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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 DAN SIMULASI KINERJA (DAYA DAN EFISIENSI) PADA SUDU TURBIN ANGIN SAVONIUS VERTIKAL TIPE U DENGAN SOFTWARE sidiq, akhmad; Subagyo, Tulus
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.v10i2.264

Abstract

Increased energy needs and environmental concerns have encouraged exploration of renewable energy sources. The research was to analyze savonius' performance and design of wind turbines as an alternative to electricity generation. Wind velocity measurement in turbines is used in anemometers, as well as in their effects on energy generation potential. In design, the study analyzes the level u wind turbine framework of dimension, geometry, voltage distribution, and material resistance. A structural and safety factor calculation is done to ensure that the turbine frame can support an anticipated load without failure. In this study computes the power extracted from the wind through the turbine. From this study produce 26.6 joules of kinetic energy and a 9.60 watt output output at an efficient rate of 5.28%.
EFEKTIVITAS BRIKET KULIT PINANG TERHADAP PENURUNAN NILAI KADAR AIR DAN NILAI DENSITAS Rani Saputri; Jumiati, Ety; Sirait, Ratni
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.v10i2.267

Abstract

Utilization of briquettes as an alternative biomass energy source is possible. Biomass is a renewable energy source that is becoming increasingly important throughout the world. This has the potential to reduce human dependence on fossil fuels. This research aims to determine the effectiveness of reducing the water content and density values of areca nut shell briquettes. The raw materials used in making briquettes are areca nut shells and arpus adhesive, with each percentage of material and adhesive composition, namely sample A (55% : 45%), sample B (60% : 40%), sample C (65% : 35%), and sample D (70% : 30%). The results of this research obtained a water content value of 6.36% - 4.82% and a density value of 0.534 g/cm3 - 0.599 g/cm3. This water content value meets SNI 01-6235-2000 regarding wood charcoal and these briquettes are suitable to be used as a substitute for charcoal on a household scale.
PENINGKATAN KUALITAS NILAI KADAR AIR DAN KADAR ZAT TERBANG PADA SERBUK KARBON AKTIF TEMPURUNG KELAPA DENGAN VARIASI SUHU AKTIVASI Siti Putri Masyitah; Jumiati, Ety; Sirait, Ratni
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.v10i2.268

Abstract

This research aims to determine the characteristics of coconut shell activated carbon in powder and granular form using quantitative methods. Making activated carbon consists of preparation, carbonization and activation. Then the physical properties were tested and the analysic. Actived carbon is made through a carbonization stage at a temperature of 400°C for 2 hours and activation at a temperature of 800°C, 900°C, and 1000°C for 1 hour. The parameters used are air content and volatile substance content with active carbon quality requirements based on SNI No. 06-3730-1995. The research results showed that the best quality powdered activated carbon at a temperature of 1000°C with an air content of 6.4% and a volatile matter content of 15.2%
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.

Page 25 of 27 | Total Record : 267

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