cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
A. Jannifar
Contact Email
polimesin@pnl.ac.id
Phone
+628126930456
Journal Mail Official
polimesin@pnl.ac.id
Editorial Address
Politeknik Negeri Lhokseumawe Jl. Banda Aceh-Medan Km 280 Buketrata, Lhokseumawe, 24301, Aceh, Indonesia
Location
Kota lhokseumawe,
Aceh
INDONESIA
Jurnal Polimesin
Published by Politeknik Negeri Lhokseumawe
ISSN : 16935462     EISSN : 25491199     DOI : http://dx.doi.org/10.30811/jpl
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering
Polimesin mostly publishes studies in the core areas of mechanical engineering, such as energy conversion, machine and mechanism design, and manufacturing technology. As science and technology develop rapidly in combination with other disciplines such as electrical, Polimesin also adapts to new facts by accepting manuscripts in mechatronics. In Biomechanics, Mechanical study in musculoskeletal and bio-tissue has been widely recognized to help better life quality for disabled people and physical rehabilitation work. Such a wide range of Polimesin could be published, but it still has criteria to apply mechanical systems and principles. Exceeding the limitation has been a common reason for rejection by those outside the scope. Using chemical principles more than mechanical ones in material engineering has been a common reason for rejection after submission. Excessive exploration of the management within the discipline of Industrial Engineering in the manufacturing technology scope is also unacceptable. The sub-scope biomechanics that focuses on ergonomics and does not study movement involving applied force on the bio-tissue is also not suitable for submission.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 503 Documents
 46   47   48   49   50 
Internet of things for predictive maintenance optimization in SCADA-based industrial automation systems Yurika, Yurika
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.7220

Abstract

The rapid advancement of digital technologies has significantly influenced industrial automation, particularly with the integration of the Internet of Things (IoT) into Supervisory Control and Data Acquisition (SCADA) systems. SCADA systems play a critical role in monitoring and controlling industrial operations, such as manufacturing, energy distribution, and water management. However, managing large-scale operations requires efficient maintenance strategies, and predictive maintenance has emerged as a solution to anticipate equipment failures through real-time data. This research aims to explore the integration of IoT into SCADA systems to optimize predictive maintenance. The study uses a qualitative literature review approach to analyze current practices and challenges in implementing IoT-based predictive maintenance in industrial automation. The findings indicate that IoT integration significantly enhances SCADA systems by enabling real-time monitoring and predictive analytics, leading to reduced operational costs, improved efficiency, and extended equipment lifespan. However, challenges related to data security, interoperability, and infrastructure remain significant. The results of this study provide insights into the effectiveness and potential of IoT in predictive maintenance optimization for SCADA-based industrial systems.
Design and implementation of a pulley locking tool for air fan cooling system to enhance maintenance safety at company XYZ LNG Mufarida, Nely Ana; Wibowo, Moch. Arif; Muarifin, Muarifin
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.6968

Abstract

This study addressed a critical safety and efficiency challenge in the maintenance of air fan cooling systems at company XYZ LNG, where technicians traditionally relied on unsafe manual methods, using bare hands and a wooden block to stop rotating pulleys. These practices, observed over a decade of operations, were identified as a leading cause of near-miss incidents, exposing operators to crush injuries, entanglement, and amputations. Motivated by the need for a safer, engineered solution, this research designed, fabricated, and implemented a specialized pulley locking tool. Developed through a structured engineering design process, the tool prevents direct human contact with moving components while aligning with modern safety management principles and human factors engineering. Field trials demonstrated a reduction in braking time from 20–30 minutes to only 4 minutes, along with significant ergonomic and psychological benefits reported by operators. The tool not only improved efficiency but also strengthened confidence in maintenance procedures. This work represents a practical intervention that transforms safety theory into application, providing a replicable model for other LNG facilities and industries with rotating equipment. The results highlight how engineered tools can simultaneously mitigate risks and improve productivity in high-risk environments.
Improvement of mechanical properties of aluminium matrix composites through addition of alumina by stir casting method Nur Kholis; Sri Mulyo Bondan Respati; Evan Chahya Kurniawan
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.7376

Abstract

Aluminum is a material widely used in various industries. Aluminum has superior properties, one of which is corrosion resistance and good formability. However, one of the disadvantages of aluminum is that it has relatively low strength compared to other materials. Therefore, this study aims to determine the effect of adding various alumina to aluminum metal casting using the stir casting method on physical and mechanical properties. In this research, aluminum waste was used as the main matrix, and alumina powder (Al2O3) was used as reinforcing particles with weight fractions of 15%, 20%, and 25%. The material was melted at a temperature of 800 °C and a stirring speed of 500 Rpm for 5 minutes. Macro and micro observations were conducted using an optical metallography instrument. Mechanical testing included hardness testing using a Rockwell Hardness scale B instrument and tensile testing using a Universal Testing Machine. The test results showed several defects, including porosity, shrinkage, air holes, misruns, flash, and rough surfaces. Porosity and air pockets are usually caused by gas (especially hydrogen in aluminum) that is trapped during cooling due to insufficiently dry moulds or poor ventilation. The microstructure results show that Al2O3 agglomeration is highest at a 25% addition, which occurs because the stirring speed of 500 RPM is not sufficient to evenly distribute the Al2O3 particles. The highest hardness value is still found in the raw material (without reinforcement) at 73.33 HRB, while the material with the highest Al₂O₃ reinforcement at 25% addition has a hardness of 43 HRB. The highest tensile strength value was observed at the 25% alumina reinforcement parameter, with a value of 135.35 HRB, and the lowest at the 15% reinforcement addition, with a value of 128.64. The decrease in both hardness and tensile strength values compared to the raw material is attributed to alumina agglomeration.
Performance analysis of a single-blade archimedes screw turbine for low-head micro hydro applications Maulana, Muhammad Ilham; Syuhada, Ahmad; Yusmanizar, Yusmanizar; Asyqar, Muhammad Aufa
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.7182

Abstract

The need for efficient micro-hydro power generation systems for low head locations and the challenges of electrification in remote areas are increasing. The Archimedes Screw Turbine (AST) offers a simple and environmentally friendly technological solution; however, experimental studies on single-blade configurations with heads below 1 meter are limited. This study aims to evaluate the performance of a single-blade AST turbine through experimental testing at varying heads (0.7-1.0 meters) and flow rates (106-1035 L/min). The analyzed parameters include torque, mechanical power, and turbine efficiency, with the application of the Taguchi method for optimization of experimental design and reduction of the number of tests. Results show that flow discharge has a dominant influence on turbine performance compared to head, with the maximum power of 115.89 W and the highest efficiency reaching 68.72% under the condition of 1 meter head and 1035 L/min discharge. This study confirms that the single-blade AST turbine can function optimally at low head conditions and is worthy of further development for small-scale renewable energy systems in irrigation canals and other shallow flow sources.
Development of a self-driving RC car with lane-keeping system using a pure pursuit controller Rahman, Aulia; Alhamdi, Muhammad Jurej; Muchtar, Kahlil; Nurdin, Yudha; Roslidar, Roslidar; Razali, Safrizal; Effendi, Riki
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.6664

Abstract

The development of autonomous vehicles is crucial for enhancing driving safety, comfort, and efficiency. This research presents the design of a self-driving Remote Controlled (RC) car at a 1:10 scale, equipped with a lane-keeping system and a pure pursuit controller. The primary objective is to evaluate the effectiveness of integrating computer vision techniques with trajectory tracking control to maintain lane stability. Lane detection was achieved using a sliding windows algorithm, while polynomial fitting estimated the lane centerline. A stereo camera provided spatial perception, capturing images that were processed to determine the steering angle needed to minimize deviation between the lookahead point and the viewpoint of the vehicle. Experimental results show that the system-maintained lane position with minimal deviation, achieving an average steering angle of 90.44° on straight paths, 65.4° on right turns, and 113.1° on left turns. These results demonstrate the feasibility of combining vision-based lane detection with a pure pursuit controller to improve path-tracking accuracy and stability in autonomous vehicles.
Optimization of turbocharger performance on MV magnanimous through planned maintenance under the total productive maintenance (TPM) framework Sarifuddin Sarifuddin; Zulkani Sinaga
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.7251

Abstract

The turbocharger is a critical component of marine diesel engines, playing a vital role in enhancing air intake pressure and combustion efficiency. This study aims to evaluate the performance degradation of the turbocharger installed on the main engine of Vessel Magnanimous and to implement a structured maintenance strategy to restore its functionality. The research adopts a field-based Research and Development (RD) approach over a 14-month marine engineering practice period. Primary data were obtained through direct observation, operational logbooks, and technical inspections before and after the overhaul and air filter cleaning procedures. The results show a significant performance recovery: exhaust gas temperature increased from 440/400°C to 450/420°C, scavenge air pressure rose from 0.18 MPa to 0.27 MPa, and turbo blower speed returned to 25000 rpm. These improvements reflect the effectiveness of planned maintenance, a core pillar of the Total Productive Maintenance (TPM) framework. Moreover, the restored turbocharger performance contributed to improved combustion efficiency and system reliability, supporting the vessel’s operational productivity. The study concludes that integrating technical repair with TPM-based maintenance can enhance the overall effectiveness of marine engine systems.
Low-cost modular remote-control system for two-wheel hand tractors: design and performance evaluation using fly sky fs-i6 Rizky Tirta Adhiguna; Syifa Robbani; Amin Rejo
Jurnal Polimesin Vol 23, No 4 (2025): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i4.7013

Abstract

This research designed and developed a modular remote-control system for two-wheel hand tractors using the Fly Sky FS-i6 transmitter as a low-cost and responsive alternative to existing automation solutions. The primary objective is to improve operational efficiency and operator comfort while maintaining investment costs suitable for Indonesian smallholder farming. The total cost of system components (DC motors, servo motors, relays, solenoids, and receivers) was approximately USD 210, which is significantly lower than comparable IoT- or GPS-based automation kits (USD 600–1,000). Modifications were made to the throttle, clutch, and brake systems, allowing for remote operation via radio frequency without requiring the replacement of the main engine. Performance testing was conducted on various land conditions, measuring response time, tractor speed, theoretical and practical capacity, working efficiency, ploughing depth, wheel slip, and fuel consumption. Results showed that the solenoid-based control system responded reliably with an average delay of 1.5 seconds across all throttle positions. Average working speeds for throttle positions of 3 cm, 6 cm, and 9 cm were 1.872 km/h, 2.628 km/h, and 3.096 km/h, respectively. Wheel slip remained within the SNI standard of ≤ 25%, and fuel consumption averaged 0.33 liters per hour. Straight-line motion tests revealed a maximum deviation of 240 cm on uneven soil surfaces. This deviation is considered acceptable for hand tractor operations in Indonesia, where plot widths typically range from 15–25 m, and does not significantly reduce working efficiency. Overall, the modular remote-control system significantly improves usability and efficiency while providing a scalable, low-cost transition toward precision agriculture technologies in smallholder farming contexts.
Effect of welding repair on mechanical properties of ASTM A36 carbon steel weld joints Azwinur, Azwinur; Syukran, Syukran; Akhyar, Akhyar; Tho, Nguyen Huu; Jaswir, Jaswir
Jurnal Polimesin Vol 20, No 2 (2022): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v20i2.3075

Abstract

The welding repair process greatly affects the procedure of a welding process to be able to obtain the results of a connection that is safe and in accordance with its provisions. The strength of the welded joint must be considered and ensured that its strength is at least close to the original strength of the material used. In a welding process, errors or omissions are often made accidentally by the welder or the work environment and the selection of welding variable parameters is not appropriate so that welding defects occur. Welding defects can affect the strength of the weld joint. The purpose of this study was to determine the effect of welding repair on the mechanical properties of ASTM A36 material. The material used in conducting this research and testing is ASTM A36 steel plate. Welding was carried out on 4 specimens with the method without repair, repair 1x, repair 2x and repair 3x. Based on the test results, the number of repairs greatly affects the strength of the material connection. The highest maximum tensile strength value in 1 repair specimen is 501.90 Mpa and the lowest is in unwelded material or base metal of 467.97 Mpa. The results of the highest hardness test on the repair material 1 time of 30.83 HRC in the weld metal area and the lowest hardness value on the repair specimen 3 times in the HAZ area of 21 HRC. The results of the macro photo test on each specimen did not detect any welding defects on the inside of the welded material. the largest HAZ width in the 3 times repair material is 21.5 mm and the smallest HAZ width in the specimen without repair is 18 mm
Hydrometallurgical extraction of TiO2 from iron sand for industrial raw material Sukmara, Sony; Manaf, Azwar; Adi, Wisnu Ari; Putra, Adi Ganda
Jurnal Polimesin Vol 23, No 5 (2025): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i5.7751

Abstract

Titanium dioxide (TiO2) is an essential raw material widely used in Indonesia’s medical, cosmetic, paint, cement, aerospace, and defense industries. Despite its industrial importance, domestic TiO2 production remains limited, resulting in continued dependence on imports. Meanwhile, Indonesia possesses abundant iron sand resources that have not been fully utilized as potential raw materials for TiO2 extraction. This study aims to extract titanium dioxide from iron sand obtained from the southern coast of Lebak Regency, Banten Province. The extraction process began with the preparation of iron sand through washing, drying, and magnetic separation to isolate titanium-rich minerals, mainly ilmenite (FeTiO3) and titanomagnetite (Fe2TiO4). The ilmenite concentrate was leached using sulfuric acid (H2SO4, 96%) at 150–200 °C, forming titanium oxysulfate (TiOSO4) and ferrous sulfate (FeSO4). The solution was filtered, and titanium was precipitated as hydrated titanium dioxide (TiO2•H2O) through neutralization. The precipitate was washed, dried, and calcined at 500 °C to obtain anatase-phase TiO2. X-ray diffraction (XRD) analysis revealed dominant mineral phases of ilmenite (98.63%) and titanomagnetite (90.56%), while X-ray fluorescence (XRF) showed titanium contents of 22.72% in FeTiO3 and 20.45% in Fe2TiO4. The resulting TiO2 exhibited an anatase phase with 98.7% purity. The findings confirm that Lebak’s southern coastal iron sand is rich in titanium-bearing minerals, demonstrating its potential as a sustainable raw material for domestic TiO2 production. This study provides a preliminary foundation for optimizing the extraction process to enhance yield and support local industrial development.
Mitigating operational risks and enhancing machine performance through total productive maintenance and OEE: a case study on packaging equipment Ruspendi, Ruspendi; Rusmalah, Rusmalah; Hendra, Franka; Effendi, Riki
Jurnal Polimesin Vol 23, No 5 (2025): October
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i5.7469

Abstract

This study evaluates the effectiveness of a laser marking machine in an instant noodle packaging line using a Total Productive Maintenance (TPM) framework and Overall Equipment Effectiveness (OEE) metrics over a 12‑month period. A mixed‑method design combined direct observation, semi‑structured interviews with operators and technicians, and a literature review to assess availability, performance efficiency, and quality rate. The machine achieved excellent availability, averaging 98.95%, reflecting the impact of preventive maintenance in reducing unplanned downtime. Performance efficiency varied substantially, ranging from 59.13% to 93.27%, indicating significant headroom for productivity improvement through cycle‑time stabilization and minor‑stoppage reduction. The quality rate averaged 89.21% and remained relatively stable, though still short of ideal benchmarks, suggesting the need for tighter in‑process quality control. The monthly OEE peaked at 84.77% in April, approaching the JIPM benchmark of 85%, while the period average was 60.38%, underscoring the need for sustained improvement initiatives. Among the three components, performance efficiency exerted the greatest influence on OEE due to its high variability across months.

Page 48 of 51 | Total Record : 503

 46   47   48   49   50 

Filter by Year

2003 2025


Reset
Filter By Issues
All Issue Vol 23, No 5 (2025): October Vol 23, No 4 (2025): August Vol 23, No 3 (2025): June Vol 23, No 2 (2025): April Vol 23, No 1 (2025): February Vol 22, No 6 (2024): December Vol 22, No 5 (2024): October Vol 22, No 4 (2024): August Vol 22, No 3 (2024): June Vol 22, No 2 (2024): April Vol 22, No 1 (2024): February Vol 21, No 6 (2023): December Vol 21, No 5 (2023): October Vol 21, No 4 (2023): August Vol 21, No 3 (2023): June Vol 21, No 2 (2023): April Vol 21, No 1 (2023): February Vol 20, No 2 (2022): August Vol 20, No 1 (2022): February Vol 19, No 2 (2021): Agustus Vol 19, No 1 (2021): February Vol 18, No 2 (2020): Agustus Vol 18, No 1 (2020): Februari Vol 17, No 2 (2019): Agustus Vol 17, No 1 (2019): Februari Vol 16, No 2 (2018): Agustus Vol 16, No 1 (2018): Februari Vol 15, No 2 (2017): Agustus Vol 15, No 1 (2017): Februari Vol 14, No 2 (2016): Agustus Vol 14, No 1 (2016): Februari Vol 9, No 1 (2011): Februari Vol 8, No 2 (2010): Agustus Vol 8, No 1 (2010): Februari Vol 7, No 2 (2009): Agustus Vol 7, No 1 (2009): Februari Vol 6, No 2 (2008): Agustus Vol 3, No 2 (2005): Agustus Vol 2, No 1 (2004): Februari Vol 1, No 1 (2003): Agustus More Issue