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INDONESIA
Jurnal Teknik Mesin Indonesia
Published by Badan Kerja Sama Teknik Mesin
ISSN : 1907350X     EISSN : 25977563     DOI : -
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknik Mesin Indonesia “JTMI” " adalah jurnal ilmiah sains dan teknologi yang diterbitkan oleh Badan Kerjasama Teknik Mesin Indonesia. JTMI meliputi bidang konversi energi, material, desain mekanikal, manufaktur dan otomasi
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 291 Documents
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Studi eksperimen pemanfaatan limbah aluminium dan limbah kaca untuk pembuatan material komposit Juriah Mulyanti; Syahril Machmud; Sukamto Sukamto; Daniel Afrizal
Jurnal Teknik Mesin Indonesia Vol. 17 No. 1 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i1.303

Abstract

Kajian ini merupakan studi eksperimen dalam pembuatan material komposit dengan penguat serbuk kaca dari limbah rumah tangga dan serbuk aluminium dari limbah industri. Dari kajian ini akan diperoleh karakteristik material komposit dengan variasi komposisi serbuk kaca dan serbuk aluminium sebagai penguat. Kajian ini dianggap perlu dilakukakan untuk mencari bahan komposit yang bukan saja unggul dalam sifat-sifat mekanik, tetapi juga optimal dalam aplikasinya serta memanfaatkan material limbah dalam jumlah cukup besar yang memerlukan pengelolaan tepat agar tidak menimbulkan masalah. Pembuatan material komposit ini menggunakan bahan serbuk kaca, serbuk aluminium dan resin epoksi dengan komposisi perbandingan volume 50% serbuk kaca-20% serbuk aluminium-30% resin, 40%serbuk kaca-30% serbuk aluminium-30% resin, dan 35% serbuk kaca-35% serbuk aluminium-30% resin. Proses pembuatan material komposit ini menggunakan metode hot press dengan tekanan gaya vertikal 4,5 kg pada suhu 80oC selama 60 menit. Karakterisasi yang dilakukan meliputi kekerasan dan laju keausan masing-masing komposisi material. Dari hasil pengujian diketahui bahwa karakteristik terbaik dengan laju keausan terendah dan kekerasan yang tertinggi, diperoleh pada komposisi 35% serbuk kaca-35% serbuk aluminium-30% resin, dengan nilai laju keausan 7,73 x 10-6 gr/mm2.detik dan kekerasan 49,3 HRB.
Pengaruh variasi ukuran partikel terhadap profil suhu pada pembakaran batu bara sub bituminous dengan menggunakan pulverized burner Amrul Amrul; Herry Wardono; Nikolaus Derry Chandra
Jurnal Teknik Mesin Indonesia Vol. 17 No. 1 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i1.305

Abstract

Salah satu teknologi pembakaran konvensional yang masih banyak digunakan dalam proses produksi listrik di Indonesia adalah pulverized combustion. Batu bara kualitas medium merupakan jenis batu bara yang sering digunakan dalam proses produksi listrik di Indonesia. Ketersediaan batu bara yang terbatas dapat diatasi dengan melakukan pembakaran bersama antara batu bara dengan biomassa. Penggunaan bahan bakar biomassa diharapkan dapat mengatasi ketergantungan penggunaan bahan bakar fosil. Namun karakteristik pembakaran batu bara serbuk perlu diketahui sebelum melakukan pembakaran bersama antara batu bara dengan biomassa. Kajian ini bertujuan untuk mengetahui bagaimana pengaruh variasi ukuran batu bara serbuk terhadap profil suhu pembakaran yang dihasilkan. Kajian dilakukan menggunakan mesin coal combustion skala lab type pulverized burner dengan suhu uji yaitu 750°C, 850°C dan 950°C untuk melihat pengaruh partikel batu bara serbuk yang tanpa diayak dan yang diayak menggunakan ayakan berukuran mesh 100 dan mesh 200 terhadap profil suhu pembakaran. Pengurangan ukuran serbuk batu bara membuat kenaikan suhu semakin tinggi. Kenaikan suhu tertinggi terjadi pada serbuk batu bara ukuran mesh 200 dan suhu pembakaran 750°C yaitu sebesar 65,4°C. Waktu pembakaran tersingkat terjadi pada pembakaran serbuk batu bara mesh 200 dan suhu pembakaran 950°C, yaitu selama 120 detik.
Pengaruh filler serbuk basalt dan serat rotan tersusun bi-directional terhadap sifat mekanik komposit resin poliester Mugi Rahayu; Tumpal Ojahan Rajagukguk; Slamet Sumardi; Yusup Hendronursito
Jurnal Teknik Mesin Indonesia Vol. 17 No. 1 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i1.306

Abstract

Komposit terus dikembangkan dengan memanfaatkan material lokal untuk memperoleh keunggulan mekanis. Provinsi Lampung kaya akan mineral dan bahan alam seperti basalt dan rotan yang dapat digunakan sebagai bahan pengisi dan penguat. Kajian ini bertujuan untuk mengetahui pengaruh serbuk basalt dan serat rotan terhadap sifat mekanik resin komposit Polyester SHCP 2668, dimulai dengan penghancuran basalt menggunakan ballmill, diikuti dengan pengayakan. Rotan dipotong dan dibentuk menjadi serat dengan ukuran 2 mm dan direndam dalam NaOH 5% kemudian dibilas hingga bersih. Serat kering kemudian ditenun tegak lurus satu sama lain. Variasi persentase basalt yakni 2, 7, dan 12% berat dengan ukuran mesh 100, 200, dan 325. Pembuatan komposit dengan metode hand lay up dan pemadatan menggunakan tekanan 3 ton. Produk tersebut kemudian dianalisis, uji tarik berdasarkan ASTM D638-3 dan tekuk 3 titik berdasarkan ASTM D790 dan dianalisis menggunakan analisis ragam untuk mengetahui pengaruh parameter pengisi serbuk basalt. Hasil kajian menunjukkan pengaruh yang signifikan terhadap persentase basalt dengan kontribusi sebesar 79% dan serat rotan sebesar 8% pada tegangan tarik. Demikian juga tegangan lentur dipengaruhi secara nyata dengan persentase basalt sebesar 67%, serat rotan memberikan kontribusi sebesar 19,5%. Parameter ukuran serbuk filler tidak berpengaruh signifikan. Berdasarkan hasil kajian ini dapat dijadikan sebagai acuan pengembangan pemanfaatan serat basalt dan rotan pada material komposit.
Desain komponen alat pengupas dan pengiris bawang putih I Ketut Adhiarta Laksemana; Sri Nararia Anggita Damayanti; Farid Triawan
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i2.315

Abstract

Garlic as a basic spice has never been separated from the processing food industry. The garlic processing process which includes stripping and slicing will take a lot of time if the processes are done manually on each clove of garlic. The study tried to help by designing and analyzing devices that could help users peel and slice garlic using a rotation mechanism. The design of this device is designed to peel 4 kg of garlic within 30 minutes by applying a force of 25 N. The device has a uniqueness, it can be disassembled and accompanied by additional features in the form of a slicer knife to make it easier to install and use the device. Based on the results of the analysis, the safety factor values at static and dynamic loads were obtained at 1.44 and 1.73 in the most critical parts. Therefore, it can be concluded that this product is safe and has an infinite age prediction. This study is expected to be a reference for the creation of better garlic peeling and slicer products.
Studi pengaruh pengoperasian soot blower terhadap energi panas yang diserap superheater pada unit 2 PLTU tenayan Fadhlul Fajri; Rafil Arizona
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i2.316

Abstract

This study aims to determine the of heat transfer absorbed by the high temperature superheater (HTS) and low temperature superheater (LTS) in boiler unit before and after the soot blower. This research uses 3 methods, namely, literature study, field observation, and interviews. The results of analysis show the heat transfer rate absorbed by the high temperature superheater (Q_HTS) increases after 1 hour soot blower, which is 72240 MJ/hour from (Q_HTS) 1 hour before soot blower, which is only 65434 MJ/hour, (Q_HTS) increases after 2 hours soot blower, namely 72575 MJ/hour from (Q_HTS) 2 hours before soot blower only 66886 MJ/hour and (Q_HTS) increased after 3 hours soot blower which is 73903 MJ/hour from (Q_HTS) 3 hours before soot blower only 69545 MJ/hour, then rate heat transfer absorbed by the low temperature superheater (Q_LTS) increased after 1 hour soot blower, which was 91797 MJ/hour from (Q_LTS) 1 hour before soot blower was only 89625 MJ/hour, (Q_LTS) increased after 2 hours soot blower being 92208 MJ/ hours from (Q_LTS) 2 hours before soot blower which was only 90267 MJ/hour and (Q_LTS) increased after 3 hours soot blower which was 92582 MJ/hour from (Q_LTS) 3 hours before soot blower only 90536 MJ/hour.
Dampak penambahan limbah biomassa cangkang kelapa sawit sebagai bahan bakar boiler terhadap heat rate dengan metode co-firing Nefri Yurisman; Rafil Arizona
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i2.317

Abstract

Indonesia's electricity plants mostly use off-renewable resources to meet the electricity needs of people or industries such as coal. This crisis problem requires that we seek a fuel alternative to replace coal or at least reduce coal consumption. One of them biomass fuel by applying co-firing methods. The co-firing process aims to raise thermal energy in the boilers, and therefore it is expected to raise the heat rate of the boiler fuel. The application of research uses a comparative analysis method that will compare heat rate using co-firing method with heat rate without the co-firing method. Analysis shows the impact of adding biomass waste as a boiler fuel to create a heat rate with co-firing increased by 19810.41 kkal/kWh compared to the time without co-firing 19207.08 kkal/kWh. The test also affected its carbon content of 57.62% increased 57.88%, while in total sulfur from 0.20% to lower by 0.19%.
Variabel – variabel dan efeknya dalam kalkulasi tingkat keausan ban yang didasarkan atas model matematis Eduardo Wangsa Saputra; Henky Suskito Nugroho
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i2.319

Abstract

Even though tires are the only contact points of a vehicle with the road below, the tires received less attention in the development of vehicle monitoring technology. Determining the pressure of the tires is important, but about 67% of drivers cannot determine their tires conditions and do not know when to replace their worn-out tires. The tire wear is important as it increases the probability of hydroplanning. This study is created in order to provide a new insight of the effect of different driving behaviours to the wear of the tire. In order to know what variables causes greater wear to a tire, a simulation that represents the real-life conditions are required. The simulations will be made by using formulas based on Brush model and Savkoor model. Weight shift model is also implemented in order to obtain a more realistic number. Each condition is isolated with others to gain a clearer difference between conditions. From the simulations one, it is found that the greater the driving angle, the greater the tire wear. The greater the acceleration also provide a difference in the tire wear due to the weight of one side of a vehicle is heavier while the other is lighter. The greater the load or weight the tire sustain, the greater that tire’s wear. On the other hand, tire pressure pose little difference compared to the other variables.
Studi pengaruh suhu kondensasi R245FA, R515A, dan R1234ZE terhadap kinerja siklus Rankine organik Marianus R. V. T. Etu; Matheus Magnus Dwinanto; Jack Carol Adolf Pah
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i2.328

Abstract

The organic Rankine cycle has been used as a power plant that utilizes low temperature heat sources such as biomass, geothermal, and waste heat from conventional power plants. This study was conducted to analyze the energy performance of the organic Rankine cycle as a result of changes in condensation temperature using a more environmentally friendly working fluid as a substitute for R245FA, namely R515A and R1234ZE. The system performance is based on the variation of the condensation temperature using Genetron Properties software with the evaporation temperature being held constant. The important quantities analyzed are mass flow rate, pumping power, heat absorption, turbine pressure ratio, and thermal efficiency. The results of this study indicate that increasing the condensing temperature greatly increases the pumping power consumption but decreases the pressure ratio in the turbine, and the thermal efficiency of the system. The pumping power used to circulate R515A and R1234ZE is greater than that of circulating R245FA, but the thermal efficiency of the ORC system using R1234ZE is greater than that of R245FA and R515A.
Perancangan mesin packing pipa baja otomatis di PT Steel Pipe Industry of Indonesia, Tbk Aditya Pramono; Heru Arizal; I Made Arsana
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i2.338

Abstract

The use of automatic technology in the steel pipe packing process is a small part of the use of technology. There is a bottle neck or imbalance in the bundling process or pipe packing because it is still carried out by human workers with a capacity of 3000 pipe rods per work shift. Pipe packing machines sold in the market have dimensions that do not match the rooms at PT. Steel Pipe Industry of Indonesia, Tbk. The design process for this automatic pipe mill machine uses problem methods, literature studies, machine requirements analysis, design concepts, components, and investment BEP calculations. The result of this planning is a machine design that is obtained with a length of 6500 mm, width of 3852 mm, and height of 1500 mm, using a 1.5 Hp, 1000 Rpm motor. The loading simulation results using the solidworks application show the Yield Strength is 2.039e+008 N/m2. The maximum load limit is 2.9983e+007 N/m2, and the minimum load is 7.331e-004 N/m2, the cycle time of this packing machine is 5 minutes. The maximum limit of the load in the simulation above is no more than the Yield Strength of galvanized steel material so it is safe to lift 36 pipe rods in 1 bundling. And the Break Even Point can be achieved for 6 months.
Pengembangan perangkat lunak optimasi ekonomi dan analisa finansial PLTS studi kasus PLTS 10 MWAC Apri Setiawan; Agus Hermanto
Jurnal Teknik Mesin Indonesia Vol. 17 No. 2 (2022): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v17i2.342

Abstract

Financial analysis is an analysis that compares costs and benefits to determine whether a project can generate profits over the life of the project. In conducting financial analysis there are several investment feasibility criteria that are commonly used, namely, Net Present Value (NPV), Internal Rate Return (IRR), Benefit Cost Ratio (BCR), and Payback Period (PP). This study aims to develop a financial analysis software for Solar Power Plants which includes cost analysis of investment components (A, B, C, D, & E) and is made using Visual Basic for Application (VBA). In this research, a case study of financial analysis of PLTS 10 MWAC using software that the author developed, then obtained the NPV value of Rp. 939,928,554 > 0, BCR 1.01 > 1, IRR 8.87 % > Weight Average Cost of Capital (WACC) 8.76 %, and Payback Period 9 Years 8 Months < 25 Years (Project life), So it can be concluded that PLTS 10 MWAC is feasible to work on.

Page 17 of 30 | Total Record : 291

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