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All Journal Jurnal Ilmiah Teknologi dan Rekayasa Jurnal Rekayasa Mesin JTM-ITI (Jurnal Teknik Mesin ITI) Jurnal Teknik Mesin dan Mekatronika (Journal of Mechanical Engineering and Mechatronics) Infotekmesin Prosiding Seminar Nasional Teknik Mesin Jurnal Energi dan Teknologi Manufaktur Jurnal Inovasi Penelitian Jurnal Mekanik Terapan Journal of Energy, Material, and Instrumentation Technology Journal International Inspire Education Technology (JIIET) JURNAL POLI-TEKNOLOGI Jurnal PADE: Pengabdian & Edukasi Jurnal Teknik Terapan (J-TETA) Indonesian Journal of Physics (IJP) Jurnal Geosains West Science Jurnal Polimesin Recent in Engineering Science and Technology
Kamal, Dianta Mustofa
Politeknik Negeri Jakarta
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Public Health Social Sciences Transportation Veterinary

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Stabilisasi Densitas Filamen dari Komposit LLDPE-Karbon Mikro melalui Rancang Bangun Kanal Spider Leg Aminudin Zuhri; Iman Setyadi; Agus Edy Pramono; Dianta Mustofa Kamal
Jurnal Mekanik Terapan Vol 4 No 2 (2023): Agustus 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v4i2.5867

Abstract

Proses Melt Blending telah berhasil dikembangkan untuk membuat filamen 3DP dari bahan polimer. Percobaan dilakukan dengan mesin ekstrusi single screw kapasitas laboratorium. Modifikasi dilakukan dengan perancangan spider leg channel. Tools tersebut digunakan untuk mendapatkan campuran yang lebih homogen dalam fasa liquid di dalam ruang Extruder Head. Selain itu juga untuk mendapatkan tingkat kompresi selama pembentukan filamen di ruang nozzle. Percobaan dilakukan dengan mengunakan variasi filler pada komposit polimer karbon, yaitu komposit polimer karbon mikro dan komposit polimer grafit. Kedua variasi dibuat dengan komposisi berat yang sama 50:50. Untuk ukuran partikel karbon mikro digunakan mesh #200. Material polimer Linear Low Density Polyethylene/LLDPE digunakan sebagai matriks dengan ukuran mesh #40. Pada komposit polimer karbon mikro, diperoleh densitas yang relatif stabil pada temperatur setting untuk extruder head 110°C. Untuk komposit polimer grafit pembentukan filamen dengan kepadatan seragam belum berhasil diperoleh pada temperatur 110°C. Dalam kondisi kepadatan tersebut, konduktifitas listrik komposit dengan filler karbon mikro dan grafit menunjukkan fenomena perubahan yang mirip. Nilai konduktifitas listrik maksimal diperoleh pada area kanal spider leg dari extruder head. Karbon mikro sebagai filler lebih sensitif terhadap pemanasan dibandingkan dengan grafit, dan penggunaan mesin ekstrusi single screw hanya dapat dicapai dengan penambahan tools berupa extruder head.
Analisis Energi pada Mesin Pembeku Sebelum dan Setelah Penambahan Receiver Paulus Sukusno; Benhur Nainggolan; Dianta Mustofa Kamal
Jurnal Mekanik Terapan Vol 4 No 2 (2023): Agustus 2023
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v4i2.5892

Abstract

Freezing machine is a tool that is widely used to maintain the quality of food ingredients. However, freezing technology requires more energy than other preservation technologies, therefore an energy-efficient freezer is required. The aim of this research is to study and determine the freezing process energy in a freezer using a receiver and without a receiver. This article reports a comparison of the energy used in a receiverless freezer and a receiver freezer, using R404A working fluid. Each to cool and freeze 1 kg of mass water for 180 minutes. The receiver is placed between the condenser and the filter dryer in the freezer system circuit. As a result, the freezer without a receiver has a COP of 2.55, and the highest use of electrical energy consumption is 1.90 [kWh] or the average electric power of the compressor drive is 634.4 [W]. While the use of electrical energy consumption in a freezer without a receiver is low at 1.01 kWh or the average electric power of the compressor drive is 335.7 [W]. Thus, the freezer using a receiver is 47% more efficient than a freezer without a receiver, the other result is that the water-ice temperature can reach -31oC lower than -14oC. This shows that the performance of the freezer with receiver is better than the freezer without receiver.
Computational analysis of magnetohydrodynamic effects on biodiesel flow rate Tatun Hayatun Nufus; Candra Damis Widiawati; Ahmad Indra Siswantara; Gun Gun Ramdlan Gunadi; Dianta Mustofa Kamal; Asep Apriana; Dela siska; Bayu Prasetio; Irfan Hermansyah Saputra
Jurnal POLIMESIN Vol 21, No 2 (2023): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i2.3292

Abstract

The purpose of this research  is to determine the velocity characteristics of fluid (fuel) flow in a pipe surrounded by a minimal magnetic (electromagnetic) field strength by using computational fluid dynamics simulations. For a more detailed discussion, Magnetohydrodynamics (MHD) theory is used, which is a branch of science that studies fluid flow that can conduct electric current due to the influence of a magnetic (electromagnet) field. The fuel used is B0, B10, B20 and B30. The magnitude of the electromagnetic field used is 0.15 Tesla. the result is that the flow rate of B0 fuel has decreased by 0.623%. B10 fell to 0.41%. The B20 was down 0.618% and the B30 was down 0.648%. Thus the magnetic field strength of 0.15 Tesla is able to change the speed of the fuel flow even if only slightly. This information is needed as a basis for the development that the magnetic field is able to change the value of the flow velocity, this will provide information related to improving the quality of combustion and fuel savings in the future.
Optimizing the Use of Simulation Technology in Digital Learning Content Development Siregar, Isrina; Rofii, Agus; Kamal, Dianta Mustofa; Buka, Sisilia Prima Yanuaria; Xavier, Murphy; Elliot, McCarty
Journal International Inspire Education Technology Vol. 2 No. 2 (2023)
Publisher : Sekolah Tinggi Agama Islam Al-Hikmah Pariangan Batusangkar, West Sumatra, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55849/jiiet.v2i2.460

Abstract

Education in the era of globalization that allows no limits to find all information is very easy and effective to do anywhere. By utilizing simulation technology in learning so that you can prepare even better. Of course there are stages that must be followed, such as knowing what positive effects are applied using simulation technology for the development of digital learning content, you have to know the methods with people who are experienced and knowledgeable in the field. By utilizing this technology in the form of digital learning content that is able to create effective and quality learning, so that it can make the next generation superior and competitive. Increasingly sophisticated technology can facilitate human work in all fields, especially in the field of education. Many people are competing to create interactive media, so they can earn from the media they create. This should also receive attention from parties related to the world of education. The method used in this study is a quantitative method by distributing a questionnaire containing 15 statements about this simulation technology for digital learning. The purpose of this research is to optimize the use of simulation technology to enhance digital learning for students so they are able to master the skills to use maximally, creatively and innovatively against this limitless technological development. The conclusion from this study is that technology greatly influences student learning development, one of which is by optimizing the use of simulation technology in digital learning. Students and teachers really get a big positive impact with the presence of this sophisticated tool. The limitation of this research is that researchers only conduct research at the school or madradah level, which in fact they need learning media like this in learning in class, so that the class atmosphere is more conducive and attracts students' attention to learning with focus.  
Improved of Process Production Disc Car Whell Type PSD3K (City Car Type) Hasan, Herry Patria; Susanto, Iwan; Belyamin; Kamal, Dianta Mustofa; Ing-Song Yu
Recent in Engineering Science and Technology Vol. 2 No. 04 (2024): RiESTech Volume 02 No. 04 Years 2024
Publisher : MBI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59511/riestech.v2i04.71

Abstract

This research accelerates the production process with the aim of increasing productivity from Manufacturers engaged in the manufacture of automotive parts currently experiencing an increase in sales orders on the other hand facing problems in productivity due to cracked side dies in rim production to 1400 pcs. The cracking of the side die is due to thermal shock that occurs to accelerate the production process, as a result of which cracks occur in the side die. With the concept of conducting research in the field of direct production then analyzing the characteristics of mold materials, die characteristics, process characteristics, characteristics of finished products before and after changes by testing the results of the laboratory of measuring instruments and conducting trials of variations in machine setting parameters, variations in the production process and products produced. The experiment involved changing the standard temperature from 520 °C–545 °C to 532 °C–538 °C and reducing the immersion time from a minimum of 270–540 seconds to 332 seconds. It reduces the soaking time from 69 seconds to 46 seconds and the aging time from 190 seconds to 180 seconds, increasing the casting productivity from 194,870 Pcs/28 days to 213,311 Pcs/28 days from seven machines, thus meeting the customer's requirement of 200,000 Pcs/28 days without cracking side die. Durability testing on five product samples in accordance with TSD5605G standards confirms that the quality meets customer specifications. The results of this study prove that SKD6 matrial is much stronger than FCD550 against thermal shock. Keywords: thermal shock, die disc car wheel, manufacturing, automotive parts, casting productivity
ANALISIS SWOT UNTUK DIRECT CO-FIRING BATUBARA DENGAN PELLET SAMPAH PADA BOILER TIPE CFBC Muhammad Fadli; Dianta Mustofa Kamal; Pribadi Mumpuni Adhi
Jurnal Poli-Teknologi Vol. 18 No. 3 (2019)
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/pt.v18i3.2391

Abstract

Indonesia to be the world’s second-largest contributor of plastic waste in the oceans. Every resident in Indonesia can produce 0,52 kg/person/day of waste. Efforts to overcome the problem of waste by processing it into Pellets, which contain calories from 2,800 to 3,300 kcal/kg using the peuyeumisasi method, so that they can use for co-firing in PLTU. Trial for direct co-firing coal and RDF Pellet from Klungkung Bali, will be carry out on Circulating Fluidized Bed Combustion (CFBC) boiler. The goal of study to analyze the feasibility for co-firing with SWOT analysis. The SWOT analysis questionnaire was compiled based on internal and external factors, which was carried out through the study of literature and document. After the questionnaire was compiled, the questionnaire was given to respondents who collected 10 people, selected based on factors of relevance and understanding of the issues discussed. The results of the questionnaire show the main indicators, which are divided into 2 parts, internal factors consisting of strengths, weaknesses and external factors consisting of opportunities and threats. Then implemented in the SWOT matrix, to get the best strategy and whether the decision is feasible or not. The results is feasible to be implemented in the PLTU MSW, with internal factor value of 3,03 or rounded to 3 (strong) and an external factor value of 2,6 or rounded to 3 (strong). Several strategies are designed to use the strength to take advantage of opportunities, reduce weaknesses and threats.
Improved Thermal Shock Resistance of Side Die Material for Increased Production of Disc Car Whell Type PSD3K Hasan, Herry Patria; Susanto, Iwan; Belyamin, Belyamin; Kamal, Dianta Mustofa; Tjahyono, Seto
Jurnal Mekanik Terapan Vol 5 No 1 (2024): April 2024
Publisher : Politeknik Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32722/jmt.v5i1.6368

Abstract

PT.XYZ merupakan manufaktur yang bergerak dibidang pembuatan suku cadang automotive saat ini mengalami peningkatan sales order dilain sisi menghadapi masalah pada produktivitas akibat dari side die retak pada shoot ke 1400 Pcs .Retaknya side die dikarenakan adanya shock thermal yang terjadi guna percepatan proses produksi, akibatnya pada side die terjadi retakan. Riset dilakukan untuk meningkatkankan ketahanan side die terhadap shocktermal dengan mengganti material side die dari FCD550 ke SKD6 dengan tujuan meningkatkankan performance side die untuk peningkatan produktivitas. Dengan konsep melakukan penelitian dilapangan produksi langsung kemudian menganalisa kareteristik material FCD550 dan SKD6, Karateristek die , Kareteristik proses , Karakteristik produk jadi sebelum dan setelah perubahan dengan pengujian hasil lab alat ukur serta melakukan trial variasi parameter setting mesin , variasi proses produksi dan produk yang dihasilkan. Dari hasil penelitian ini membuktikan bahwa Matrial SKD6 jauh lebih kuat dibandingkan FCD550 terhadap shock thermal die disc car Whell ini terlihat pada kondisi material side die menggunakan FC550 produksi stop pada saat 1400 Pcs , Hasilnya setelah side die menggunakan material SKD6 sampai dengan produksi ke 20000 pcs side die tidak terjadi retakan
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
Sand Deposit Control Strategy on Centrifugal Pump Type Overhung 4 Size 4x11 Using API 682 Piping Plan 13 Malik, Miftahul Fahrizal Nur; Hidayati, Noor; kamal, Dianta Mustofa
Journal of Energy, Material, and Instrumentation Technology Vol 6 No 1 (2025): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.v6i1.278

Abstract

Centrifugal pumps type Overhung 4 size 4x11 often experience sand deposits and erosion problems, especially in the oil and gas industry, resulting in reduced productivity and increased repair costs. This study evaluates the application of the Piping Plan 13 API 682 as a solution to this problem. The 5-Why Analysis method is used to identify the root cause of sand deposits, which were associated with sand contamination from a liquid source and the absence of an effective filtering system. The implementation of Piping Plan 13 aims to prevent sand deposits in critical areas, such as the Pedestal Cover and Pedestals, by leveraging the circulation design of the pipeline. The results showed a 19.75% increase in pump productivity and a 76.12% reduction in repair costs. Productivity increases reached 336,000 barrels (about 53,419,731 liters) over 16 days of operation, while the repair cost fell from Rp6,699,950 to Rp1,600,000. These findings indicate that Piping Plan 13 API 682 is an effective solution to increase the life and performance of the centrifugal pump and reduce maintenance costs in operating conditions with high sand contamination.
AZOLLA AND DUCKWEED PYROLYSIS PROCESS TO BECOME ENVIRONMENTALLY FRIENDLY FUEL Kamal, Dianta Mustofa; Syuriadi, Adi; Gunadi, Gun Gun R; Heryana, Ghany
Jurnal Ilmiah Teknologi dan Rekayasa Vol 30, No 1 (2025)
Publisher : Universitas Gunadarma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35760/tr.2025.v30i1.13921

Abstract

Pyrolysis is a thermochemical conversion process carried out to efficiently convert biomass, such as azolla and duckweed, to produce environmentally friendly fuels. This study aims to compare the results of the pyrolysis process of azolla waste with duckweed into fuel. This study uses a pyrolysis reactor to produce fuel products whose main products are syngas, bio-oil, and environmentally friendly carbon charcoal. From this study, it was found that azolla only produces 0.6% oil. This is 2.07% lower than duckweed, so duckweed is a potential raw material for bio-oil. On the other hand, azolla is able to produce more syn-gas fuel than duckweed, as evidenced by the longer ignition of azolla than duckweed.
Co-Authors Abdul Aziz Assayuti Adhi, Pribadi Mumpuni Adi Syuriadi Agustinus Herwibawanto Ahmad Indra Siswantara Ainun Nidhar, Ainun Almahri, Alif Fiqih Aminudin Zuhri Andi Tenri Abeng Ardhali, Zaelan Muhammad Asep Apriana Bayu Prasetio Belyamin Belyamin Belyamin Buka, Sisilia Prima Yanuaria Candra Damis Widiawati Candra Damis Widiawaty, Candra Damis Dela siska Dewi, Renita Elliot, McCarty Ghany Heryana Gun Gun R Gunadi Gun Gun R Gunadi, Gun Gun R Gunadi, Gun Gun Ramdlan Hasan, Herry Patria Iman Setyadi Ing-Song Yu Irfan Hermansyah Saputra Iwan Susanto Jusafwar Kondo, Masatoshi Machfud Priyo Utomo Malik, Miftahul Fahrizal Nur Muhammad Fadli Muhammad Raihan Abimanyu Muslimin Muslimin Nainggolan, Benhur Noor Hidayati Nur Ani Paulus Sukusno Pramono, Agus Edy Rahman, Haolia Ramadhan, Mochammad Tendi Noer Ramdana Ajie Satria Rofii, Agus Rosidi Siregar, Isrina Sonki Prasetya Susilo, Sugeng Hadi Takahashi, Minoru Tatun Hayatun Nufus Tita Rosalina Tjahyono, Seto Vilcu, Andrei Wahyu, Mujahid Windu Asri Mumpuni Xavier, Murphy Yana Priyana Yenik Pujowati