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Jurnal Teknik Mesin Sinergi
Published by Politeknik Negeri Ujung Pandang
ISSN : 16931548     EISSN : 26849372     DOI : http://dx.doi.org/10.31963/sinergi
Core Subject : Science, Engineering,
Energy Mechanical Engineering
Jurnal Teknik Mesin Sinergi Politeknik Negeri Ujung Pandang mempublikasikan hasil penelitian pada Bidang Teknik Mesin dan Energi.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 18 Documents
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Search results for , issue "Vol 20, No 1 (2022): April 2022" : 18 Documents clear
Rancang Bangun Alat Cetak Material Komposit Dengan Sistem Tekan Muhammad Arsyad Suyuti; Arthur H. Razak; Pria Gautama; M. A. Murtadha; D. H. Wahyuningsi; Wiranto Wiranto
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (835.185 KB) | DOI: 10.31963/sinergi.v20i1.3485

Abstract

The use of composite materials is growing rapidly because it’s have several advantages including easy to form, low density, and abundant availability. This matter encourages composites as substitute metals in various products. The purpose of this research is to make a press tool to form composite panel. The research method is carried out through several stages. The first stage, namely the design process by making sketches or drawings of press tools using Autodesk Fusion software. The second stage is the manufacturing process; components that are not standard were made by machining processes as needed refer to drawings design. The third stage, namely the assembly process, combining each component into a mutually supportive form as planned. The last stage is testing the press tool. At this stage the press tools equipment was tested by pressing eceng gondok (Eichhornia crassipes) fiber to become composite panels. Press tools can make composite panels with thicknesses ranging from 3.67 mm until 4.4 mm. The size of the composite panel follows the size of the mold.
Rancang Bangun Mesin Ektrusi Pembuat Filamen dengan Sistem Screw Conveyor Rusdi Nur; Nursyahbani P Parahdiba; Ikhlas Abdullah; Dimas F Roji; Sitti Sahriana; Ilyas Mansur
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (879.334 KB) | DOI: 10.31963/sinergi.v20i1.3433

Abstract

Plastic extrusion machine is a tool to carry out the process of extrusion or formation by utilizing plastic blockage by using high temperatures for the process of melting and reshaping with mold into a certain form, where the drive used in the extrusion machine is a power thread formed in such a way as to be able to conduct or move the material. Extrusion machine made with the principle of horizontal shape and use screw conveyor as a material drive in the extrusion process. Extrusion Machine uses HDPE pellets as a test material to print filaments with a attached specification of 31.81 rpm of speed and 915 watt of element band heater power. The process of designing an extrusion machine with the screw conveyor was using standard flight or standard blade, on the grounds that the screw or thread only serves to move the material to the end of the nozzle. The screw conveyor size is 500 mm long, screw diameter is 50 mm and the distance between pitches is 25 mm followed by the dimensions of the machine is 800 x 400 x 600 mm. The test results were conducted using HDPE polyethylene pellet material with variable temperature variations consisting of 5 types of temperature, namely, 120 ° C, 110 ° C, 110 ° C, 95 ° C and 90 ° C, form the five variables above we conducted trials on each temperature. Then we got it and we concluded that the experiment using the temperature variable of 100 ° C has the most optimum output results, where the temperature of 120 ° C and 110 ° C has a liquid output result then the temperature of 90 ° C and 95 ° C has a condition where the material dries too quickly and make the nozzle clogged.
Pengaruh Variasi Suhu dan Waktu Pada Proses Nitridasi Terhadap Perubahan Sifat Mekanis Baja St 40 Trisbenheiser Trisbenheiser
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (359.964 KB) | DOI: 10.31963/sinergi.v20i1.3474

Abstract

This research aimed to determine the changes of strength, micro structure, and wearing out of  St 40 after nitriding process using the urea fertilizers as the sourcse of nitrogen. In this research, the process of nitridation was carried out using the variation of temperature of 4500C, 5000C, and 5500C, and the variation of endurance time of 1 hour, then 3 hours, and 5 hours. The experiment results indicated that the highest hardness value of the steel ST 40 at the temperature of 5500C were consecutively for the endurance time of 1 hour, 3 hours, and 5 hours were 115,46 HB, 116,30 HB, and 116,51 HB.  The increase in the surface hardness of the specimen is affected by the increase in temperature and holding time. Meanwhile, the results of the smallest wearing out of the steel ST 40 at temperature of 5500C with the endurance time 5 hours were consecutively at the wearing out time of 60 minutes, 90 minutes, and 120 minutes were 0,38 mm3/ minute, 0,44 mm3/minute, and 0,57 mm3/minute. The value of the wearing out on the specimen is affected by temperatue and holding time during nitriding.  As for the results of the obsevation using the microscope at the micro structure of stell St 40 after undergoing nitiridation, showed an increase of number of fasa perlite at the specimen surface, the higher the heating temperature the more the fasa perlits formed, this is directly roportional with the hardness of the specimen surface.The fasa perlite formed has better hardness than of fasa ferrite.
Modifikasi Prototipe Robot Pelontar Pakan Ikan dan Sistem Monitoring Level Air pada Tambak Muslimah Widyaningrum; Gusti Rangga; Abdul Kadir Muhammad; Mukhtar Mukhtar
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (385.8 KB) | DOI: 10.31963/sinergi.v20i1.3416

Abstract

Fisheries are one of the sectors that are relied upon for national development. In 2019, the export value of Indonesian fishery products reached Rp. 73,681,883,000, which is an increase of 10.1% from 2018 exports. Marine products such as shrimp, tuna, squid, octopus, crabs and seaweed are sought-after commodities. The development of fish farming can be carried out if the availability of good quality seeds and available in sufficient quantities, proper feed, prevention and treatment of disease and a good living environment. The survival rate at the seed stage is influenced by the type of feed given and the amount according to the needs of the fish. This study aims to modify the previous feed throwing robot so that it can be thrown further and the feed is not destroyed so that it can help the work of fish pond farmers in providing fish feed, modify the tool to help fish pond farmers work in knowing the pond water level, design and build a filling system. manually and automatically using solar panels and modifying the information system on the previous tool so that it can display more information to fish pond farmers. The results showed that the ideal distance of feed throw 5.1 meters, and maximum charging using solar panels 14.28 Watts per hour. The feeding system, water level regulator, information system and charging system can facilitate the pond management process
Rancang Bangun Sistem Kontrol Suplai Beban PLTS Menggunakan Pulse Width Modulation dan Real Time Clock Andareas Pangkung; Shiti Qamariah; Sukma Abadi; Nur Intan Mayasari
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (642.719 KB) | DOI: 10.31963/sinergi.v20i1.3452

Abstract

The increasing need for energy makes people prefer to develop alternative energy. The sun is the main source of energy to the earth's surface. In sunny weather conditions, solar energy is about 1000 Watt/m2. The cheap source of solar energy causes many parties to use its energy, one of which is for street lamp lighting. The limited time of the sun to produce energy must be make solar energy is stored in batteries so that it can be used at night. However, the battery also has limitations in storing energy which results in less efficient use of PLTS. Therefore, it is necessary to adjust the loading using a controller that is able to regulate how much energy the battery must release according to the needs at that time so that there is no more wasted battery expenditure. With this controller, alternative energy will be used more efficiently. Making the tool begins by looking for some reference components that are capable of being the main material, then doing assembly and continuous testing of the tool to see if the controller runs as desired. It is hoped that this tool can be applied on roads and other places that require load supply regulation. The test results during the tool making process prove that the presence of a load supply regulator controller makes the battery more efficient to use
Analisis Kinerja Pengering Surya Tipe Rak Menggunakan Heat Absorber Pelat Gelombang dengan Aliran Udara Natural Jamal Jamal
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (303.843 KB) | DOI: 10.31963/sinergi.v20i1.3414

Abstract

The current study aims to determine the performance of a rack-type solar dryer. The solar dryer uses a heat absorber in the form of a large wave plate and a small wave which is placed in the solar collector room. The dried material is cassava. The system used is natural air flow due to density differences. The research was carried out by making two rack-type solar collectors, the difference being the heat absorber used, one large wave and the other small wave. The test was carried out simultaneously between the two solar dryers. In this study, the results of large-wave solar dryers with an average efficiency of 9.24% had a better performance than small-wave solar dryers with an average efficiency of 7.68%. In the large wave solar dryer, the average efficiency on rack 1 is 1.33%, on rack 2 is 3.83% and on rack 3 is 5.93%. In the small wave solar dryer, the average efficiency on rack 1 is 1.50%, on rack 2 is 3.88% and on rack 3 is 2.30%.
Rancang Bangun Prototipe Pembangkit Listrik Tenaga Mikrohidro Menggunakan Turbin Pelton Chandra Bhuana; Tasrif Tasrif; Muhammad Ruswandi Djalal; Nurul Andini; Muhammad Aldy Rezaldy
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (572.191 KB) | DOI: 10.31963/sinergi.v20i1.3482

Abstract

Water energy can be used as a power plant by utilizing the available potential energy (waterfall potential and flow velocity). The water turbine is one of the driving machines where the working fluid is water which is used directly to rotate the turbine runner and turbine generator to produce electrical energy. This research was conducted using a Pelton type water turbine installation and measurements were made of turbine and generator rotation, flow rate, electric voltage and electric current with variations in the position of the nozzle angle. The research method used is a laboratory-scale experimental method and the results of the design of the water turbine are used as a practicum tool for students of the Department of Mechanical Engineering, Energy Generation Engineering Study Program. The results showed that there was an effect of the position of the nozzle angle on the performance of the PLTMH prototype using a Pelton turbine, in this study the nozzle position will be designed at an angle of 00,450,600, and 750.
Analisis Potensi Sampah Plastik sebagai Bahan Bakar PLTSa Memanfaatkan Teknologi Siklus Rankine Organik Andinusa Rahmandhika; Daryono Daryono; Ali Mokhtar; Yepy Komaril Sofi'i
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (384.625 KB) | DOI: 10.31963/sinergi.v20i1.3396

Abstract

Kelangkaan energi di Indonesia diakibatkan oleh semakin menipisnya suplai energi fosil mengharuskan pemerintah untuk mendapatkan energi alternatif, salah satunya pada energi sampah. Salah satu cara pemanfaatannya adalah dengan pembangunan pembangkitan listrik skala kecil dan peningkatan efisiensinya. Pada penelitian ini, dilakukan analisa perhitungan potensi nilai kalor sampah plastik serta simulasi mini powerplant menggunakan software Cycle Tempo. Pemanfaatan uap panas hasil pembakaran sampah sebagai sumber panas PLTSa. Komponen dari sistem pembangkit daya tersebut meliputi pompa, boiler, turbin, dan kondensor. Variasi tekanan dan temperature dilakukan untuk mendapatkan nilai optimal, sehingga didapatkan daya dan efisiensi paling tinggi. Hasil penelitian didapatkan bahwa nilai daya dan efisiensi tertinggi pada laju aliran massa 35 kg/s dan suhu keluaran boiler 125 0C, yaitu 2,86 kW dan 45,52%. Sementara pada optimasi tekanan keluaran pompa, didapatkan nilai daya tertinggi sebesar 2902 kW pada tekanan 35 bar. Penelitian ini dimaksudkan sebagai langkah awal pemanfaatan sampah plastik dalam rangka mengurangi kerugian kalor dan meningkatkan efisiensi.
Pembangkitan Microwave Plasma Dalam Berbagai Jenis Cairan Muhammad Firdan Nurdin; Andi Erwin Eka Putra; Novriany Amaliah
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (455.45 KB) | DOI: 10.31963/sinergi.v20i1.3454

Abstract

Teknologi pembangkitkan plasma dalam cairan dengan memanfaatkan gelombang elektromagnetik 2.45 GHz oven microwave telah dilakukan sebelumnya. Tujuan penelitian ini adalah untuk menganalisis pembangkitan microwave plasma dalam berbagai sampel cairan seperti cairan rontgen, pure water, air baku PDAM dan air laut. Hasil penelitian menunjukkan bahwa pembangkitan plasma dalam berbagai sampel cairan membutuhkan waktu awal pembangkitan sekitar 1-2 detik pada tekanan 6.7 kPa. Karakteristik warna plasma yang dihasilkan dalam cairan rontgen dan air laut adalah sama yakni orange, dan karakteristik warna plasma yang dihasilkan dalam pure water dan air baku PDAM adalah sama yakni pink.
Rancang Bangun Sistem Pemipil Jagung Pada Sepeda Motor Listrik Roda Tiga Lewi Lewi; Abdul Kadir Muhammad; Lifia Nur Ismayani; Akmal Setiawan
Jurnal Teknik Mesin Sinergi Vol 20, No 1 (2022): April 2022
Publisher : Politeknik Negeri Ujung Pandang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1333.251 KB) | DOI: 10.31963/sinergi.v19i2.3390

Abstract

Shelling is one of the post harvest handling for corn farmers where quality and time are important. Shelling that is done traditionally can cause fatigue and take a long time. The corn sheller machine on tricycle electric motorcycles can be used to save time during the shelling process. This research was conducted to design and make a corn sheller machine on a three-wheeled electric motorcycle that can be used to streamline time during the shelling process. In addition, the purpose of this research is to design and manufacture a corn sheller system on a three-wheeled electric motorcycle with a mechanical system with a DC electric motor as a driving force, separate corn kernels from the cob, and test with 1 kg of dry corn. The shelled corn kernels will be directly in the tub of a three-wheeled electric motorcycle while the cob will be thrown out. Based on the results of testing the corn sheller machine on a three-wheeled electric motorcycle, it was carried out twice, namely being able to shell 1 kg of corn with a percentage of crushed corn kernels of 25% for the first test and 35% for the second test.

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