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Jurnal Elemen
Published by Politeknik Negeri Tanah Laut
ISSN : 24424471     EISSN : 25812661     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering
Jurnal Elemen is a media for publishing scientific articles in the field of mechanical and automotive engineering which are published regularly in June and December each year. All articles presented are the results of research, conceptual ideas and reviews in the field of mechanical and automotive engineering that have never been published before. Jurnal Elemen managed by P3M in the Tanah Laut State Polytechnic has been ISSN, namely the printed version of ISSN 2442-4471 and online version of ISSN 2581-2661, and for now the Elementary journal has been indexed in ISJD (Indonesian Scientific Journal Database) in PDII-LIPI . then it can be indexed and accredited at SINTA, DOAJ and Scopus.
Arjuna Subject : -
Articles 267 Documents
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PENGARUH PERLAKUAN MEDIA PENDINGIN NaCl TERHADAP PELAPISAN PERMUKAAN SURFACE TREATMENT PADA REL KERETA API UIC R54 Hari Boedi Wahjono; Rafli Rianzah Putra; Willy Artha Wirawan; Fadli Rozaq; Rezki Putra
ELEMEN : JURNAL TEKNIK MESIN Vol. 9 No. 2 (2022)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v9i2.213

Abstract

This study aims to understand and determine how effective the addition of NaCl in the quenching surface treatment media for the UIC R54 railroad. This study applies a method that refers to the theory of surface treatment. First, the surface treatment process is carried out on the surface of the rail specimen. The cooling medium used in the surface treatment process is a mixture of NaCl of 200-800gr NaCl at intervals of 200gr with 1000ml of water. Furthermore, observations of the microstructure and measurement of the hardness value on the surface of the rail specimen were carried out. The average hardness value for raw material specimens is 283.52 BHN. The highest hardness value in specimens that have been surface treated is 346.36 BHN in the treatment of adding 60% NaCl to the quenching medium. In raw material specimens, the phase formed is dominated by ferrite and pearlite. Meanwhile, the phase formed after the surface treatment process is martensite. From these results it can be concluded that a mixture of 60% NaCl with water used as a cooling medium is effective in increasing the hardness value of the rail.
ANALISIS PERPINDAHAN PANAS TUNGKU KRUSIBEL PELEBURAN ALUMINIUM PADA LABORATORIUM TEKNIK MESIN UNIDAYAN La Baride; Muhamad Iqbal Achmad; La Andika; Noor Dhani
ELEMEN : JURNAL TEKNIK MESIN Vol. 9 No. 2 (2022)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v9i2.214

Abstract

Heat transfer plays an important role in the metal smelting process, so it is important for analysis to be carried out. This study aims to analyze heat transfer in a charcoal-fueled crucible furnace equipped with a blower in the mechanical engineering laboratory, Dayanu Ikhsanuddin University. The experimental method in this study was carried out at a furnace crucible burned with mangrove charcoal and equipped with a blower as a channel to circulate air through a 2-inch tube. Based on the results of the study, the heat from mangrove charcoal fuel is 37985.364kJ, the heat of smelting of aluminum is 1635.24kJ, and the heat absorbed by the walls and cover of the furnace is 29152.76kJ. The heat escaping through the cover, chimney, and other losses is 7197.37 kJ. The efficiency of the charcoal-fueled crucible furnace is 81.05%.
PENGARUH VARIASI PENGASAPAN SERAT SABUT KELAPA SEBAGAI KOMPOSIT TERHADAP KEKUATAN IMPACT LA ODE ASMAN MURIMAN; AFDAL SYARIF; HASFANDI
ELEMEN : JURNAL TEKNIK MESIN Vol. 9 No. 2 (2022)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v9i2.218

Abstract

This study aims to determine the mechanical strength properties of coco fiber composites with changes in fumigation time versus impact strength. In this study, we used an experimental approach in which the 100 cm height non-fumigation coir composite was varied in fiber fumigation time for 3, 4, and 5 hours, and the strength of the fumigated coir composite was compared with that of the fumigated coir composite. fiber. compared to - Unfumigated composite materials. Based on the data analysis, the impact strength of the composite tends to decrease, with the fumigasion fiber having an impact value of 0.0404 J/mm2 at 3 hours and the fumigation fiber having an impact value of 0.0274 J/mm2 at 4 hours. has the fumigasion fiber for 5 hours per hour has an effect rate of 0.0241 J/mm2 and without smoking the effect rate is 0.0269 J/mm2.
MATERIAL KOMPOSIT POLIMER TAHAN BALISTIK UNTUK APLIKASI HELM MILITER DALAM MENDUKUNG MATERIAL PERTAHANAN INDONESIA Mahyaruddin Mrp; Sovian Aritonang
ELEMEN : JURNAL TEKNIK MESIN Vol. 9 No. 2 (2022)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v9i2.219

Abstract

Polymer composites are widely used in military applications. In this instance, to shed light on polymer composites and their uses in the field of defense, particularly ballistic ones. Military vests, personnel helmets, and other items that need to be made of ballistic-resistant materials but are still lightweight and reasonably priced, fall into three general categories. When it comes to enhancing the mobility of military forces, composite materials have outperformed metal materials in military applications. Given the speed of approaching bullets, it is crucial that military helmets contain composite materials, one of which is constructed of thermoplastic polymers and thermosets. Utilizing a bullet and a new polymer composite (UHMWPE) with a weight of 1000 g one suitable material for use in military bulletproof helmets is one with a speed of 600 m/s.
Ballistic Performance and Microstructure of Tempered AISI 4130 Steel Ilham Aminudin; Sovian Aritonang
ELEMEN : JURNAL TEKNIK MESIN Vol. 9 No. 2 (2022)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v9i2.220

Abstract

Heat treatment methods are generally carried out to increase ductility, increase hardness, increase metal tensile stress, and so on. AISI 4130 steel is commonly used for manufacturing equipment, vehicle parts, stone-crushing machines to body armor. To improve the quality of the steel, heat treatment is required by providing austenitizing and tempering processes. This study aims to determine the hardness, density, and ballistic performance of AISI 4130 steel after tempering at 290oC. The results of experiments on AISI 4130 steel which has been tempered at a temperature of 290oC with a time of 90 minutes. Gets a hardness of 45 HRC. For the density test, the result is 7.85 g/cm3. With the results of the ballistic test getting the numbers V = 635 m/s and V50 = 600 m/s, the penetration mode is plugging.
DESAIN RANCANGAN GANTRY: DESAIN RANCANGAN GANTRY CNC ROUTER 3 AXIS DENGAN PENDEKATAN TOPOLOGY M. Nushron Ali Mukhtar; Mochamad Andi Akrianto
ELEMEN : JURNAL TEKNIK MESIN Vol. 9 No. 2 (2022)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v9i2.224

Abstract

The 3 Axis Gantry CNC Router Design uses the finite element method as an essential step, bearing in mind that the shape displacement caused by the chisel movement must be as minimal as possible because it affects the quality of the craft. This study aims to optimize the gantry design of a three-axis CNC Router machine that is strong, light, and sturdy. This study uses the Finite Element Method with a topological approach to solving engineering problems. The results of the data analysis are in the form of von Mises, displacement, and safety factor values from the simulation of 10 kg, 20 kg, and 30 kg loading variations. Furthermore, optimization is carried out on the design of the gantry design using topological analysis to reduce the weight or mass of the gantry construction. The results of the modified gantry design are more optimal than the new and initial gantry designs, both from the effects of von Mises, displacement, and safety factors. In addition, the weight or mass of the modified gantry design is lighter by 1.8 kg.
PENGARUH VARIASI BUSI DAN BAHAN BAKAR TERHADAP PERFORMA MESIN KENDARAAN RODA DUA 135 CC Kurnia Dwi Artika; Imron Musthofa; Hajar Isworo; Rusuminto Syahyuniar; Rohmat Fahriansyah
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 1 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i1.222

Abstract

Spark plugs are the most important thing in the combustion system. Spark plugs in internal combustion using gasoline significantly affect vehicle performance. Likewise, fuel use must follow the compression ratio in the combustion chamber. The purpose of this study was to obtain the effect of differences in hot, cold, and medium spark plugs on engine performance and also the effect of fuel differences in supporting the performance of pertalite and pertamax two-wheeled vehicles in supporting the performance of 135 CC two-wheeled four-stroke vehicles in 2009. The result with hot spark plugs will maximizer-pm, increasing torque and power with pertalite fuel—the effectiveness of increasing power by 31%.
ANALISIS AERODINAMIKA PADA SIRIP LIPAT ROKET ARTILERI KALIBER 300 MM Ahmad Novi Muslimin; Robertus Heru Triharjanto; Yayat Ruyat
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 1 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i1.223

Abstract

Aerodynamic analysis is an important part of the rocket design process. In this study, the analysis was carried out on the design of the 300 mm diametres artillery rocket fins. The rocket was developed to replace the TNI AD MLRS rocket, which is currently an imported product, so the geometry of the MLRS launch tube is a design limitation, and the rocket fins must be able to fold before launch. Aerodynamic analysis was carried out using the RASAero II flight speed Mach 2.0 application. Variations in the dimensions of the fins used in this study were: the length of the front and rear edges of the fins with variations in the size of 10, 30, and 50 mm, the thickness of the base of the fins with variations in the size of 5, 10 and 15 mm. The simulation results show that the folding fin size 50T5R has a drag force of 145 N and a lifting force of 1081 N, a fin with an optimal design. Based on natural frequency analysis, fins with sizes 10T5R, 10T10R, 30T5R, 30T10R, 50T5R, and 50T10R are fins with structural values safe from vibrational resonance.
PENGARUH KETIDAKPASTIAN NILAI PARAMETER TERBANG TERHADAP TITIK JATUH ROKET R-HAN 300 Ahmad Riyadl; Robertus Heru Triharjanto; Pujo Widodo
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 1 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i1.226

Abstract

The impact point is the main parameter of the performance of an artillery rocket. During its flight, a rocket experiences uncertainty of some parameter’s value, which is caused by the condition of the rocket when it exits the launcher, the ever-changing atmospheric conditions, and fabrication imperfections. This disturbance will cause deviation on the impact point. This study aims to determine the deviation of the impact point of an artillery rocket due to the value uncertainty of several parameters that affect its flight trajectory, and this analysis will be used as a reference for designers and users in further design processes. Six degrees of freedom simulation calculates the rocket's impact point and deviation. The results showed that to minimize the impact point’s deviation, the quality of the launcher fabrication must be improved, predicting aerodynamics with CFD and firing the rocket at low wind disturbances.
ANALISIS KARAKTERISTIK STRUKTUR MATERIAL SWING ARM TERHADAP RESPON GETARAN ACAK PADA SEPEDA MOTOR HONDA SUPRA X 125R MENGGUNAKAN METODE ELEMEN HINGGA Ilham Winarno; Eka Marliana
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 1 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i1.227

Abstract

This research was conducted to determine the structural characteristics of each type of swing arm material of the Honda Supra X 125R motorcycle against random vibration responses. The random vibration response is modeled in modal analysis so that the value of natural frequency, maximum displacement, and correction factor that occurs can be identified. This research is based on FEM simulation by making 3D modeling using Autodesk Inventor software, which is then simulated using Ansys software. Based on the results of the FEM simulation, it was found that the most dominant mild steel material with the best response was SS400, with a maximum equivalent stress (von Mises) value of 16.601 MPa and a maximum displacement of 2.9109e–002 mm. The modal analysis results also show that the SS400 material has the most dominant response, with the highest average natural frequency in shapes 2, 4, and 5 modes, and has the smallest displacement value in shapes 1, 3, and 4 modes.

Page 16 of 27 | Total Record : 267

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