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All Journal TEKNIK Rotasi GEMA TEKNOLOGI Abdimas Rekayasa Mesin J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Mechanical Engineering for Society and Industry Jurnal Pengabdian Vokasi Journal of Vocational Studies on Applied Research

Seno Darmanto

Program Diploma III Teknik Mesin Fakultas Teknik Universitas Diponegoro

Author-ID : 249943

Aerospace Engineering Arts Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Transportation

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Aplikasi Peralatan Tekuk Plat untuk Industri Berbasis Logam UMARDANI, YUSUF; DARMANTO, SENO
Jurnal Pengabdian Vokasi Vol 3, No 2 (2023): November 2023
Publisher : Sekolah Vokasi Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpv.2023.21544

The potential, opportunities and advantages of the metal industry in Mliwis Cepogo have not been able to drive the people's economy optimally. This condition will be even more complicated because the metal industry, especially in production units, is constrained by equipment for workmanship. The realization of service activities at Zazen Art Galeria partners is principally carried out by strengthening the copper engraving industry, especially production units with the application of plate bending machines. The application of plate bending machines can improve product quality and quantity and increase productivity in production units. The plate bending machine's performance can be improved by applying hydraulics as a plate driver/presser

ANALISIS KINERJA MOTOR BAKAR PENGGERAK GENERATOR SET DENGAN CAMPURAN BAHAN BAKAR PERTAMAX DAN ETANOL Wibisono, Anggit; Handayani, Sri Utami; Darmanto, Seno
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 9, No 1 (2023): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v9i1.7467

Energi merupakan salah satu kebutuhan utama penunjang kehidupan manusia modern. Salah satu bentuk energi yang digunakan oleh manusia adalah energi listrik. Energi listrik dihasilkan oleh peralatan pembangkit listrik yaitu generator. Penggerak mula generator skala kecil menggunakan motor pembakaran dalam (motor bakar) dengan bahan bakar minyak. Tingginya emisi pada pembakaran di generator set dikarenakan rendahnya efisiensi motor bakar yang salah satunya berasal dari rendahnya kualitas dari bahan bakar yang digunakan. Salah satu cara untuk menanggulanginya dengan meningkatkan efisiensi motor bakar yaitu menambahkan etanol pada campuran bahan bakar pertamax. Pembuatan tugas akhir ini dilakukan dengan tujuan untuk mengetahui kinerja motor bakar sebagai penggerak generator set dengan bahan bakar campuran pertamax dan etanol. Kinerja motor bakar yang dimaksud menghitung daya mesin, konsumsi bahan bakar spesifik, efisiensi thermal, dan emisi gas buang dari pengujian alat generator set skala laboratorium. Variabel pengujian adalah campuran bahan bakar pertamax dengan etanol 5%, 10%, 15%, dan beban generator (Watt). Alat uji yang digunakan dalam proyek akhir adalah genenerator set yang dikopel dengan mesin 4 tak 1 silinder General ET-3200L. Hasil pengujian menunjukkan bahwa kinerja mesin dengan bahan bakar campuran pertamax dengan etanol 10% lebih tinggi dibandingkan bahan bakar pertamax murni, campuran etanol 5% dan campuran etanol 15%.Kata kunci : generator set, bahan bakar, pertamax, etanol, kinerja motor bakar

KAJIAN EKSPERIMEN PENGGUNAAN SOLAR CELL SEBAGAI ALTERNATIF PENGISIAN AKUMULATOR 200Ah 12 Volt MESIN DIESEL PLTD Yusuf, Bakharuddin; Darmanto, Seno; Handayani, Sri Utami; Susastro, Susastro
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 2 (2022): Oktober
Publisher : universitas teuku umar

PLTD (Diesel Engine Power Plant) is one generator used by several companies, especially electricity providers. It’s just that PLTD requires a large enough cost to produce electrical energy. Therefore it is necessary to make efforts to reduce operational costs, one of which is by making an alternative to charging the accumulator on the diesel engine. The alternatif is a prototype solar cell that can charge the 200 Ah 12 Volt accumulator so that the accumulator can be used for the starting process diesel engine (PLTD). So, at this writing the author tries to make an experimental study of the use of solar cells as an alternative to charging a 200 Ah 12 Volt accumulator which in this experimental study proceduces a 2 x 80 Wp mobile solar cell prototype that can be used for charging the accumulator of PLTD machines. In addition, from this experimental study, the results of accumulator charging of 1,444.92 Wh are sufficient to be used for the dynamo starter process on diesel diesel engines and the annual savings value is obtained.

RANCANG BANGUN ALAT FIXED STEERING ROLLER UNTUK MENCEGAH MISTRACKING PADA BELT CONVENER Budiharja, Yuniar Anis; Darmanto, Seno; Mangestiyono, Wiji
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 2 (2022): Oktober
Publisher : universitas teuku umar

Fix the Steering Roller, Where the purpose of making this tool is to prevent mistracking on the Belt Conveyor. The manufacture of this tool was carried out considering the need for PLTU Nagan Raya 2 x 110 MW. PLTU itself is a coal-fired power plant where all coal needs from the Jetty to the Bunker are transported using a Belt Conveyor. In fact, when transporting coal using a Belt Conveyor, there are a lot of coal spills on the Belt side so that it really interferes with the work process of the conveyor belt itself. The spill was caused by a tilted conveyor belt or it could be called mistracking. Therefore, the manufacture of this tool is a solution to prevent mistracking where the installation of this tool is very easy and does not interfere with the existence of the Belt Conveyor equipment itself.

Penambahan Katalik Konverter Plat Tembaga Berbentuk Spiral Terhadap Emisi Gas Buang Motor Bakar Menggunakan Gasboard 5020 Daryono, Mohammad; Darmanto, Seno
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 2 (2022): Oktober
Publisher : universitas teuku umar

Due to the high use of motorized vehicles, air pollution will arise which can interfere with the environment and human health. The results of the combustion of motor vehicle fuels produce pollutants that are harmful to human health, if inhaled by humans, they can cause respiratory tract irritation, eye irritation and skin allergies, which can lead to lung cancer. The purpose of this study was to examine whether copper plates can be used as a substitute for catalytic converters to reduce exhaust gas emissions (CO and HC gases). The test results show that copper plate can be used as a catalytic converter replacement material with a significant reduction in exhaust emissions, with a decrease in the percentage of CO by 29.9% at 5000 rpm using a 10 winding catalyst, and a decrease in the percentage of HC by 33.9% at rotation. 5000 rpm using a 10 winding catalyst. Suggestions from this study are if you use it for daily purposes, you should use a catalyst that has 10 winding.

ANALISA PERBANDINGAN HASIL UJI TARIK PADA BEBERAPA SPESIMEN DENGAN LOAD CELL BERKAPASITAS 500 KN Al Ayubbi, Irfan; Darmanto, Seno; Ariwibowo, Didik
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 2 (2022): Oktober
Publisher : universitas teuku umar

Many tensile tests are carried out to complete the basic design information of the strength of a material and as supporting data for material specifications. In the tensile test, the test object is given a load of tensile force that increases continuously, at the same time observations are made regarding the extension experienced by the test object. This study aims to determine the mechanical properties and their changes from a metal to tensile loading using qualitative methods and data collection methods using literature review. The study is carried out by collecting data through a literature book related to the object of the final project. The test results of the material that has the smallest value, namely Aluminum, are obtained, the value without heat treatment is Voltage = 566 N / mm2, Strain = 7.9 , ME = 72.1 N / mm2) and the value using heat treatment is Voltage = 439 N / mm2), Strain = 3.5, ME = 124.5 N / mm2). While the largest value, namely Iron Concrete TP 280, was obtained, the value without heat treatment was Voltage = 1012 N / mm2, Strain = 6.5 , ME = 156.4 N / mm2). While the values when using heat treatment are Voltage = 729 N / mm2), Strain = 3.7, ME =198.8 N / mm2). It can be concluded that the results of the comparative analysis of the strength of the test material without heat treatment and using heat treatment are known when the material is heated until it is close to its critical point, the material will form a new property that will make it change its properties to be tenacious or brittle.Keywords : Tensile Test, Stress, Strain, ME "Modulus of Elasticity", Heat Treatment

ANALISIS PERANCANGAN ULANG POMPA HYDRANT PADA SISTEM FIRE FIGHTING GEDUNG KONTROL GARDU INDUK 150 KV AIMAS Jusman, Jusman; Darmanto, Seno; Sutrisno, Sutrisno
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 9, No 1 (2023): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v9i1.7303

Pentingnya alat pemadam kebakaran pada suatu Gardu Induk baik di sisi Switchyard maupun di dalam gedung kontrol dikarenakan peralatan di dalamnya sangat riskan mengalami kebakaran. Adapun tujuan utama penelitian ini adalah untuk mengetahui diameter pipa yang sebaiknya digunakan berdasarkan ketentuan NFPH dapat dihitung serta penentuan berapa kapasitas pompa yang sebaiknya digunakan dalam system Hydrant. Hasil penelitian didapatkan bahwa instalasi pipa existing seluruhnya menggunakan diameter 2,5 inci, namun setelah dilakukan perhitungan maka diameter pipa yang dibutuhkan yaitu diameter 6 inci sepanjang 2,5 meter, pipa dengan diameter 4 inci sepanjang 27,1 meter dan pipa diameter 3 inci sepanjang 37,4 meter. Berdasarkan hasil perhitungan, maka didapatkan debit aliran air total untuk ketiga hydrant sebesar 0,057 m³/s (903 GPM). Head total pompa yang harus dipenuhi adalah sebesar 78 m dan daya pompa sebesar 55 kW.Kata kunci : Gardu Induk, kebakaran, system Fire Fighting, sistem Hydrant, Pompa Hydrant, NFPH.

Rancang Bangun Mesin Pelangsiran Material Konstruksi Tower Transmisi Sistem Crane Pulley dengan Kapasitas Maksimal 250 kg Mukhamad, Alaya Fadlu Hadi; Darmanto, Seno; Haqni, Firdaus Kurniawan
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 2 (2022): Oktober
Publisher : universitas teuku umar

Material shredders are used in construction projects to move materials from the starting point to the intended point. This trimming machine uses a type or system of crane pulley. In the world of construction, it can rarely be used in various terrains, whether flat terrain, valley terrain, or hilly terrain. Therefore, this paper aims to ensure that the process of upgrading / transferring the construction material of the 150 kV transmission tower can run well on flat terrain to difficult terrain such as valleys and hills based on several consideration factors. The design process of the material shredder consists of three stages, namely design, tool making, and tool testing. The design process consists of several stages, namely field review and the availability of supporting systems and raw materials. The fabrication process, carries out the assembly of materials that are already available by the predetermined design. The process of testing the tool, using the test method directly in the field so that the data presented is real loading data. The material drill engine can be used well in the field with a maximum carrying capacity of 250 kg with the highest effective tool capacity of 12,424kg/hour and fuel sed as much as 0.91 liters/hourKeywords : Design and Construction, Solidworks, Material Transfer Tool, Shifting Machine, Material Mover

ANALISA TEMPERATUR TEMPERING TERHADAP STRUKTUR MIKRO DAN NILAI KEKERASAN BAJA S50C Nugroho, Galih Satrio; Sutrisno, Sutrisno; Darmanto, Seno
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 9, No 1 (2023): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v9i1.7281

Baja S50C merupakan jenis material yang banyak pada komponen automotif sebagai contoh untuk komponen roda gigi pada kendaraan bermotor. Baja ini akan terkena pengaruh gaya luar sehingga menimbulkan perubahan bentuk (deformasi). Untuk menjaga ketangguhan dan kekuatan baja ini perlu dilakukan perlakuan panas, perlakuan panas yang dilakukan pada penelitian ini yaitu hardening dan tempering. Baja S50C dipanaskan hingga 950°C kemudian didinginkan cepat (quenching) menggunakan media pendingin oli dan air. Sedangkan untuk tempering dilakukan pada variasi temperatur 200°C , 400°C, 600°C. Struktur mikro yang terbentuk pada material uji yaitu martensit dan bainit. Peningkatan temperatur tempering mempengaruhi sebaran martensite yang semakin sedikit dan didominasi bainite yang semakin halus. Berkurangnya martensite dan semakin halusnya bainite menunjukkan bahwa baja semakin ulet dan kekerasannya menurun. Nilai kekerasan pada baja dengan media pendinginan cepat menggunakan air adalah 59,1 HRC dan 49,1 HRC pada pendingin oli. Sedangkan pada baja dengan media pendingin cepat air, nilai kekerasan pada temperatur tempering 200°C: 57,5 HRC, 400°C: 52,8 HRC, dan 600°C: 43,5 HRC, pada baja dengan media pendingin cepat oli, nilai kekerasan pada temperatur tempering 200°C: 43,5 HRC, 400°C: 39,8 HRC, dan 600°C: 37,8 HRC. Peningkatan temperatur tempering akan meningkatkan keuletan dan menurunkan kekerasan baja S50C.

REDESIGN PULVERIZER SHAFT UNIT 2 DI PLTU SEKTOR BUKIT ASAM 4 X 65 MW Hardyanto, Arief Prakoso; Mangestiyono, Wiji; Darmanto, Seno; Murni, Murni
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 2 (2022): Oktober
Publisher : universitas teuku umar

In the operation of the Bukit Asam power plant, in all generating units there are many disturbances that can cause derating the units. Derating of the unit can occur due to decrease in the performance of the steam turbine, decrease in the reliability of the pulverizer, and also disturbances in the coal supply system and various factors. Based on the performance data of the Bukit Asam Generation Sector (Monthly disturbance report) in January 2014, there were 54 derating disturbances recorded. One of the causes of the derating was a broken Pulverizer Shaft with a loss of operating hours for 196.78 [hours] which caused an unallocated electricity loss of 12,422 [GWh]. With the realization of AFI (Action For Improvement) in this final project creation assignment, it aims to redesign the shaft pulverizer, as well as analyze the causes of the pulverizer shaft break. By redesigning the pulverizer shaft and analyzing the cause of the pulverizer shaft breaking, it was found that the cause of the fracture of the shaft made from AISI 1045 with the old design was from calculating the shear stress value of 48.44 x 107 [N/m2], this result exceeded the value of the material permit voltage of 31.8 x 107 [N/m2], so it was not safe to use and the service life was not long. The results of the redesign shaft changed the dimensions of the diameter of the shaft head which was previously 0.174 [m] in diameter to a dwelling of 0.25 [m]. The results of calculating the redesign shaft made from AISI 1045 obtained a shear stress value of 16.33 x 107 [N/m2], this result is smaller than the material clearance voltage value of 31.8 x 107 [N/m2], so it is safer with a relatively longer service life.Keywords: Derating, Pulverizer Shaft, material, Redesign, Shear Stress

Co-Authors Abdurohman, Hasan Adi Nugroho Al Ayubbi, Irfan Bambang Setyoko Budiharja, Yuniar Anis Daryono, Mohammad Didik Ariwibowo Eko Julianto Sasono Fathurrohman , Nur Kholis Ferdiyanto, Riky Firdaus, Ghifa Haqni, Firdaus Kurniawan Hardyanto, Arief Prakoso Hartono Hartono Ireng Sigit Atmanto Juli Mrihardjono Jusman Jusman Krolczyk, Grzegorz Kusni, Muhammad Margaretha Tuti Susanti Muhammad Abdillah Muhammad Akhsin Muflikhun Mukhamad, Alaya Fadlu Hadi Murni Murni Nina Mardiana (F01108057) Nugroho, Alvin Dio Nugroho, Galih Satrio Permana, Bagus Hendra Pohan, Herman Abidin Putra, Sulthonul Rahardja, Dimas Revindra Ridwan, Mohd. Saputra , Imam Saputra, Galih Satria Hendri Sarwoko Sarwoko Sri Utami Handayani Sriyana Sriyana Sunarso Sugeng Susastro, Susastro Sutrisno, Sutrisno Triyatno Triyatno Wahyu Caesarendra Wahyu Dwi Lestari Wibisono, Anggit Wiji Mangestiyono Windu Sediono Yoga Yuniadi Yuniarto Yuniarto, Yuniarto Yusuf Umardani Yusuf, Bakharuddin

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