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INDONESIA
Journal of Mechanical Engineering
Published by Indonesian Journal Publisher
ISSN : -     EISSN : 30465907     DOI : https://doi.org/10.47134/jme
Core Subject : Engineering,
Automotive Engineering Engineering
The Scope of Journal of Mechanical Engineering is: Design Engineering: This journal covers topics such as machine design, structural analysis, design optimization, and the latest design techniques in mechanical engineering. Material Engineering: Encompassing studies on material properties, material characterization, material modelling, and material applications in the context of mechanical engineering. Thermal Engineering: Presenting current research on thermal systems, heat transfer, thermal fluids, and the application of thermal technology in mechanical engineering. Mechatronics: Covering the integration of mechanics, electronics, and control technology in the design and manufacturing of advanced mechanical systems. Manufacturing: Featuring articles on manufacturing techniques, manufacturing processes, and innovations in mechanical product manufacturing. Fluid Dynamics: Providing research on fluid flow, turbulence, aerodynamics, hydraulics, and engineering applications in fluid dynamics. Energy and Environment: Discussing the development of renewable energy technologies, energy efficiency, environmental impacts, and environmentally friendly technologies in the context of mechanical engineering. Automotive Engineering: Including articles on the latest developments in automotive design, production, and automotive technology. The Journal of Mechanical Engineering provides a forum for original research, review articles, technical papers, and practical contributions in all aspects of mechanical engineering. Its aim is to facilitate the exchange of ideas and the latest updates in this field, as well as to encourage innovation and advancement in mechanical technology.
Arjuna Subject : Teknik (semua kategori) - Teknik Otomotif
Articles 50 Documents
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Analisis Pengaruh Kecepatan Potong dan Jenis Material Pahat Terhadap Keakurasian Ukuran Pada Mesin CNC Milling Mini 3 Sumbu Pramono, Tito; Nugroho, Pipit
Journal of Mechanical Engineering Vol. 2 No. 3 (2025): July
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v2i3.4727

Abstract

Mesin CNC (Computer Numerical Control) milling merupakan mesin perkakas berbasis kontrol komputer yang digunakan untuk produksi dengan tingkat akurasi dan kuantitas tinggi. Penelitian ini bertujuan untuk menganalisis pengaruh kecepatan potong dan variasi material pahat terhadap keakurasian dimensi hasil pemesinan pada mesin CNC Milling Mini 3 Sumbu. Metode yang digunakan kuantitatif dengan eksperimen dengan variasi kecepatan potong (120, 140, 160, dan 180 m/menit) serta dua jenis material pahat, yaitu HSS dan Carbide. Material benda kerja yang digunakan adalah aluminium 1060. Hasil penelitian menunjukkan bahwa kecepatan potong berpengaruh signifikan terhadap keakurasian dimensi benda kerja; semakin tinggi kecepatan potong, semakin besar penyimpangan dimensi yang terjadi. Sebaliknya, variasi material pahat tidak memberikan pengaruh signifikan terhadap keakurasian, dengan selisih penyimpangan yang kecil pada arah X (0–0,003 mm), Y (0,001–0,003 mm), dan Z (0,001–0,004 mm). Interaksi antara kecepatan potong dan material pahat juga tidak menunjukkan pengaruh signifikan terhadap hasil akurasi, dengan kisaran penyimpangan dimensi sebesar 0–0,006 mm. Simpulan dari penelitian ini adalah bahwa peningkatan kecepatan potong dapat menurunkan akurasi dimensi hasil pemesinan, sementara jenis material pahat memiliki pengaruh yang tidak signifikan terhadap hasil akurasi ukuran.
Analysis and modeling of Stresses and Deflections Generated on the Reversible Moldboard plow Attached to the Angular Scraper Under various soil conditions Haleem, Rateeb; Rajab, Adel
Journal of Mechanical Engineering Vol. 2 No. 4 (2025): October
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v2i4.4767

Abstract

This study was conducted theoretically using the (Inventor) software, which relies on the finite element method to determine the values of both maximum stress, principal stress, and deflection for both the angular scraper and the moldboard plow under conditions similar to field conditions. The study was conducted in two stages: the first stage involved fixing the dimensions and measurements of the angular scraper and then manufacturing it. The second stage involved field evaluation of the performance efficiency of the locally manufactured reversible moldboard plow with the angular scraper, comparing it with the reversible moldboard plow without the angular scraper, and studying some field performance indicators through a practical experiment that included the following factors: the use of the reversible moldboard plow at two levels (with the locally manufactured angular scraper and without the angular scraper), soil condition at two levels (with weed soil and without weed soil), using a Randomized Complete Block Design (RCBD) with split-plot design, and the effect of these factors on the studied traits, which included stress, vertical deflection ratio, lateral deflection ratio, and performance efficiency. The results showed that the angular scraper recorded higher values for both maximum stress and principal stress, while the moldboard of plow recorded the highest value for deflection. Moreover, untilled soil condition significantly outperformed in providing higher values for performance efficiency, while tilled soil condition significantly outperformed in providing higher values for both vertical and lateral deflection ratios. As for the plow, the plow with the angular scraper significantly outperformed in recording higher values for performance efficiency, while the plow without the angular scraper significantly outperformed in recording higher values for both vertical and lateral deflection ratios.
Analisis Pengaruh Dimensi dan Ketebalan Hollow ST 37 terhadap Kekuatan Rangka Sepeda Motor Listrik dengan Metode Elemen Hingga (FEM) Nabil, Mohammad; Faizin, Akhmad
Journal of Mechanical Engineering Vol. 2 No. 3 (2025): July
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v2i3.4794

Abstract

Rangka merupakan komponen penting pada sepeda motor listrik yang berfungsi menopang beban dan menjaga kestabilan struktur. Penelitian ini bertujuan menganalisis pengaruh variasi dimensi dan ketebalan besi hollow ST 37 terhadap tegangan Von Mises, deformasi, dan faktor keamanan pada rangka sepeda motor listrik tipe Trellis. Metode yang digunakan adalah simulasi berbasis Finite Element Method (FEM) menggunakan perangkat lunak Catia V5. Variasi meliputi tiga ukuran hollow (20×40 mm, 60×40 mm, dan 75×40 mm) dengan ketebalan 0,8 mm, 1 mm, 1,2 mm, dan 1,5 mm. Beban statik 2.394 N diaplikasikan untuk mensimulasikan kondisi nyata. Hasil analisis menunjukkan bahwa peningkatan dimensi dan ketebalan menurunkan tegangan Von Mises dan displacement, sekaligus meningkatkan faktor keamanan. Profil 20×40×0,8 mm menghasilkan tegangan dan displacement tertinggi (0,417 mm), sedangkan profil 75×40×1,5 mm menunjukkan hasil terbaik dengan displacement terendah (0,075 mm) dan faktor keamanan tertinggi (57,379). Seluruh variasi rangka memiliki faktor keamanan di atas 2, sehingga dinyatakan aman. Disimpulkan bahwa pemilihan dimensi dan ketebalan yang tepat berpengaruh signifikan terhadap performa struktural. Kombinasi optimal adalah profil 75×40 mm dengan ketebalan 1,2–1,5 mm karena mampu memberikan keseimbangan antara kekuatan, kekakuan, dan efisiensi material.
Circular Strategy Through Heat Treatment of Recycled Piston Rings for the Sustainability of the Automotive Economy Abdillah, Fuad; Fatra, Fahmi
Journal of Mechanical Engineering Vol. 2 No. 4 (2025): October
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v2i4.4938

Abstract

This study investigates the enhancement of mechanical performance in recycled piston rings through strategic heat treatment. The research focuses on optimizing heat treatment parameters—including austenitizing temperatures (800°C, 850°C, and 900°C), holding times (1, 2, and 3 hours), and cooling media (water, oil, and air)—to restore the hardness of used piston rings to levels comparable to new ones. Experimental methods were employed to evaluate the effects of these variables on material hardness. Results show that a holding time of three hours significantly improved hardness, with the highest achieved value reaching 38.66 HRC—nearly matching that of new piston rings (39.94 HRC). These findings demonstrate that properly controlled heat treatment can effectively rejuvenate recycled piston rings, offering a viable pathway to improve resource efficiency and reduce metal waste in the automotive industry
Development of Fuel Cell Technology and Applications: A Review Elaibi, Ali Mohammed
Journal of Mechanical Engineering Vol. 2 No. 4 (2025): October
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v2i4.5001

Abstract

Fuel cell technology is considered one of the most important solutions for clean energy, characterized by its high efficiency, minimal pollution, and adaptability across various sectors such as transportation, stationary energy, and portable electronics. Over the past two decades, significant progress has been made in materials science, system design, and cost optimization, enhancing the feasibility of commercialization. This paper follows the development of various types of fuel cells, including Proton Exchange Membrane Fuel Cells (PEMFC), Solid Oxide Fuel Cells (SOFC), Direct Methanol Fuel Cells (DMFC), Phosphoric Acid Fuel Cells (PAFC), Molten Carbonate Fuel Cells (MCFC), and Alkaline Fuel Cells (AFC), highlighting key innovations and market launches. The review emphasizes significant technical challenges, particularly concerning durability, catalyst degradation, and hydrogen infrastructure systems. Additionally, it outlines the existing state of fuel cell technology and proposes a strategy for integrating fuel cells into global low-carbon energy systems. From a decarbonization perspective, incorporating fuel cells into energy systems is crucial, as they not only provide high efficiency but also operate without emitting harmful pollutants. The article reviews advancements in fuel cell technology from 2020 to 2024, comparing performance metrics with market applications and obstacles to market entry. Assessments of over 80 peer-reviewed studies indicate that PEMFCs are achieving 0.85 A/cm² at 0.6V, while SOFCs are reaching 60% electrical efficiency in combined heat and power (CHP) applications. Currently, most deployments, comprising 62% of market share, are in the transportation sector; however, significant challenges remain in material stability and hydrogen infrastructure. Progress in fuel cell technology hinges on the integration of anion-exchange membranes, platinum-group-metal-free catalysts, and advanced manufacturing capabilities.
Perancangan Dies dan Roller Pada Mesin Pellet biomassa Sugandi, Darwin
Journal of Mechanical Engineering Vol. 3 No. 1 (2026): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v3i1.5138

Abstract

The problem of fossil energy limitations encourages the development of renewable energy, one of which is biomass. Wood powder waste that has been underutilized has the potential to be processed into biomass pellets as an environmentally friendly alternative fuel. This study aims to design dies and rollers on biomass pellet machines that are capable of processing wood powder waste into cylindrical pellets with a focus on their strength and safety analysis. The methods used to determine strength and safety are simulations using solidworks as well as theoretical calculations to validate the results. The results showed that the design of dies with a hole diameter of 8 mm and a suitable roller can produce biomass pellets with a good level of density and efficiency. Simulations of voltage, strain and safety factors on components indicate a safe and feasible design to implement. This research contributes to the development of biomass pellet machine technology and the use of wood powder waste into renewable and environmentally friendly energy.
Optimizing Melon Seed Decortication: A Taguchi-Based Approach for Single and Multi-Objective Performance Kevin, Tsapi; Ekokem, Magnou
Journal of Mechanical Engineering Vol. 3 No. 1 (2026): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v3i1.5352

Abstract

This study was conducted to optimise the parameter sets for a melon seed shelling machine. The parameter sets are motor speed and moisture content with different levels were experimented and analysed to build mathematic models. The objective was to describe the relationship between the inputs parameter values and the outputs (shelling efficiency, breakage percentage and machine capacity). Single-objective and multi-objective models were constructed and studied to identify the    optimal set, optimal trade-off set of parameters. Minitab software aid for analysis and decision-making. The optimisation revealed a significant trade-off between single objectives) (optimal settings for maximising shelling efficiency (96.7%), minimising seed breakage (1.41%), and maximising capacity (53.98 kg h-1) were mutually exclusive. Multi-objective analysis identified moisture content as the statistically dominant factor (p < 0.05), with motor speed being insignificant. The validated optimal parameter combination for balanced performance was moisture content of 26% and a motor speed of 2100 rpm, which simultaneously improved all three key performance metrics. The proposed solutions for handling single- and multi-objective optimisation through the framework are practical and can be extended to other post-harvest processing equipment.
Effect of Heat Treatment on the Microstructure and Hardness of Low-Alloy Carbon Steel Used in Structural Applications Ahmed, Teba
Journal of Mechanical Engineering Vol. 3 No. 1 (2026): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v3i1.5364

Abstract

This research was conducted to evaluate the effects of various heat treatment methods on the microstructure and mechanical properties of low alloy carbon steel used in structural applications. The laboratory samples underwent a series of annealing, normalizing, quenching, and tempering processes, leading to the development of fine grains within specific temperatures of the austenitic range. The holding time for uniform temperature distribution was maintained by subsequent cooling rates through air, oil, and water quenching. An optical microscope showed substantial variations in the shapes of ferrite and pearlite, whereas a SEM could see the shape of martensite, depending on how it was treated. Mechanical tests, including the Vickers hardness test and the tensile strength test, were conducted to correlate the development or change in properties. The highest hardness is reported owing to the production of quenched samples, which is explained by tempering ductile materials to make them less brittle. Provided normalized showed balanced and appropriate for both needed use The research includes useful data that engineers may use to improve the performance of building materials that are exposed to changing load situations by changing the parameters of heat treatment. This, therefore, gives a good reason to choose the right way to heat treat low-alloy steels to get the needed mechanical qualities.
Economic Analysis of Hydrogen Production and Storage Systems Utilizing Renewable Energy Sources Ali Mohammed Elaibi
Journal of Mechanical Engineering Vol. 3 No. 1 (2026): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v3i1.5485

Abstract

By converting to an environmentally friendly energy system, water electrolysis technology based on renewable sources (like solar photovoltaic and wind power) has presented a sustainable route to carbon-neutral hydrogen generation. In this paper, we introduce a complete techno-economic characterization of renewable electric hydrogen production technologies within storage systems. Our review presents existing pricing profiles including electrolysis capital investment costs, renewable energy pricing systems, and operating parameters. We cover various storage forms (compressed gaseous hydrogen, cryogenic liquid hydrogen, geological formations) and three main electrolyzer technology stacks: alkaline electrolyzers (AEL), proton exchange membrane electrolyzers (PEM), and solid oxide electrolysis cells (SOEC). For these reasons, Levelized Cost of Hydrogen (LCOH) is considered the most significant economic indicator of these experiments. With data available that provides a glimpse of the potential cost reductions associated with scale-up of the manufacturing process, technological advancement, and decreasing costs associated with renewable energy, we sought to explore potential cost reductions regarding cost of this process. The total cost of producing low-carbon hydrogen is currently estimated at between $4 and $8 per kilogram, but it is projected to drop to $2 per kilogram by 2040, which is expected to be comparable to the cost of producing hydrogen from fossil fuels. To ensure the success of this technology, it is essential to develop integrated plans that combine, a supportive policy framework and the use of new methods to increase the efficiency of electrolysis, while maintaining reasonable cost-effectiveness, Total costs of producing low-carbon hydrogen.
Analysis of the Impact of Controller Variation and Battery Efficiency on the Performance of Light Electric Vehicles Abdillah, Fuad
Journal of Mechanical Engineering Vol. 3 No. 1 (2026): January
Publisher : Indonesian Journal Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47134/jme.v3i1.5538

Abstract

Electric vehicles (EVs) have emerged as a sustainable transportation alternative to reduce fossil fuel dependence and carbon emissions. However, EV performance is strongly influenced by battery efficiency and control system configuration, particularly controller selection. This study analyzes how controller variation and battery efficiency affect the performance of the Viar EV1 1000W electric motor. An experimental approach compared Bosch and QS Motor controllers on a 1000W BLDC motor, with torque, power, speed, voltage, and battery efficiency systematically measured using a dynamometer and digital multimeter. Results demonstrate that the QS Motor controller significantly outperforms Bosch across all parameters delivering higher torque, power, speed, voltage stability, and battery efficiency. The study concludes that QS Motor controller implementation enhances performance and efficiency in light EVs such as the Viar EV1 1000W. This research contributes practical insights for the automotive industry on selecting optimal controllers to improve energy efficiency and system reliability in electric vehicles.

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