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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 3 Documents
 1 
Search results for , issue "Vol. 3 No. 1 (2026): January" : 3 Documents clear
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.

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