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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.
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Articles 12 Documents
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Search results for , issue "Vol. 12 No. 1 (2025)" : 12 Documents clear
ANALISIS TEKANAN UDARA PADA PROSES THERMAL SPRAY ALUMINIUM TERHADAP KEKUATAN ADHESI DAN KETEBALAN LAPISAN COATING PADA BAJA AISI 1020 Fillah, Moh. Yusron; Hastuti, Sri; Nurhadi; Darmo, Adityo Noor Setyo Hadi
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.284

Abstract

The thermal spray aluminum (TSA) coating method is used to prevent damage to the metal surface and improve the quality of the metal surface by bonding the coating. The coating standard has a minimum thickness of 80-100 µm. According to AWS C2.23M/C2.23, NACE N0.12, SSPC CS-23, coatings submerged in seawater will experience a decrease in coating thickness of 20 µm. This study aims to examine the effect of air pressure in the thermal spray coating process on AISI 1020 steel on the bond strength of the coating to the base metal. The research was conducted using air pressure variations of 3 Bar, 3.5 Bar, and 4 Bar. Furthermore, dry film thickness, pull off adhesive, and bending tests were conducted. The dry film thickness test results show that the higher the air pressure, the coating thickness increases. The results of the pull off adhesive test show that the higher the air pressure the bonding strength of the coating also increases. The bending test results show results that are in accordance with standard practice item No.21100 where there are no cracks and small cracks are still allowed.
ANALISIS PENGARUH RASIO SERAT RAMI DAN HIDROKSIAPATIT TERHADAP KEKUATAN MEKANIK KOMPOSIT BERMATRIKS UHMWPE DENGAN METODE HOT PRESS Fathoni, Achmad Luthfian; Salahudin, Xander; Hastuti, Sri
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.294

Abstract

Composite is a material made from two or more combined substances that are bound together. Typically, biomaterials are made of metals. However, metals have a high elastic modulus, which leads to stress shielding, and they are expensive because metals are non-renewable materials. This study aims to analyze the mechanical strength of composites made from ramie fiber, hydroxyapatite, and UHMWPE as a potential non-metallic biomaterial, with variations in composition of 13%: 0%: 87%, 6.5%: 6.5%: 87%, and 0%: 13%: 87%. The composites were manufactured using a hot press at a temperature of 190°C, pressure of 100 bar, and a holding time of 15 minutes. The test results showed the composite containing 13% ramie fiber having the highest impact toughness and tensile strength values of 0.055 J/mm² and 10.75Mpa.
PENGARUH PENGGUNAAN BUSI STANDAR DAN BUSI IRIDIUM TERHADAP KONSUMSI BAHAN BAKAR PADA TOYOTA KIJANG 7K EFI Syamsuddin, Usman; sukri, Sukri
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.297

Abstract

Spark plugs are an important component in the combustion process in the combustion chamber. The type of spark plug used will affect fuel consumption. This study aims to determine the comparison of fuel consumption when using iridium spark plugs and standard spark plugs. The method used is to test on 3 variations of engine rotation, namely 1000, 1500 and 2000 rpm with a duration of 5 minutes. The results of the study show that the average fuel consumption when using iridium spark plugs is greater than that of standard spark plugs. The average fuel consumption using an iridium spark plug at 1000 rpm is 33 mL more wasteful than using a standard spark plug, at 1500 rpm the engine speed is 27 mL more wasteful and at 2000 rpm the engine is more wasteful by 10 mL. So it can be concluded that the use of iridium spark plugs in 3 variations of engine rotation is 20.14% more wasteful than using standard spark plugs.
PENGARUH KONSENTRASI HCl DALAM PROSES HIDROLISIS PADA PEMBUATAN BIOETANOL KULIT PISANG KEPOK Alfiansyah, Irsyad; Mujiarto, Sigit; Sulistiyo, Raka Mahendra; Dewi, Rany Puspita
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.300

Abstract

Dependence on fossil fuels results in depletion of petroleum. In solving this problem, it is necessary to use alternative fuels in the form of bioethanol. Bioethanol is made by utilizing kepok banana peels. There are quite a lot of banana peels, approximately one third of the bananas that have not been peeled. This study was conducted to analyze the ethanol content, water content, density, and viscosity of kepok banana peel bioethanol. This study uses an experimental method of the effect of HCl concentration (2%, 5%, and 8%) in the hydrolysis process in the manufacture of kepok banana peel bioethanol. From the results of the study, the best bioethanol characteristics at a concentration of 2% HCl with an ethanol content of 9%, a water content of 70.52%, a density of 0.9861 g/ml, and a viscosity of 0.010768212 dPa.s. The characteristics of the bioethanol produced are different from the characteristics of pertalite.
PENGECORAN BAHAN CETAKAN PERMANEN TELAPAK KAKI PALSU M. Rizky Dwi Yanza
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.301

Abstract

Molds of prosthetic feet can be made using aluminum materials by the metal casting method. This research aims to create a pattern design of molding materials for prosthetic feet that can reduce the use of the amount of material and time efficiency in making casting patterns. The creation of pattern design relies on the use of CAD software which is used as a reference for making prototypes to be produced through a machining process with the use of CAM technology on CNC machines to ensure the desired level of precision in sand casting trials. The results of this study show that the pattern prototype of the prosthetic sole molding material can meet the design specifications with a high degree of precision and function as an effective molding material.
ANALISIS KERUSAKAN KOMPONEN FINAL DRIVE CATERPILLAR EXCAVATOR 329 DL Razi, Misru; Munawir, Munawir; Khalik, Abdul; Arwin, Arwin
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.304

Abstract

The purpose of the research is to analyze the functional final drive components to increase torque. To find out more in-depth about how to fix the damage to the final drive. This study uses a field observation method by making direct observations by looking for the cause of damage, and how to overcome damage to the final drive components, and conducting and question-and-answer method so that the problem that occurs in the final drive is found. Damage to the final drive of the CAT 329 DL excavator is due to this unit traveling a long distance. As a result, the input shaft components on the final drive are worn out, causing damage that results in noise on the front of the final drive when running. The input shaft component is damaged and must be replaced with a new one; if left unchecked, it will cause damage to other components. Damage to the input shaft makes the track unable to move. Components present in the planetary gear
ANALISIS KERUSAKAN KOMPONEN MOTOR STARTER UNIT EXCAVATOR 329 DL CATERPILLAR Munawir, Munawir; Razi, Misru; Khalik, Abdul
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.309

Abstract

Machines require an electrical system to function and operate. The electrical system consists of batteries. The battery provides electric current to other electrical components. Machines that can produce large twisting moments require a starter component, as previously known. Electric motors are usually equipped with a solenoid to drive the pinion gear to a ring gear mounted around a flywheel, or flywheel, mounted on the crankshaft. Results of visual inspections carried out on all parts of the Motor Stater excavator 329DL. There was no wear or damage found on the Caterpillar. After carrying out a visual inspection, take measurements of the parts. The starter motor, after carrying out measurements, shows results that are under the specifications based on SIS/GRPTS.
PENGARUH PERLAKUAN PANAS (HEAT TREATMENT) DENGAN VARIASI QUENCHING TERHADAP KELELAHAN DAN KEKERASAN BAJA ST 41 Razak , Zainal Arman; fajar, fajar; Suryanta, Dhanu
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.318

Abstract

ST 41 steel is a low carbon steel, has a relatively low surface hardness, so it requires additional heat treatment to improve resistance to wear and cyclic loads. This study aims to examine the effect of variations in cooling media on the mechanical properties of ST 41 steel, especially hardness and fatigue resistance. The variations in cooling media used were water, SAE 20W-50 oil, and air at a temperature of 950°C with a holding time of 15 minutes. The heat treatment process includes preheating and hardening, followed by quenching using the three media. The results showed that the hardness of the steel increased significantly after heat treatment, with the highest value in water cooling (171 HV). In fatigue testing, untreated ST 41 steel showed 71,651 cycles, while heat treatment with oil, air, and water reduced the number of fatigue cycles to 30,571.67, 19,461, and 43,402.33 cycles
PENGARUH TEMPERATUR WATER COOLANT DAN AIR BIASA TERHADAP KONSUMSI BAHAN BAKAR PADA MESIN BENSIN DAIHATSU TARUNA EFI 1.6 Sukri, Sukri; Syamsuddin, Usman; Musthofa, Imron; Artika, Kurnia Dwi; Merpatih, Merpatih
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.320

Abstract

Vehicles with conventional engines produce heat from combustion in the engine, so that the engine temperature is stable, a radiator water system is needed. The purpose of this study was to determine the effect of water coolant and plain water temperatures on fuel consumption. The method used was to test 3 variations of engine speed, namely 1000, 1500 and 2000 rpm on fuel consumption and engine temperature. The results obtained showed that the average fuel consumption was the same when using water coolant and plain water at an engine speed of 1000 rpm and the water coolant temperature was 3 oC lower than the temperature of plain water. While the average fuel consumption when using water coolant was 17 mL lower than using plain water at engine speeds of 1500 rpm and 2000 rpm, with a temperature drop of 1-3 oC. So, fuel consumption and temperature were lower when using water coolant than when using plain water.
PENGARUH JENIS PEWARNA PADA PROSES ANODIZING ALUMINIUM T6 6061 TERHADAP HASIL PELAPISAN Hidayat, syarif; Darmo, Adityo Noor Setyo Hadi; Iswahyudi, Sigit
ELEMEN : JURNAL TEKNIK MESIN Vol. 12 No. 1 (2025)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v12i1.321

Abstract

This study examines anodizing on aluminum 6061 using chemical dyes (printer ink and clothing dye) and a natural dye (turmeric) at concentrations of 5%, 10%, and 15% w/v. The anodizing process was conducted at 12 volts, 2.5 amps, for 30 minutes. The research aims to evaluate the effects of dye type and concentration on color brightness, oxide layer thickness, and wear rate. Results indicate that dye concentration influences brightness, with the best outcome at 10% w/v printer ink (brightness level 5.4). Oxide layer thickness was unaffected by the type or concentration of dye used. Wear testing revealed that dyeing did not significantly affect wear resistance, with the highest specific wear rate on untreated material (11.01 x 10⁻⁴ mm³/kg.m) and the lowest on 10% w/v printer ink (7.63 x 10⁻⁴ mm³/kg.m). Overall, the findings suggest a limited impact of dye on the anodized aluminum's wear properties.

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