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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 KONSUMSI DAYA DAN LAJU ALIRAN MASSA PADA PROSES DAUR ULANG LIMBAH SAMPAH PLASTIK MENGGUNAKAN MESIN INJECTION MOLDING Kismanti, Shinta Tri; Firdan, Muhammad; Backhris, Muhammad; Lissa, Hermei
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 2 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i2.269

Abstract

The injection molding machine in this research is a vertical injection machine that is capable of processing chopped plastic bottles for drinking water into more useful products. The temperature required for HDPE plastic waste is 300℃ and requires 1035 Watts of power, while PP plastic waste uses a temperature of 164℃ with a power of 957 watts. The melt flow rate for HDPE type waste is 0.58 ?⁄? while for PP type waste it is 0.59?⁄? so there is a difference of 0.1 ?⁄?.
UJI EKSPERIMENTAL PENGARUH VARIASI PENAMBAHAN ZEOLIT PADA PEMBUATAN BAHAN BAKAR ALTERNATIF DARI OLI BEKAS DENGAN METODE DESTILASI Imron, Imron Musthofa; Rusuminto Syahyuniar; Kurnia Dwi Artika; Hajar Isworo; Reza Taufiqi Ivana
ELEMEN : JURNAL TEKNIK MESIN Vol. 10 No. 2 (2023)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v10i2.270

Abstract

Used oil waste increases every year, engine maintenance waste will increase. Waste oil is classified as B3 waste which requires special treatment. In the development of cities and regions, the amount of fuel used continues to increase due to the increasing number of vehicles and car engines. Even in rural areas, you can find small companies, one of which uses oil. In other words, the distribution of palm oil waste is very wide, ranging from big cities to rural areas in Indonesia. The research process was to convert used oil into constant-temperature heating oil by using a distillation process. The method used aims to find out the best results at temperatures and variations of the zeolite catalyst. 350oC produces 1005 ml of fuel in 90 minutes. While the lowest results were obtained without using a zeolite catalyst to produce 105 ml of fuel. Thus, the use of zeolite is easy and effective in weakening the bonds of the hydrocarbon chains in the oil.
PENGARUH PENAMBAHAN STP COOLER PADA AIR NON COOLANT TERHADAP TEMPERATUR MESIN Sukri; Syamsuddin, Usman; Merpatih; Musthofa, Imron; Kasmawati
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.271

Abstract

In general, the engine when running must be in a stable condition. So it is necessary to keep the engine temperature cool during operation, this is very important so that performance is maintained and power is not sluggish. One way is to use a cooler, adding STP Cooler to non-coolant water will certainly reduce engine temperature. The purpose of this study was to determine the effect of using STP Cooler on engine temperature when using plain water and a mixture of plain water and STP Cooler. The method used in this study was to test at 3 variations of engine speed, namely 1000 rpm, 1500 rpm and 2000 rpm. The results obtained show that the average temperature of the engine when using plain water at 1000 rpm engine speed is 65 oC, at 1500 rpm engine speed the temperature is 70 oC, and at 1500 rpm engine speed the temperature is 78.3 oC, while the average temperature when using a mixture plain water with STP Cooler at 1000 rpm rotation the temperature is 70.6 oC, , at 1500 rpm rotation the temperature is 75.3 oC, and at 2000 rpm rotation the temperature is 81 oC, . From the test results it can be concluded that when using ordinary water the average temperature is still lower than when using a mixture of ordinary water and STP Cooler.
PERANCANGAN ALAT PEMBELAH KELAPA DENGAN DUA MATA PISAU Zainuddin; Azmy, Ilham; Fhaisol, Muhammad Iqbal; Londa, Petrus
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.272

Abstract

Coconut is massively consumed by people due to its high nutrition. The coconut splitting process usually conventionally performed by empty-handed which tends to high time-consumed and less safety. In this work, coconut splitter was successfully designed by involving tool concept planning, part elements designation, and tool assembly. Tool concept planning consists of design formulation, calculation and selection of machine elements such as frame, splitting cutter, belt, pulley, shaft, and prime motor. The design process was carried out by using computer-aided design Solidworks. The design result has dimension of 860x760x700 mm with two cutters feature using circular saw and wheel which inserted to transmission system V-belt and pulley driven by motor of 2,6 kW with velocity of 332 rpm to achieve 600 pieces coconut splitting per hour. The design of coconut splitter is highly expected to enhance productivity and safety while coconut splitting process.
PENGARUH JARAK PELAPISAN PADA PROSES THERMAL SPRAY ALUMINIUN (TSA) TERHADAP KEKUATAN IKATAN COATING DAN KETEBALAN LAPISAN PADA BAJA AISI 1020 Ismail, Pitrah Rapi; Sri Hastuti; Catur Pramono; Nurhadi Nurhadi; Wibowo, Rheza Ari; Akhmad Nurdin; Hassany, Ibnu Rosyid Al; Bramono Pandu
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.275

Abstract

Thermal spray arc is a familiar coating method used around 100 years ago. This coating technique was chosen to reduce damage and improve the surface quality of materials with coating bonds that are in direct contact with extreme marine environments. The minimum thickness of the TSA coating is around 100 – 500 µm. According to NACE/AWS/SSPC, a coating layer submerged in seawater will lose 20 µm every year, for a minimum bond strength of 6.89 Mpa. The research aims to analyze the effect of coating distance on AISI 1020 steel. The tests carried out are dry film thickness, pull of adhesive, and bending tests. This research uses distance variations of 150 mm, 250 mm, 350 mm. The research results show that the use of distance has an effect on the bond strength of the layer and the substrate. The best bond strength and bending ability values ​​were found at a distance of 350 mm, with a coating strength of 10.81 Mpa and no bending cracks. Increasing distance variations in the thermal spray process increases bond strength and bending ability.
PENGARUH DIAMETER PIPA NOZZLE PADA KINERJA TURBIN AIR PELTON SKALA LABORATORIUM Syaief, Adhiela Noer; Isworo, Hajar; Ivana, reza Taufiqi; Putra, Muhammad Rezki Fitri; Yasin, Muhammad Noor
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.276

Abstract

Pelton turbine is an energy conversion medium that utilizes flow performance as a driver and produces electrical energy due to the conversion of turbine rotation. The turbine works when the turbine nozzle injects flow towards the tip of the nozzle which leads directly to the inlet surface of the turbine blade. In this research, we know the effect of nozzle diameter on the performance of turbines that produce different electrical power from various parameters, namely: nozzle diameter used; 1", ¾", 1 ½", and ½" with various nozzle opening variations of 20%, 50%, and 100%. The results obtained with a nozzle diameter of ¾" obtained maximum results with a rotation of 177 (rpm), with a power of 5,168 watts and efficiency increased to 5% at each nozzle valve opening. From these results it can be said that the magnitude or size of the nozzle influences the performance of the turbine where the efficiency of the performance is directly proportional to the rotation and power produced.
ANALISIS KEKUATAN BUTT JOINT PENGELASAN SMAW PADA MATERIAL ST-37 DENGAN VARIASI ELEKTRODA DAN KECEPATAN PENGELASAN Pamungkas, Deni; Hastuti, Sri; Taufik, Ikhwan
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.277

Abstract

Shield Metal Arc Welding (SMAW) welding in practice often faces challenges in the form of defects in the joints which damage the quality of the connection. One implementation of welding connections is the process of making a paddock. Poor welding can damage the paddock and harm its users. The research aims to determine the effect of welding speed and electrodes on the tensile strength, hardness and microstructure of ST-37 steel welded joints. The research used AWS E 7016 and AWS E 6013 electrodes with a current of 100 amperes and varying welding speeds of 0.2 cm/s, 0.3 cm/s and 0.4 cm/s. The highest tensile strength for the AWS E 7016 electrode was 460.32 MPa and the lowest for the AWS E 6013 electrode was 256.02 MPa. The highest hardness value on AWS E 7016 was 236.07 MPa and the lowest was on AWS E 6013, amounting to 176.86 MPa. The ferrite composition dominates the weld metal. Because ferrite is ductile and not too hard, it means that the weld metal area is ductile and the hardness is not too high.
ANALISIS PENGELASAN KOMBINASI GMAW DAN FCAW PADA BAJA ASTM A36 TERHADAP SIFAT MEKANI Manta, Faisal; Wiguna, Ahmad Zulfikar Patria; Pratama, Kafinra; Haliq, Ridwan
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.278

Abstract

A36 steel as raw material for heavy equipment attachments, such as blades and buckets. Gas Metal Arc Welding (GMAW) and Flux-Cored Arc Welding (FCAW) are used for the connection. High heat input and weld metal protection mechanisms are suitable for joining thick plates, however, in the field, malfunctions were found due to damage to the weld joint. To overcome this problem, research was carried out on two welding techniques to obtain optimal joint strength values. The research uses GMAW, FCAW and combination welding to join A36 steel with a V-beam angle of 60°. On the welding results, Magnetic Particle Inspection (MPI) and bending tests will be carried out. MPI testing states combination welding meets the requirements of the AWS1015 standard. The highest bending strength in FCAW welding was 160,419 MPa and the lowest in GMAW was 71,724 MPa, while combination welding was 113,312 MPa. The difference in value is influenced by the phases formed from each welding method visible in the microphotographs in the weld metal, HAZ and base metal areas.
PENGARUH VARIASI DESAIN SUDU TERHADAP KARAKTERISTIK HIDRODINAMIKA TURBIN AKSIAL VORTEX ULTRA LOW HEAD MENGGUNAKAN METODE CFD Khanif, Masnurojak Bin; Rahman Saleh, Arif; Fajarningrum, Nurmala Dyah; Sulistiyo, Raka Mahendra
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.279

Abstract

Renewable energy is being developed by many advanced countries due to its positive impacts. Indonesia has a high potential for hydropower generation using axial vortex turbines, which are effective at low head heights. Researchers use experimental methods, employing CFD simulations with specific boundary conditions. In one blade variation, testing was conducted 18 times with speed variables (20, 40, 60, 80, 100, 120 RPM) and blade angles of 22.5°, 35°, 40°. Torque data was collected after achieving convergence. The results showed the highest torque at 22.5° blade angle and 80 RPM speed, amounting to 2.4 N.m, and efficiency of 57.90% at 120 RPM. Researchers concluded that the decrease in torque is caused by the increase in vortex flow, reducing interaction between the blade and fluid after 80 RPM, while the increase in torque before 80 RPM is due to minimal swirling in the basin.
RANCANG BANGUN TURBIN ANGIN SAVONIUS MENGGUNAKAN VARIASI SILINDER PENGGANGGU Syahyuniar, Rusuminto; Putra, Muhammad Rezky Fitri; Musthofa, Imron; Artika, Kurnia Dwi; Iranto, Roma
ELEMEN : JURNAL TEKNIK MESIN Vol. 11 No. 1 (2024)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v11i1.280

Abstract

Turbin angin Savonius sebagai alternatif sumber energi terbarukan. Turbin angin Savonius dirancang dengan prinsip kerja yang sederhana, efektif dalam menghasilkan energi listrik pada kecepatan angin rendah, dan mudah dalam perawatan. Tujuan dari penelitian ini adalah untuk merancang dan membuat turbin angin Savonius dengan memiliki efisiensi yang tinggi. Metode yang digunakan adalah metode ekperimental, pengumpulan data, perancangan turbin, pembuatan prototipe, dan pengujian. Pengujian dilakukan dengan mengukur putaran turbin dan menghitung rpm yang dihasilkan pada berbagai kecepatan angin dengan silinder pengganggu dan tanpa silinder pengganggu. Hasil penelitian menunjukkan bahwa desain turbin angin Savonius menggunakan material alumunium 6061 dengan jumlah 2 blade, tinggi blade 500 mm, diameter 722 mm. Pada kecepatan angin rendah 3 – 5 m/s blade dapat berputar untuk menggerakkan generator dan menghasilkan energi listrik, menggunakan power inverter dapat menghasilkan listrik 220 volt. Pengujian tanpa hambatan menghasilkan posisi ideal adalah jarak 0,5 meter dengan kecepatan angin sebesar 4,5 m/s menghasilkan 91 putaran permenit dan 93,7 rpm. Pengujian pengaruh variasi silinder pengganggu menghasilkan jarak ideal posisi silinder pengganggu adalah 20 cm, pengaruh silinder 4 dengan ukuran diameter 85 mm menghasilkan 73 putaran permenit, 91,2 rpm dan pengujian dengan beban generator menghasilkan kecepatan angin ideal dengan kecepatan angin 4,5 m/s dan jarak 0,5 meter menghasilkan 64 putaran permenit, 86,5 rpm dan 9,1 volt .Simulasi blade displance atau perubahan bentuk pada saat terkena angin menghasilkan nilai maksimal 0,07548 mm dan simulasi blade mises stress atau beban titik tumpu dengan nilai maksimal 3,561 MPa. Dari simulasi fluid dengan kecepatan angin 4 m/s dengan streamline 3,8 s/d 5,8 m/s.

Page 19 of 27 | Total Record : 267

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