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All Journal Rotasi GEMA TEKNOLOGI Abdimas Rekayasa Mesin J-Dinamika: Jurnal Pengabdian Kepada Masyarakat Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi 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 Computer Science & IT Education Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences

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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

ANALISIS PERFORMANCE COOLING TOWER TIPE INDUCED DRAFT COUNTER FLOW PLTP KAMOJANG UNIT 5 Abdurohman, Hasan; Mrihardjono, Juli; Darmanto, Seno
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 8, No 2 (2022): Oktober
Publisher : universitas teuku umar

Cooling tower is a heat exchanger used to cool water from the condenser. The process is carried out by contacting water with air directly and discharged into the atmosphere using air fluid that is flowed naturally or flowed by a fan. Cooling tower type used in PLTP Kamojang Unit 5 is Induced draft Counter Flow. This equipment more important in increasing turbine efficiency, therefore special treatment is needed by knowing and observing the performance of the Cooling tower so that it can be analyzed in actual conditions and make decision steps in carrying out further repairs and maintenance, this is the basis of research that will be carried out by looking for value and the Cooling tower performance trendline. The calculation method uses the standard ASME PTC 23-2003 and CTI ATC-105 where the results are the calculation baseline and the historical trendline of Cooling tower performance based on the parameters of the 3-cell Cooling tower operating conditions. The parameters tested are by taking 5 valid data on PLTP KMJ Unit 5, then the Tower Capability performance values are obtained as follows, namely in the initial commissioning conditions the performance value is 92,1%, Q1 2021 is 78,8%, Q3 2021 is 74, 3%, Q4 2021 is 84,7%, and Q1 2022 is 83,8%. There was a decrease in Q3 2021. Then there was an increase in the trend in Q4 2021 due to previous overhaul activities on the Cooling tower. Keywords: Cooling tower, trendline, overhaul, tower capability

Reliability Analysis of Diesel Engine at LNG Plant using Counting Process Darmanto, Seno; Atmanto, Ireng Sigit; Permana, Bagus Hendra
Journal of Vocational Studies on Applied Research 2019: JVSAR, Volume 1 Issue 2 Year 2019 (October 2019)
Publisher : Vocational College of Universitas Diponegoro

The purpose of this research is to analyze the reliability of diesel engine as driver for fire water pump. To determine the reliability level of the diesel engine, this research will apply counting process so that the rate of failure of the diesel engine can be known. The data used as basis for calculation is failure data gained from maintenance work order databases from 2012 to 2017. The data obtained will be processed using counting process method to produce mathematical modeling to predict the amount of failure to diesel engines in the future. From 4 diesel engines, only 3 parametric failure rate (l) that could be generated, for 33-GE-5A, for 33-GE-5B, and for 33-GE-5C, since 33-GE-5D was severely damaged in September 2015. The mathematical modeling will be verified using the Pearson's Chi-squared Test method to ensure the validity of the mathematical model can be guaranteed. The result of the goodness of fit test shows that only parametric failure rate (l) for 33-GE-5B and 33-GE-5C that could be accepted. The outcome mathematical model will be used to predict future behavior and failure of the unit so effective and efficient maintenance strategy for 33-GE-5B and 33-GE-5C could be applied

Co-Authors Abdurohman, Hasan Adi Nugroho Al Ayubbi, Irfan Baehaqi 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 Kusni, Muhammad Margaretha Tuti Susanti 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 Ridwan, Mohd. Saputra , Imam Saputra, Galih Satria Hendri Sarwoko Sarwoko Siswahyudianto Sri Utami Handayani Sriyana Sriyana Sunarso Sugeng Susastro, Susastro Sutrisno, Sutrisno Triyatno Triyatno Wibisono, Anggit Wiji Mangestiyono Windu Sediono Yuniarto Yuniarto, Yuniarto Yusuf Umardani Yusuf, Bakharuddin

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