces that have been welded using variations of electrodes dipped in variations of corrosion media for 15 days and observed using a digital microscope with a magnification of 50X. The results of this study show that workpieces that have been welded SMAW using variations of electrodes E6010, E6013, E7018 and using corrosive solutions of seawater and rainwater to be able to see the results of the development of the corrosion rate that occurs in the workpiece, which experiences a slow corrosion rate is found in the E6013 electrode using rainwater due to the strong current in the place when welding gets good results, and it is difficult for the corrosion rate to occur. While the type of E6010 electrode immersed in seawater solution shows a very rapid corrosion rate compared to other electrodes. The initial weight of the workpiece is 215.77 grams, and after 15 days of immersion, the weight of the workpiece decreases to 213.88 grams, resulting in a weight loss of 1.89 grams.

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