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Jurnal Inovasi Mesin
Published by Universitas Negeri Semarang
ISSN : -     EISSN : 27467694     DOI : https://doi.org/10.15294/jim
Core Subject : Engineering,
Mechanical Engineering
The main scope of the JIM is to publish original research articles in the area of mechanical engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 20 Documents
 1   2 
Strength Analysis of Wheel Stopper Design on Dyno Test Based on Solidwork 2019 Software Purba, Samuel Julianto; Aryadi, Widya
Jurnal Inovasi Mesin Vol. 6 No. 2 (2024): OCTOBER 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v6i2.20153

Abstract

Various innovations have been made in all parts of the world to deal with global warming. One of them is making electric vehicles. One of the things that must be done to keep up with the number of electric vehicle production is to innovate the vehicle 'test' tool. The dyno test is one of the 'test' tools for electric vehicles on two wheels. One of the innovation gaps that can be addressed is creating a wheel stopper design on a new dyno test to speed up production time. The wheel stopper was designed using a hydraulic system with MTEK WC1 UNS J13047 cast alloy steel metal material. The design was done using Autodesk Inventor 2024 and analyzed using Solidwork 2019. Then, the analysis results are compared with the existing wheel stopper design using ASTM A36 steel. It will also determine whether a hydraulic system design can be implemented. The maximum displacement and minimum safety factor results obtained on the hydraulic wheel stopper are 0.1746 mm and 2.5. These results show that the hydraulic wheel stopper design can be implemented
Design and development of body electrical system and controller temperature control system for electric motorcycles Kurniawan, Aldi; Setiadi, Rizki; Sumbodo, Wirawan; Naryanto, Rizqi Fitri
Jurnal Inovasi Mesin Vol. 7 No. 1 (2025): APRIL 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v7i1.21246

Abstract

The rapid evolution of technology has transformed the automotive industry, transitioning from internal combustion engines to electric vehicles (EVs) to reduce greenhouse gas emissions and dependence on fossil fuels. This study focuses on developing a body electrical system for electric motorcycles by integrating components like lead-acid batteries, pulse-width modulation (PWM) controllers, waterproof DS18B20 temperature sensors, DC-DC converters, and energy-efficient LED lighting. The system is designed to comply with Indonesia’s National Standards (SNI). Employing the 4D research methodology (Define, Design, Develop, Disseminate), the electrical system underwent rigorous validation and testing. Results highlight enhanced performance, improved energy efficiency, and effective thermal management. The integration of a temperature control system reduced the risk of overheating, ensuring safety and operational reliability. This research contributes to advancing EV technology, offering a framework for optimizing body electrical systems for electric motorcycles in compliance with safety and performance standards
Analysis of biodiesel yield percentage from used cooking oil with variations in stirring time Dewi, Sukhma Kusuma; Faizal, Ahmad; Sutriyatna, Sutriyatna
Jurnal Inovasi Mesin Vol. 7 No. 1 (2025): APRIL 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v7i1.22431

Abstract

The increasing volume of hazardous and toxic waste (B3), particularly from used cooking oil, poses significant environmental and health challenges. One promising solution is converting this waste into biodiesel, thereby promoting renewable energy development while reducing ecological risks. This study investigates the yield percentage of biodiesel produced from waste cooking oil using a magnetic stirrer. The research aims to determine the optimal stirring duration to maximize yield and evaluate the flame duration of the resulting biodiesel. The process involved tool and material preparation, biodiesel production via transesterification, and subsequent data collection and analysis. The findings revealed that the highest biodiesel yield, 58.4%, was achieved at a stirring duration of 45 minutes, whereas the lowest yield, 51.2%, occurred at 60 minutes.
A comprehensive study of infrastructure failures in the energy industry to improve operational safety Ardyrizky, Dhanies Wahyu; Prabowo, Aditya Rio; Baek, Seung Jun; Do, Quang Thang
Jurnal Inovasi Mesin Vol. 7 No. 1 (2025): APRIL 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v7i1.22583

Abstract

The demand for crude oil continues to increase in line with expanding needs, but this contrasts with its limited availability in nature. The oil and gas industry is one of the key sectors in the global economy, encompassing exploration, refining, processing, transportation, distribution, and sales. Given the high-risk working environment, safety is a crucial factor that must be considered. In recent decades, numerical methods have been widely used to enhance the effectiveness and efficiency of safety analysis, particularly in risk identification, equipment condition monitoring, and optimizing hazard mitigation strategies. This report discusses the application of numerical methods in improving the quality of planning, maintenance, and failure mitigation of various components and infrastructure at PT Pertamina Patra Niaga Fuel Terminal Boyolali. The study focuses on MOV with the friction coefficient between the stem and stem nut, pipeline systems concerning corrosion in elbows caused by chemical compounds carried by oil, and storage tanks related to temperature control within the tank to maintain the quality and quantity of oil as per demand. A comprehensive study shows that lubrication can limit the friction coefficient in MOV, while viscosity is a significant issue in pipeline systems and storage tanks. Numerical approach methods can improve the energy industry's safety, reliability, and efficiency. Modeling can reduce costs, time, and worker safety risks compared to experimental approaches.
Design of An IOT-Based Voltage and Current Monitoring System and Turbine Performance Analysis In A Micro Hydro Power Plant Syahbana, Zaka; Setiadi, Rizki
Jurnal Inovasi Mesin Vol. 7 No. 1 (2025): APRIL 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v7i1.23615

Abstract

Microhydro power plants (MHPP) are a potential renewable energy solution for remote areas that have abundant water resources. However, monitoring the performance of MHPP systems in these areas is still a challenge, especially in terms of reliability and energy conversion efficiency. This research aims to design and develop an Internet of Things (IoT)-based monitoring system capable of monitoring real-time voltage and current in MHPs. The system was tested using the Archimedes Screw turbine in a laboratory-based test scale, and a literature study was conducted to compare the effectiveness of several types of micro hydro turbines such as Pelton, Crossflow, Turgo, and Archimedes Screw. The results showed that although the efficiency of screw turbines is relatively lower, they are suitable for use in locations with low head and stable water flow. The 4D approach method was used in the development of this monitoring system, and the results show that the system is able to provide accurate data and support the improvement of MHPP operational reliability.
The Effect of Variations In Clear Coat Application Distance On The Glitter of The Painting Results Fatkhurokhman, Najib; Hidayat, Hanif; Nubli, Haris
Jurnal Inovasi Mesin Vol. 7 No. 2 (2025): OCTOBER 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v7i2.22624

Abstract

Painting defects in  the repainting  process in the vehicle body repair industry are still a common problem. The main factor causing painting defects is manual application that is not in accordance with standard operating procedures. Painting the vehicle body functions to protect the surface and increase aesthetic value, but there are still frequent painting defects such as rough surfaces, spots, and melting due to improper application. This study aims to examine the distance of application of clear coat to the quality of painting results with minimal defects. The research design used was an experimental  research design with a variety of spraying distances of 10 cm, 15 cm, 20 cm, 25 cm and the measurement of the gloss value was carried out using a gloss meter. The results of the study show that the spraying distance greatly affects the gloss value of the painted results. A distance of 15 cm results in the best gloss value of 90.94 GU with no paint defects, while a distance of 25 cm results in the lowest gloss value of 58.50 GU with rough and dull surfaces. Too close a distance increases the shine power but has the potential to cause defects in the form of  a melted clear coat  layer. This study concluded that the optimal distance for spraying clear coats is 15 cm to achieve high-quality painting results
Numerical Analysis of The Effect of Chine Variation on The Design of The Senopati Catamaran Fishing Boat on Resistance Based on Maxsurf Resistance Software Fahmi, Fiqri Fadillah; Bahatmaka, Aldias; Naryanto, Rizqi Fitri; Sang Won, Lee
Jurnal Inovasi Mesin Vol. 7 No. 2 (2025): OCTOBER 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v7i2.26453

Abstract

The majority of fishermen in Indonesia still rely on traditional boats that have been built and passed down through generations. These fishermen tend to focus primarily on maximizing their catch, often overlooking other important aspects such as hydrodynamic resistance. In reality, beyond the fishing gear used, one of the key factors influencing the effectiveness of a fishing vessel is its hull design. This study aims to analyze the resistance characteristics of a catamaran-type fishing vessel designed by the Senopati Team. The analysis was conducted using Maxsurf Resistance software with speed variations ranging from 1 to 15 knots. To determine the optimal resistance performance, chine variations were introduced to the hull design, including both single and double chine configurations. Each variation applied chine widths of 5%, 6%, and 7% of the vessel's beam, with chine heights of 1.1 meters and 1.4 meters. The analysis results indicate that resistance increases with vessel speed. However, an increase in chine width generally leads to a reduction in resistance. The most optimal hull configuration was identified as the single chine with 7% width and 1.4 meters height. These findings suggest that the incorporation of chine variations, whether single or double, can effectively reduce the resistance experienced by the vessel compared to a bare hull configuration.
Stiffness Improvement of Corrugated Metal Roofs through Cross-Sectional Geometry Modification Zidan Yusron Wijanarko; Prasetiyo, Angger Bagus
Jurnal Inovasi Mesin Vol. 7 No. 2 (2025): OCTOBER 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v7i2.31504

Abstract

Nowadays, many Indonesian commonly use metal trapezoidal corrugated roofs for their residential needs. Nevertheless, the roofs often deformed or failed due to heavy rains or storms, especially in tropical regions like Indonesia. Therefore, a new model was investigated and proposed in this research to enhance the stiffness-to-weight ratio of the roofs. Computational simulation was conducted to compare the existing and the proposed model of the roofs. The addition of some small folds in certain positions successfully increases the stiffness-to-weight ratio of the roof by 11.58% compared to the existing model.
Fabrication of a Motor Vehicle Ignition System Simulation Tool Wiraendra, Nur Adnan; Irfan maulana
Jurnal Inovasi Mesin Vol. 7 No. 2 (2025): OCTOBER 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v7i2.33476

Abstract

The rapid development of technology has had a significant impact on innovations in learning media within the field of education, including practical activities conducted in the Thermal Laboratory of Politeknik Negeri Bandung. Learning about thermal engines, particularly gasoline engines, requires a thorough understanding of how the ignition system works. Until now, students have only received explanations through theory or videos, resulting in limited comprehension and insufficient stimulation for the development of practical skills. This study aims to develop a learning media in the form of an ignition system simulation tool for motor vehicles. This tool allows students to directly observe the ignition process, thereby enhancing their understanding and analytical abilities regarding the performance of the ignition system. The simulation tool was created using a DC motor as a substitute for engine rotation. The process of fabricating this simulation tool includes several stages, namely needs analysis, design, fabrication, and testing. The test results indicate that the DC motor in this simulation tool is capable of producing a maximum rotational speed of 3100 RPM, with a power requirement of 12 V and a current of 2 A. The spark produced at the spark plug appears blue and clearly visible, indicating that the tool can function optimally as an interactive learning media.
The Effect of Silane Treatment on Interfacial Shear Strength and Wettability ofLuffa Cylindrica Fiber Al Islam, Ridho; Wisnu Raharjo, Wijang; -, wibowo
Jurnal Inovasi Mesin Vol. 7 No. 2 (2025): OCTOBER 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jim.v7i2.34364

Abstract

Luffa cylindrica, a plant from the Cucurbitaceae family, is abundant but remains underutilized. Its simple fiber extraction and high cellulose content make it a potential eco-friendly reinforcement material for composites. This study examines the effect of silane concentration on the interfacial shear strength (IFSS) and wettability of Luffa cylindrica fibers. The fibers were treated with silane solutions at concentrations of 0.5%, 1%, and 1.5%. Tests included IFSS, wettability, and SEM analysis. Results show that silane treatment improves both IFSS and wettability, with the highest values obtained at 0.5% concentration (3.68 MPa and 43.94 mN/m, respectively). SEM observations confirmed better fiber–matrix adhesion at this concentration, where multiple matrices were attached and embedded on the fiber surface. These findings highlight the potential of silane-treated Luffa cylindrica fibers as effective reinforcements for composites

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