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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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ANALISIS PERUBAHAN KECEPATAN SPINDLE TERHADAP KEKASARAN PERMUKAAN DAN KEAUSAN PAHAT PADA PEMBUBUTAN BAJA AISI 4340 Manta, Faisal; Artika, Kurnia Dwi; Radyantho, Kholiq Deliasgarin; Taufiq
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.210

Abstract

The cutting quality of a lathe is influenced by various cutting parameters. Spindle speed is the main parameter that influences the level of surface roughness and tool wear. The research aims to understand the impact of using a VNMG 160408-MA type insert tool in cutting AISI 4340 steel on surface roughness and tool wear values. The spindle speeds used are 190 rpm, 300 rpm, 460 rpm, 755 rpm, 1,255 rpm, feed rate 0.209 mm/rev, and cutting depth 0.5 mm. Experimental methods were used in the research. The research results showed that variations in spindle speed had a significant effect on surface roughness, tool wear and cutting temperature as evidenced by the P-Value < 0.05. At a value at a spindle speed of 190 rpm, the surface roughness value was 6.195 μm, tool wear was 0.002 grams and tool temperature was 48.178 °C. The spindle speed value of 1,255 rpm measured a surface roughness value of 1.971 μm, tool wear of 0.053 grams, and tool temperature of 90.389 °C.
STUDI KOMPARATIF PENGARUH NITROCARBURIZING TERHADAP SIFAT MEKANIK DAN SIFAT FISIK BAJA KARBON RENDAH Saputro, Yunus Bayu; Nurhadi; R. Faiz Listyanda
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.282

Abstract

The increasingly widespread use of structural steel in everyday life, despite its tendency to undergo corrosion, results in financial losses and poses safety risks if damage occurs. This study aims to analyze the effects of nitrocarburizing on the hardness, corrosion rate, microstructure, and composition of low-carbon materials SS400 and ASTM A36. The research method used is experimental. Data analysis techniques were obtained by comparing the results of each test. The nitrocarburizing test results showed differences in hardness values and corrosion rates for SS400 and ASTM A36. The SS400 test results at 350°C were 221.04 VHN and 0.26993 mpy, at 400°C were 278.85 VHN and 0.30959 mpy, and at 450°C were 440.39 VHN and 1.4548 mpy. The ASTM A36 test results at 350°C were 377.43 VHN and 0.43071 mpy, at 400°C were 399.58 VHN and 0.085371 mpy, and at 450°C were 230.83 VHN and 1.4336 mpy.
STUDI EKSPERIMEN PENGGUNAAN MIXED ADHESIVE SIKAFLEX-EPOXY PADA KONFIGURASI SAMBUNGAN SINGLE LAP JOINT ALUMINIUM Widyatno, Alfian; Hastuti, Sri; Nurhadi
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.283

Abstract

Adhesives are an alternative to many joints because they are cost-effective, corrosion-resistant, neat, and strong for low-load construction such as window/door frames. Aluminum material is rigid but deformable, making it prone to cracks in the adhesive joint area. The addition of sikaflex was chosen because it is a low stiffness and elastic adhesive that bonds well to metals, ceramics, and plastics. The purpose of this research is to analyze the effect of adding sikaflex to epoxy adhesives with a percentage of 15%, 25%, and 35% on the shear tensile strength of aluminum single lap joints. The surface of the adherend was given a roughness treatment by sandblasting method to improve the mechanical interlocking between the adherend and the adhesive.  The sandblasting roughness test before treatment was 0.50 µm to 2.90 µm. Shear tensile test results of sandblasted specimens increased in all mixed adhesive variations. The highest strength mixed adhesive with composition 15%SF: 85%EP. Visual observation showed mixed failure mode between cohesive failure and adhesive failure occurred in all mixed adhesive variations.
STUDI EKSPERIMENTAL PEMISAHAN MINYAK-AIR MENGGUNAKAN HIDROSIKLON-BUBBLE GENERATOR Catrawedarma; Sari, Eli Novita; Fiveriati, Anggra; Wahid, Muhammad Abdul; Pamuji, Dian Ridlo; Syaifuddin, Muhammad
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.285

Abstract

This research aims to analyze the performance of oil-water separation using a hydrocyclone-bubble generator. The bubble generator used was an ejector type to make it easier to suck in atmospheric air. The research was carried out by injecting an oil-water mixture through a bubble generator before entering the hydrocyclone system. The air flow injected into the bubble generator was varied from 0.1-1.5 lpm. From experimental studies, it was found that as the air flow increased, the split ratio also increased. The pressure drop at the overflow increases gently while the underflow pressure drop increases significantly along with increasing input air flow. The greater the input air flow, the more significant the difference in underflow and overflow pressure drop. It has implications for a larger pressure drop ratio. The greater the air flow, the greater the overflow efficiency decreases, and the underflow efficiency increases. The highest efficiency in overflow is 87.77%.
PENGARUH PENGGUNAAN PASIR SILIKA DAN PASIR PANTAI TERHADAP KEKUATAN TARIK PADA PENGECORAN LOGAM ALUMINIUM Utomo, Wahyu; Sari, Eli Novita; Fiveriati, Anggra; Wahid, Muhammad Abdul; Pamuji, Dian Ridlo
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Casting is the process of manufacturing molten metal with a mold to produce a shape close to the original shape. The commonly used molding sand is mountain sand, river sand and silica sand. This research aims to analyze defects and tensile test results of castings with various types of sand (beach sand and silica sand) and types of aluminum (ADC 12 aluminum and aluminum from waste cans). The casting method used is traditional sand blasting. The results show defects in the form of surface hardness, rat tails, shrinkage cavities, and pinholes. The tensile test showed that the highest Ultimate Tensile Strength (UTS) value was obtained from a mixture of Al ADC 12 with beach sand with an average UTS value of 172.44 MPa.
PENGARUH PANJANG SERAT BAMBU PETUNG TERHADAP KEKUATAN MEKANIK DAN SIFAT FISIS KOMPOSIT YANG DISUSUN SECARA ACAK Umam, Khotibul Umam; H.D, Adityo Nor setyo; Listyanda, R Faiz
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.288

Abstract

Natural fiber composites are increasingly being developed to substitute less environmentally friendly materials such as metal and fiberglass. Petung bamboo has the potential to be a substitute for glass fiber in polymer composite reinforcement because it has good fiber quality. This research aims to determine the effect of random fiber arrangement with variations in fiber length on mechanical strength. The composite was made using the hand lay-up method with fiber length variations of 5 mm, 10 mm, 15 mm, and 20 mm. The volume fraction of petung bamboo fiber is 30% soaked in 5% NaOH for 2 hours. The research results show that specimen C has the highest tensile strength and elastic modulus values ​​of 1.25 Kgf/mm^2 and 1.93 Kgf/mm^2. In contrast, specimen A has the lowest tensile strength and elastic modulus values ​​of 0.76 Kgf/mm ^2 and 1.14 Kgf/mm^2. The rich, void, and fiber pull-out matrix causes the mechanical strength of the composite to be less than optimal. The effect of adding petung bamboo fiber in the composite can increase the mechanical strength as the fiber length increases.
PERANCANGAN POLA PENGECORAN CLAMPING CONNECTOR UNTUK LISTRIK TEGANGAN TINGGI Pradana, Angga Reyvaldi
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.290

Abstract

The development of casting patterns for clamping connectors in high-voltage electrical applications is the focus of this research. It aims to design products and patterns, produce prototypes, and test the casting process using sand casting techniques. The research methods include a literature review, CAD design, CNC prototype creation, and casting evaluation. Results show that the designed patterns were successfully implemented in the casting process. Tests indicate that the final product meets design specifications and functions well. Although mechanical durability measures like tensile or compressive strength are not included in this study, casting results have been evaluated for shape accuracy, surface quality, and pattern completeness. Further mechanical strength testing is suggested for future research.
ANALISIS VARIASI KEMIRINGAN SUDUT TURBIN SINGLE BLADE TERHADAP EFISIENSI DAN DAYA PADA ARCHIMEDES SCREW MENGGUNAKAN COMPUTIONAL FLUID DYNAMICS (CFD) Ahmad, shofiyuddin Ali; Fajarningrum, Nurmala Dyah; Iswahyudi, Sigit
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.291

Abstract

The potential for renewable energy in Indonesia is abundant, such as water energy. This energy potential can be used for Micro Hydro Power Plants (PLTMH). This study aims to study the effect of turbine head angle and screw angle parameters on the efficiency and power of screw-type water turbines. The angles used are turbine shaft angles of 20 °, 25 °, and 30 ° at screw angles of 22 ° and 26 °. Then a design was made using Autodesk Inventor and then simulated using Ansys software. The results of the study showed that the greatest power and the greatest turbine efficiency were obtained at a screw angle of 26 ° with a turbine shaft angle of 30 ° with a power value of 80072.98 watts and an efficiency of 95.37%. While the lowest power and efficiency were at a screw angle of 22 ° and a shaft angle of 20 ° with a power value of 72643.44 watts with an efficiency of 86.52%. So from this research, it was found that the good angle value is at the variation of the thread angle of 26° and the turbine shaft angle of 30°.
PERANCANGAN CETAKAN PERMANEN CLAMPING CONNECTOR UNTUK LISTRIK TEGANGAN TINGGI Kusuma, Andhika Aji
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.292

Abstract

This research focuses on the design of a clamping connector for high-voltage electrical systems using the permanent mold casting method. The design was developed using CAD/CAM software, with materials selected based on mechanical strength and temperature resistance. A prototype was created using CNC technology to ensure precision. The permanent mold design method was chosen to reduce production costs and improve efficiency without the need for welding processes. The results of the research indicate that this method produces clamping connectors that can be manufactured without the use of welding. The product design and permanent mold have been completed and are ready for production.
ANALISIS PEREKAT CAMPURAN SIKAFLEX-EPOXY TERHADAP KEKUATAN TARIK GESER PADA SINGLE LAP JOINT ALUMINIUM DENGAN VARIASI SURFACE PATTERN Dullah, Muhammad Firdaus Ubai; Hastuti, Sri; Salahudin, Xander
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 2 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i2.293

Abstract

Vehicle construction requires strong joints to connect various materials. Many connections are made by welding, riveting, and adhesive bonding. Adhesive bonding has the advantages of efficiency, corrosion resistance, and ease of application. This research aims to analyze the effect of using sikaflex (SK) - epoxy (EP) mixed adhesive on the shear tensile strength of single lap joint aluminum. The material used was aluminum 5083 and sika flex and epoxy adhesives with an adhesive thickness of 0.4 mm, as well as variations in surface pattern treatment. The results showed that the highest tensile strength and modulus of elasticity in the variation of 10% SK: 90% EP with surface pattern 90º cross-type amounted to 2.34 MPa and 79.29 MPa. The highest strain was in the variation of 30% SK and 70% EP composition with a 0º horizontal surface pattern of 0.0466. The failure modes that occur are cohesive failure and thin-layer cohesive failure.

Page 20 of 27 | Total Record : 267

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