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Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics)
Published by President University
ISSN : 25276212     EISSN : 25412876     DOI : -
Journal of Mechanical Engineering and Mechatronics merupakan jurnal keilmuan bidang teknik mesin dan mechatronics yang memuat tulisan-tulisan ilmiah mengenai penelitian-penelitian murni dan terapan serta ulasan-ulasan umum tentang perkembangan teori, metode dan ilmu-ilmu terapan terkait.
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Articles 105 Documents
Rancang Bangun Mesin Potong Logam Plasma CNC 3 Axis Fauzi Ridwan; Wahyono Sapto Widodo
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 8, No 1 (2023): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v8i1.3450

Abstract

CNC (Computerized Numerical Control) merupakan salah satu perkembangan teknologi permesinan yang digunakan dalam proses manufaktur dengan menggunakan kontrol terkomputerisasi sehingga dapat menunjang proses pembuatan suatu produk yang memiliki tingkat presisi tinggi, bentuk yang rumit serta tingkat kecepatan proses pembuatan yang relatif lebih cepat dibandingkan dengan permesinan pembuatan produk secara manual. Pada penelitian ini dihasilkan mesin potong plasma CNC dengan proses desain penentuan ukuran besaran mesin yang sesuai dengan kebutuhan perusahaan fabrikasi menengah, menggunakan bahan extrusion alumunium profile, besi siku dan besi hollow sebagai body dan frame mesin pada tiap axis karena jenis bahan ini sangat mudah untuk digunakan, menggunakan 1 unit stepper motor pada setiap axis (X, Y dan Z), metode pengaturan kerataan meja mesin menggunakan knob baut adjuster agar proses penyetingan kerataan meja mesin menjadi lebih cepat, penggunaan roda casters pada kaki mesin agar proses pemindahan posisi mesin lebih praktis, perancangan meja mesin agar bisa menampung air agar percikan spark proses pemotongan menjadi lebih aman, ditambah dengan sistem valve drain agar pengurasan air tampungan lebih mudah dilakukan. Selanjutnya rancangan mesin ini akan dijalankan dengan menggunakan perangkat lunak CNC Mach3 berbasis PC sebagai kontroller mesin karena penggunaan software Mach3 yang mudah untuk digunakan.
Tensile Behavior of SM520B-1G Plate by SMAW Joint Applied for Elevated Highway Road Construction Anggraini, Lydia
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 8, No 2 (2023): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v8i2.4748

Abstract

The main objective of this project is to study the mechanical and chemical characteristics of the SM520B welding plate used in the Jakarta-Cikampek Elevated Highway construction. The construction is needed to decrease the high volume of vehicles passing the highway every day. SM520B metal plate is used as the material in the girder box due to high strength and toughness and also good weldability.There are several tests conducted in the lab of PT Biro Klasifikasi Indonesia (Persero), i.e., spark OES test, tensile test, bending test, Charpy impact test, macro hardness test, and macro etch test. Spark OES test result shows that SM520B is low alloy steel with 0.165% carbon content. The SM520B tensile test result determines that the average yield strength, i.e., 503.45 N/mm², and the average tensile strength, i.e., 608.87 N/mm² of SM520B steel plate has met the requirement according to ASTM DS67B standard. The bending test result shows that no crack was found in the welding area. The Charpy impact test results of SM520B Welding plate indicates that high impact energy occurs in the welding area with the highest value of 214,24 J and slowly reduces when approaching close to the fusion line, i.e., 186.08 J. Higher Hardness Vickers value occurs in the HAZ area of SM520B during Vickers hardness, i.e., 235.8 J and the macro etch test result on the welding plate indicate there is no significant crack, porosity, and slag inclusion found in the welding.The main objective of this project is to study the mechanical and chemical characteristics of the SM520B welding plate used in the Jakarta-Cikampek Elevated Highway construction. The construction is needed to decrease the high volume of vehicles passing the highway every day. SM520B metal plate is used as the material in the girder box due to high strength and toughness and also good weldability.      There are several tests conducted in the lab of PT Biro Klasifikasi Indonesia (Persero), i.e., spark OES test, tensile test, bending test, Charpy impact test, macro hardness test, and macro etch test. Spark OES test result shows that SM520B is low alloy steel with 0.165% carbon content. The SM520B tensile test result determines that the average yield strength, i.e., 503.45 N/mm², and the average tensile strength, i.e., 608.87 N/mm² of SM520B steel plate has met the requirement according to ASTM DS67B standard. The bending test result shows that no crack was found in the welding area. The Charpy impact test results of SM520B Welding plate indicates that high impact energy occurs in the welding area with the highest value of 214,24 J and slowly reduces when approaching close to the fusion line, i.e., 186.08 J. Higher Hardness Vickers value occurs in the HAZ area of SM520B during Vickers hardness, i.e., 235.8 J and the macro etch test result on the welding plate indicate there is no significant crack, porosity, and slag inclusion found in the welding.
Study of Peak Current Wire-cut EDM on Surface Morphology With Integration CAD/CAM in The Manufacturing of Chain Components Habiby, M. Nuril Anwar
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 8, No 2 (2023): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v8i2.4665

Abstract

In this increasingly modern era, science and technology (IPTEK) is growing rapidly, one of which is progress in the manufacturing industry sector to produce a product. The machining process that is often used today is Wire Electrical Discharge Machining (WEDM). This machine began to be widely used because it is able to cut workpieces quickly, with good efficiency, and with accurate dimensions. This study aims to study the effect of variations in the use of peak current parameters in the WEDM cutting process by using integration between CAD/CAM software to create programs for manufacturing chain components. Then in the process of cutting the material will be given a variation of peak current treatment to determine the surface morphology. The software used for CAD is Autodesk Inventor Profesional 2015 and the CAM uses the Mastercam X4 application. While the peak current variations use 8, 10, 12 A. The results show that software integration is between Autodesk Inventor Profesional 2015, then the image results are exported to the Mastercam X4 application and can be run on WEDM machines. In addition, the surface morphology images obtained show striking differences with different peak current variations. At high peak currents of 10 and 12A the number of craters produced is larger than the craters at a low peak current of 8A. Besides that, the debris produced on the surface morphology with a higher peak current has a larger size with a greater amount.
Alat Pengering Biopelet Tipe Rak Dengan Daya 500 Watt Kamal, Dianta Mustofa; Heryana, Ghany
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 8, No 2 (2023): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v8i2.4783

Abstract

Drying of biopellets is currently still using the conventional method, namely by drying directly under the hot sun. This method is not optimal when the weather is rainy or cloudy, and requires a large area of land. Based on these problems, the purpose of this study was to test the performance of the biopellet dryer and determine the drying time to reach the moisture content in accordance with SNI 8021:2014. The test was carried out by drying 5.000 grams of biopellet samples and seeing the average of the final mass. The average final mass of each test sequentially is 4,785 grams, 4,581 grams, 4,385 grams, 4,016 grams, 3,804 grams, and 3,595 grams. The reduction in water content obtained within 180 minutes was 28.12% with the initial water content in biopellets of 40%. The total water content obtained from the drying is 11.88%. Performance of the biopellet dryer with the power used by this biopellet dryer is 500 Watt. Capable of drying 5.000 grams biopellet with an initial moisture content of 40%. Room temperature is 120°C with a drying rate of 468.667 Gram/hour. Dry biopellet within 180 minutes with a moisture content of 11.88% according to the standard of SNI 8021:2014.  Keywords: Biopellet Drying, Dryer, Moisture Content, Power
ANALISIS PENGARUH PERBAIKAN KEBOCORAN DENGAN PLUGGING TUBE TERHADAP KINERJA HPHEATER Sasongko, Dian
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 8, No 2 (2023): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v8i2.4682

Abstract

Abstrak. High Preasure Heater yaitu Penukar panas dirancang sebisa mungkin agar perpindahan panas antar fluida dapat berlangsung secara efisien .High Pressure Heater pada Power Plant PLTU  PT. Indorama Polychem Indonesia Unit 3 berfungsi sebagai pemanas awal air pengisi boiler. Pada HP Heater terjadi perpindahan kalor antara feedwater dan uap ekstraksi dari Intermediet Turbin (Bled Steam). Keberadaan HP Heater pada sistem PLTU diharapkan dapat menambah efisiensi PLTU secara keseluruhan. Akan tetapi kebocoran yang terjadi pada HP Heater menyebabkan terdapat banyak tube yang di plug sehingga perpindahan kalor yang terjadi tidak maksimal. Plugging yaitu proses penutupan atau penyumbatan sisi inlet dan outlet pada tube yang bocor agar feedwater tidak dapat mengalir melewati tube, batas toleransi yang diizinkan untuk plugging High Pressure Heater yaitu 15% dari jumlah tube. Adanya penutupan tube akibat adanya kebocoran / plugging tube pada HP Heater  sebesar 15 % dari total 112 tube . Terjadi penurunan temperatur  outlet karena perpindahan panas menjadi tidak maksimal sehingga berefek pada kerja boiler menjadi lebih besar dan bahan bakar menjadi semakin banyak. Efektivitas HP heater secara system turun sebesar 34.43 % dari kondisi desain. Metoda efektivitas NTU shell and tube naik menjadi 0.7676 karena dipengaruhi adanya penurunan water  flow massa pada tubing dengan penurunan sebesar 2.95 kg/s. Terjadi penurunan efisiensi perpindahan panas sebesar 34.4 %  dari 99.9 % karena terdapat luas perpindahan panas yang berkurang. Secara sistem menjadi tidak efektif karena banyak panas yang tidak tersalurkan pada air di dalam tubing akibat plugging tapi masih bisa digunakan secara operasional
Electrical Design and Construction of 3 Axis CNC Plasma Metal Cutting Machine Zain, Khairil
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 8, No 2 (2023): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v8i2.3509

Abstract

Abstract. Computerized Numerical Control (CNC) is one of the developments in machining technology that is operated automatically which can support the demand for a product that has a complex shape, high accuracy and can work on objects that cannot be done with conventional machining. The design of the CNC 3 Axis machine is carried out with a design process to determine machine dimensions, determine calculations to determine motor requirements specifications. Followed by electrical wiring design to select the specifications of the controller used, and continued with testing the precision of the tool when testing the tool. The results of the design of this tool use Mach3 software as a machine controller and use a stepper motor as a motor drive. 3 Axis (X, Y and Z) Plasma CNC Machine (WCM) Design Using a Mach3 PC Base Stepper Motor that the controller system using Mach3 software has easy configuration because there is an auto tuning feature on each axis to determine distance precision. Using Mach3 software does not require a lot of cost because it can be downloaded on the internet.Keywords: CNC, Fabrication, Plasma Cutting Machine, Design and Build, Mach3
CFD Analysis Of Wind Turbine For 10 MW Electrical Power Generator In East Nusa Tenggara Sutisna, Nanang Ali
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 8, No 2 (2023): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v8i2.4787

Abstract

Electrical energy has a vital role in daily human activities. The energy sources currently used in a generation are non-renewable energy sources. Wind energy is a renewable energy source that can be utilized as mechanical or electrical energy through a conversion called the Wind Energy Conversion System. In wind power plants, a somewhat important component is a wind turbine; the wind will drive the turbine and generate electricity from the generator. This study analyzed the suitability of turbine designs to be applied to wind power plants in East Nusa Tenggara, especially in three areas with a reasonably high wind potential compared to the surrounding area. Selection of appropriate wind turbine for electrical power generation in East Nusa Tenggara is the first phase of the study, it compared two wind turbine designs, namely Horizontal Axis Wind Turbine (HAWT) and Vertical Axis Wind Turbine (VAWT). Followed by analyzing the performance of the selected turbine using secondary data and analysis software, namely Ansys, to determine the torque generated by the wind turbine under study. The simulation results showed that the Horizontal Axis Wind Turbine produced power of 259.491 kW at a wind speed of 5.86 m/s and 271.447 kW at a wind speed of 6.13 m/s. Based on the results, the Horizontal Axis Wind Turbine needed for generating 10 MW is 56 units.
Karakteristik Hasil Co-Pyrolysis dari Limbah Plastik dan Oli Bekas Kamal, Dianta; Heryana, Ghany
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 9, No 2 (2024): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v9i2.5482

Abstract

This study aims to utilize low-density polyethylene (LDPE) plastic waste and used engine oil to produce alternative liquid fuel through the co-pyrolysis method. The co-pyrolysis process was carried out with various ratios of LDPE plastic waste and used engine oil, specifically 5:0, 5:1, 5:2, 5:3, and 5:4, within a temperature range of 165°C to 177°C for 1 hour. The characteristics of the resulting liquid products were tested to determine their calorific value, density, and viscosity. The results showed that the calorific value increased with the addition of used engine oil, reaching 11,061.67 cal/g at a 5:4 composition. The liquid products had an average density of 0.8686 g/mL, which was within the range of diesel fuel density. The viscosity of the liquid products also met gasoline standards, with an average value of <1 cSt. The highest yield efficiency reached 9.14 mL/kWh at a 5:4 composition with an efficiency of 1.93%, indicating significant potential in producing energy-efficient liquid fuel. This study sheds new light on the use of plastic waste and engine oil as environmentally friendly alternative liquid fuels.
Crack Analysis of Polyoxymethylene Reinforce Glass Fibre Material on Locker Table Nidhar, Ainun; Auberta, Genia; Dewi, Anissa Puspa; Heryana, Ghany
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 9, No 2 (2024): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v9i2.5488

Abstract

Polyoxymethylene (POM) is a type of thermoplastic that is frequently used in various industrial applications due to its good dimensional stability, corrosion resistance, and superior tensile strength. However, in certain applications such as locker tables, the weakness of this material is revealed in structural failures. This research uses the finite element simulation method to analyse the failure of a locker table exposed to a helical torsion spring. The main focus was on the fracture of the part connected to the helical torsion spring, a common problem in plastic material applications subjected to cyclic loading. Results showed that the fracture occurred at a stress level of 121.061 MPa, exceeding the yield strength value that should have been broken at 150 MPa. In addition, the analysis showed that the highest Von Misses stress occurred where the spring was located, exceeding the specified yield strength. Tensile tests showed the effect of ambient temperature on the tensile strength of the POM+25%GF material. The proposed solution through the development of an additional structure in the form of ribs on the product successfully increased the strength of the locker table under load. This research provides important insights in improving product design to minimise the risk of structural failure in POM+25%GF material.
CFD ANALYSIS OF OFFSHORE HAWT BASED ON WIND SPEED PROFILE AT 50 METERS ALTITUDE IN THE SOUTHERN WATERS OF UJUNG PANDANG, SOUTH SULAWESI Sutisna, Nanang Ali; Ritonga, Yehezkiel Kusmadi
Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Vol 9, No 2 (2024): Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mecha
Publisher : President University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33021/jtmm.v9i2.5534

Abstract

Offshore wind turbines have many advantages over onshore wind turbines, with better wind speeds, fewer spatial constraints, and decreased visual and noise effects in densely populated areas. Indonesia's onshore wind energy potential for wind speeds exceeding 4.0 m/s is 60.65 GW. Moreover, Indonesia's offshore wind energy ability for wind speeds exceeding 6.0 m/s is 94.23 GW. Consequently, wind speeds in offshore regions are more promising than onshore areas, which can notably enhance renewable electricity generation and reduce the usage of fossil fuels. This research is conducted by modeling the 3D HAWT design in 2 domains, Stationary and Rotational, which will be combined in one interface. The simulation results indicate a significant increase in turbine performance parameters with increasing wind speed. It also successfully modeled the interaction between wind flow and the turbine, as shown in the velocity contours that display higher wind speed distribution at the blade tips and in the pressure contours that show higher pressure distribution on the front side of the blades and on the side of the blades relative to the direction of rotation

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