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All Journal Rekayasa Mesin Turbo : Jurnal Program Studi Teknik Mesin Prosiding Seminar Nasional Teknoka Sinar Sang Surya: Jurnal Pusat Pengabdian kepada Masyarakat Jurnal Rekayasa, Teknologi, dan Sains ARMATUR : Artikel Teknik Mesin dan Manufaktur
Untung Surya Dharma, Untung Surya
Universitas Muhammadiyah Metro
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Physics

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Pengaruh Penggunaan Limbah Plastik sebagai Campuran Bahan Bakar Premium terhadap Prestasi Mesin Sepeda Motor Merk-X Untung Surya Dharma; Dwi Irawan
Prosiding Seminar Nasional Teknoka Vol 1 (2016): Prosiding Seminar Nasional Teknoka ke - 1
Publisher : Fakultas Teknik, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (611.621 KB)

Abstract

Limbah plastik dapat dimanfaatkan sebagai bahan baku minyak plastik dengan menggunakan proses pirolisis. Minyak plastik yang dihasilkan dapat dimanfaatkan sebagai zat aditif atau campuran bahan bakar pada mesin. Untuk mengetahui pengaruh minyak plastik sebagai campuran bahan bakar premium terhadap prestasi mesin dilakukan pengaplikasian langsung pada sepeda motor merk-X dengan spesifikasi teknis volume silinder 179,8 cm2 , Tekanan Pembakaran 98 N/cm2 , Torsi maksimum 15,22 Nm pada 6000 rpm, Daya maksimum 12,15 kW pada 8000 rpm. Pengambilan data dilakukan pada dua kondisi yaitu kondisi stasioner untuk mengukur torsi yang terjadi dan konsumsi bahan bakar untuk menghitung daya dan pemakaian bahan bakar spesifik. Pengambilan data pada road test untuk mendapatkan nilai akselerasi dan pemakaian bahan bakar pada kondisi real dijalanan. Dari data - data pengujian dan hasil perhitungan ketahui bahwa pada campuran perbandingan minyak plastik premium adalah 1 : 4 menghasilkan torsi dan daya mendekati nilai premium murni tanpa campuran yaitu sebesar 12,55 Nm dan 7,88 kW pada 6000 rpm dengan nilai percepatan yang lebih baik. Konsumsi bahan bakar pada saat pengujian stasioner uji torsi sebesar 0,72 kg/jam pada 6000 rpm dan pada saat road test hanya sebesar 0,41 liter pada kecepatan 100 km/jam. Secara keseluruhan penelitian dapat disimpulkan bahwa semakin banyak campuran minyak plastik ( 2 : 4 dan 3 : 4) maka nilai torsi dan daya yang dihasilkan mesin sepeda motor akan semakin rendah, sedangkan konsumsi bahan bakar akan semakin besar (boros).
PELATIHAN PEMANFAATAN FREE EDUCATION LICENSE PRODUCTS OF AUTODESK UNTUK MENGGAMBAR MESIN DI SMK NEGERI 3 METRO Asroni Asroni; Untung Surya Dharma; Riswanto Riswanto
SINAR SANG SURYA Vol 4, No 1 (2020): Februari 2020
Publisher : UM Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/sss.v4i1.1701

Abstract

ABSTRAK Autodesk, Inc merupakan sebuah perusahaan multinasional yang bermarkas di Mill Valley, California. Didirikan pada tahun 1982 oleh John Walker dan Dan Drake. Menghasilkan berbagai macam produk perangkat lunak komputer. Perusahaan ini mempekerjakan 7.500 pekerjanya pada tahun 2012. Tujuan khusus yang akan dicapai dalam pengabdian ini adalah agar siswa-siswi mengerti dan memahami cara-cara mendapatkan licence resmi dari pihak Autodesk, sehingga mereka tidak mengalami kesulitan dalam melakukan instalasi di komputer atau laptop yang akan digunakan untuk menggambar mesin. Metode yang digunakan dalam pengabdian ini dengan cara melakukan demo step by step di depan para siswa dan siswi, mereka juga bisa langsung mengikuti atau mepraktikan langsung dengan mengikuti langkah-langkah yang sedang diberikan. Kata kunci : Pelatihan,  Autodesk, Menggambar mesin ABSTRACT Autodesk, Inc. is a multinational corporation headquartered in Mill Valley, California. Founded in 1982 by John Walker and Dan Drake. Produces a wide range of computer software products. The company employs 7,500 workers in 2012. The specific objective that will be achieved in this service is that students understand and understand how to obtain the official license from Autodesk, so that they do not have difficulties in installing the computer or laptop that will be used for drawing machines. The method used in this service is to do a step-by-step demonstration in front of the students, they can either follow directly or practice directly following the steps being taken.Keywords: Training, Autodesk, Drawing machine
Pengaruh campuran bahan bakar minyak plastik dan premium terhadap prestasi mesin sepeda motor Arif Permadi; Untung Surya Dharma; Dwi Irawan
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol 2 No 2 (2021): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (465.927 KB) | DOI: 10.24127/armatur.v2i2.1447

Abstract

Konsumsi energi saat ini tergolong besar mengakibatkan meningkatnya harga bahan bakar fosil serta berkurangnya distribusi disetiap pulau diindonesia. Campuran minyak plastik dan premium merupakan alternatif bahan bakar dalam mengendalikan krisis energi yang saat ini terjadi. Tujuan penelitian ini adalah untuk mengetahui maksimal daya keluaran sepeda motor, torsi dan akselerasi. Dalam metode pengukuran daya dilakukan setiap kenaikan putaran yaitu dari 2000, 3000, 4000, 5000 dan 6000 rpm, pada uji akselerasi dilakukan pengukuran pada kecepatan 20, 40, 60, 80 dan 100 km/h, dengan variabel campuran 1:4, 2:4 dan 3:4, serta dilakukan pembandingan hasil dengan bahan bakar premium. Hasilnya, campuran 1 menghasilkan daya, torsi dan akselerasi lebih baik dari campuran 2 dan campuran 3. Daya yang dihasilkan adalah 7,88 kW dengan bahan bakar spesifik 0,091 kg/jam/kW, torsi 12,55 N.m, Akselerasi atau percepatan tertinggi 5,52 m/s2 dengan menghabiskan bahan bakar sebanyak 0,25 liter, sedangkan daya yang dihasilkan premium ialah 8,1 kW dengan bahan bakar spesifiknya 0,09 kg/jam/kW, torsi 12,9 N.m, dan percepatan tertinggi 5,45 m/s2 dengan konsumsi bahan bakar 0,25 liter. Sehingga dinyatakan bahwa nilai daya, torsi dan akselerasi pada campuran 1 masih dibawah bahan bakar premium, namun campuran 1 memiliki tingkat efisiensi lebih baik dari bahan bakar premium.
PENGARUH PENAMBAHAN RADIUS PADA KECEPATAN DAN FREKUENSI SLUG DI DAERAH DOWNSTREAM T-JUNCTION MINICHANNEL Hananto, Leila Hanjani; Indarto; Untung Surya Dharma; Deendarlianto
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1586

Abstract

Multiphase flow channel is commonly applied in various industrial contexts, including lab-on-a-chip, nuclear power plants, microelectronics cooling systems, and chemical microreactors. Equipment ranging from mini to micro sizes plays a vital role in enhancing heat and mass transfer processes during the mixing of two or more phases. Non-uniform phase distribution during the passage of a two-phase flow through a T-junction can cause performance issues in the downstream region. A problem arising from the use of T-junctions is the occurrence of slugs. An experimental study was conducted to investigate the effect of varying bend radius on the flow characteristics in the downstream region of a T-junction minichannel, such as slug velocity and frequency. The slug velocity was researched in the downstream region of the horizontal minichannel T-junction. The working fluid used was air as the gas phase and water. The findings indicate that there is a linear relationship between the superficial velocities of air and water and the corresponding slug velocity in the downstream area of the horizontal minichannel T-junction, as observed through the utilization of a high-speed camera and MATLAB program for image processing. It has been observed that the local velocity within the channel increases as the corner radii increase towards the downstream region.
Karakteristik biopelet tempurung kelapa dan serbuk kayu sebagai bahan bakar alternatif Suyoko, Muhammad; Ridhuan, Kemas; Dharma, Untung Surya
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 1 No. 1 (2020): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (651.592 KB) | DOI: 10.24127/armatur.v1i1.185

Abstract

Biomass is a solid waste derived from biological material that can be generated as fuel. Biomass includes plantation, agriculture, household, forest waste and waste from the wood industry, one of the uses of biomass is bio-pellet. Bio-pellet is an alternative type of energy in the form of solid fuel made from biomass raw material with a size smaller than the size of briquettes. In this research, raw materials from teak wood, acacia, and sengon wood powder were used as well as a mixture of coconut shell charcoal with tapioca adhesive. This study aims to determine the bio-pellet estimation analysis, determine the heating value required by the bio pellet in the combustion process, and determine the burning characteristics of the three types of bio pellets. The method used in this study was the process of making bio-pellet with the same treatment on each bio-pellet, variations bio pellet will be made is 50% teak wood powder and 50% coconut shell charcoal powder, 50% acacia wood powder and 50% coconut shell charcoal powder, and 50% sengon wood powder and 50% coconut shell charcoal powder. Each bio pellet uses an adhesive mixture of 5% of the raw material. The stages of the testing process are bio pellet in laboratory tests to determine the value of the composition of the levels of heat, water, ash, flying substances, and bound carbon. The next testing process is the testing process of bio pellet combustion using a bio pellet stove with a process of boiling 10 liters of water, with fire temperature, water temperature, and the remaining fuel measured. All was done at UM Metro 2 campus. The results of bio pellet testing in the laboratory stated that the highest value was in sengon bio pellet with heating value of 5815.19 cal/g, water content of 5.82%, the ash content of 9.77%, levels of flying matter 69.37%, and carbon content bound 19, 41%. For the high heating value of bio pellet burning is 784.92 kcal/hour. Then the best efficiency is the sengon bio- pellet with a value of 55%.
Pengaruh jenis bahan dan jumlah gigi perontok terhadap kinerja mesin thresher sebagai perontok padi Setiawan, Agus; Dharma, Untung Surya; Budiyanto, Eko
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 1 No. 1 (2020): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (605.668 KB)

Abstract

In this technological world, mechanical engineering is inseparable from the existence of a tool and machine that plays an important role in everyday life such as agricultural machinery. This study aims to determine the effect of the type of thresher material, variations in the number of thresher teeth, grain quality, maximum capacity. The method used in this research is literature study, direct observation or observation. Based on the results of measurements and testing with three variations of 3 different thresher teeth materials, the required data is obtained and the data is processed and calculated that the material of bolts, iron bolt, and per leaf, is increasing from 3 different variations in the level of thresher teeth crookedness the bolt material reaches 60o and in the molten iron thresher the bending level rises to 63o whereas in the iron threshold of iron teeth per leaf the smallest is 32o. After conducting direct field testing we can find out that the quality of rice in the variation of the number of thresher teeth 36 thresher teeth reached 40.2 kg, the variation of 40 reached 43.7 kg, and the variation of 44 thresher teeth reached 44.5 kg. Variation 44 teeth thresher has the highest results.
Pembuatan minyak plastik dengan metode destilasi bertingkat Setiawan, Rahmady; Dharma, Untung Surya; Andriyansyah, Nopri; irawan, Dwi; yanto, Repki
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 1 No. 1 (2020): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (333.788 KB) | DOI: 10.24127/armatur.v1i1.188

Abstract

Waste is unwanted residual material and is no longer used after the end of a process. garbage that cannot be decomposed (undegradable) which is rubbish that cannot rot like plastic, becomes a problem in itself, so much garbage is disposed of every day by humans becomes a very complex problem that is certainly very disturbing to the environment and ecosystem, therefore management is efficient and precise will be very helpful in efforts to reduce waste in the environment, by conducting a multilevel distillation process it is hoped that waste will become a fuel which is certainly more useful. The types of waste used in this study include: PET (Polyethylene terephthalate, HDPE (High Density Polyethylene), PVC (Polyvinyl Chloride), LDPE (Low Density Polyethylene, PP (Polypropylene), PS (Polystyrene). The purpose of this study is to know the value of Viscosity, Density, and Calorific Value of plastic oil which is processed by the distillation method stratified at temperature variations.From the tests conducted using temperature variations, the density value of oil sample C which is distilled at a temperature of 450o C in both tubes has the highest value, namely 0.844 gr / cm3.The highest heating value is in PP (Polyprophylene) oil of 43808.1 Joules / gram. The oil viscosity of sample C has the highest value of 1.9200 cSt.
Pengaruh viskositas bahan bakar terhadap karakteristik aliran fluida pada pompa sentrifugal Susilo, Efendi Joko; Dharma, Untung Surya; Irawan, Dwi
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 2 No. 1 (2021): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (323.041 KB) | DOI: 10.24127/armatur.v2i1.740

Abstract

Pompa merupakan mesin fluida yang digunakan untuk memindahkan fluida cair yang pada umumnya dari tempat rendah ke tempat yang lebih tinggi melalui sistem perpipaan. Proses pemindahan ini terjadi akibat perubahan energi mekanik dari motor pompa menjadi energi potensial pada fluida, fluida dapat dikatakan statis bila fluida tersebut dalam keadaan tidak bergerak atau diam pada suatu wadah dan dapat dikatakan kinematis bila fluida tersebut bergerak secara terus-menerus akibat adanya suatu gaya gesek atau tekan seberapapun kecilnya. Adapun metode penelitian yang akan dilakukan dengan menggunakan tiga variasi media bahan bakar yaitu: premium,pertalite, dan solar. Alat yang digunakan yaitu pompa air jenis sentrifugal dengan pengambilan data pada setiap media sebanyak lima kali yaitu: putaran 2000 rpm, putaran 2200 rpm, putaran 2400 rpm, putaran 2600 rpm dan putaran 2800 rpm pada temperatur ruangan. Berdasarkan hasil penelitian didapat jenis aliran yang terjadi pada alat uji menggunakan tiga media bahan bakar adalah jenis aliran turbulen. Karena bilangan Reynoldnya lebih dari 4000. Perubahan tekanan berbanding lurus dengan viskositas dan berbanding terbalik dengan kecepatan dengan hasil pengujiana perubahan tekanan pada solar pada pipa pembesaran 204,04 N/m2, perubahan tekanan pada pertalite pada pipa pembesaran 158,62 N/m2 dan perubahan tekanan pada premium pada pipa pembesaran 151,07 N/m2.
ANALYSIS OF THE EFFECT OF TEMPERATURE AND HEATING TIME ON ASTM A572 STEEL AS A MATERIAL FOR MAKING INCINERATOR COMBUSTION CHAMBER ON THE RATE OF CORROSION Nugroho, Eko; Rajabiyah, Nurlaila; Dharma, Untung Surya; Kristian, Latif
TURBO [Tulisan Riset Berbasis Online] Vol 14, No 1 (2025): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i1.4297

Abstract

Corrosion is the degradation of metal quality caused by a reaction between the environment and the material. Generally, corrosion problems are caused by water. However, there are several factors other than water that influence the corrosion rate, such as temperature. An increase in temperature in a corrosive system will increase the rate of corrosion. This is caused by an increase in the active energy of the particles involved in the corrosion reaction. The aim of this research was to determine the effect of temperature and firing time on the corrosion rate of ASTM A 572 steel material. The research method used was experimental, using ASTM A 572 steel plates measuring 5 cm wide and 7 cm long with a thickness of 5 mm with the heating process used being 3 hours, 5 hours and 7 hours at temperatures of 600oC, 650oC and 700oC. The results of the research on the effect of temperature and firing time on the corrosion rate of ASTM A 572 steel material showed that the lowest average corrosion value was 0,3947 mm/year with a testing time of 3 hours at a temperature of 600oC. Then the highest average corrosion value was obtained, namely 8,0937 mm/year with a testing time of 7 hours at a temperature of 700oC
NUMERICAL STUDY OF THE BUBBLE FORMATION MECHANISM IN HORIZONTAL LIQUID-GAS FLOW IN A T-JUNCTION MINICHANNEL Widodo, Gilang Destya; Dharma, Untung Surya; Deendarlianto, Deendarlianto
Jurnal Rekayasa Mesin Vol. 16 No. 2 (2025)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v16i2.1872

Abstract

The purpose of this research was to study the mechanism of air bubble formation at the T-Junction Minichannel. Numerical simulations were carried out using the Volume of Fluid (VOF) method on OpenFOAM v2112 with the Pressure Implicit with Splitting of Operators (PISO). Working fluids of water and air were simulated in a T-junction minichannel with a rectangular cross section size of 1.25 x 2.25 mm with a hydraulic diameter of 1.6 mm and a connection radius of 1.12 mm. Two-phase flow is simulated using samples in the air speed range Ug = 0.59 m/s – 1119 m/s and water speed Ul = 0.81 m/s – 1.16 m/s. The results showed that the mechanism for the formation of air bubbles is influenced by the water flow mechanism which maintains the volumetric flow rate along with the growth of air bubbles in the flow cross-section direction which causes an increase in water velocity in the gap between the flow interface and the wall, so the shear stress of the water flow increasing at the flow interface causes the air bubbles to be pushed to flow faster. The velocity of water and air flow increases as the flow cross-sectional area of each phase decreases and a rotational flow occurs in the air bubble area when the air bubble initially forms. Pressure increase occurs in the flow of air and water just before the air bubble break up and a pressure decrease significantly when the air bubble break-up.
Co-Authors Agus Setiawan Ahmad Nuryanto Andriyansyah, Nopri Arif Permadi Asroni Asroni Chika Setyadi Cipta Gani Segara Deendarlianto Dwi Irawan Dwi Irawan EKO BUDIYANTO Eko Nugroho Eko Nugroho Eko Nugroho Galih Prasetyo Hamim Bustomi Hananto, Leila Hanjani Indarto Kemas Ridhuan Kemas Ridhuan, Kemas Kristian, Latif Kurniawan, Sodik Lukito Dwi Yuono M Fatkurahman Mafruddin Mafruddin Masherni Masherni Nurlaila Rajabiah riswanto riswanto Setiawan, Rahmady Susilo, Efendi Joko Suyoko, Muhammad Tri mahyudi, Erik Wahyudi, Totong Heru Widodo, Gilang Destya yanto, Repki Yasir Thalabi