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All Journal International Journal of Renewable Energy Development Rotasi Perfecting a Video Game with Game Metrics Rekayasa Mesin Proceeding SENDI_U Conference SENATIK STT Adisutjipto Yogyakarta Conference on Innovation and Application of Science and Technology (CIASTECH) Jurnal Sains dan Teknologi Reaksi Pilar Teknologi : Jurnal Penelitian Ilmu-ilmu Teknik
Rudy Soenoko
Brawijaya University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Analisa Ketidaksesuian Beban Kerja Matakuliah Praktek Berbasis Time Study Dan Maynard Operation Sequence Techniques (Most) (Studi Kasus Pada Jurusan Teknik Mesin Politeknik Negeri Ambon) Pattiasina, Nanse Henny; Soenoko, Rudy; Astuti, Murti; Irawan, Yudy Surya
Jurnal Rekayasa Mesin Vol 4, No 2 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Implementation of the practice course in the Department of Mechanical Engineering Polytechnic of Ambon during this work takes too long, so beyond the allocation of the appropriate amount of time available in the curriculum credits. Therefore it is necessary to analyze the workload mismatch practice course. Stages of student work time measurements performed using the method of Time Study and Maynard Operation Sequence Techniques (MOST) to obtain the normal time and standard time student practical work. Correlation with time available on the course curriculum for the Job Machine Tools 4 the number of credits is 144 hours, then declared for the methods of time study needs more work time (342.6 hours / 5 students), so the result is inadequate (less than 198, 6 hours). As for the method of MOST, obtained the required sufficient time (114 hours / 5 students).Keywords : measurement of time, the burden of college practice, MOST, standard time, normal time
Pengaruh Variasi Diameter Injektor Konvergen Udara Terhadap Fenomena Flooding Dalam Aliran Dua Fase Gas-Cair Berlawanan Arah Pada Pipa Vertikal Wahyudi, Noorsakti; Soenoko, Rudy; Wahyudi, Slamet
Jurnal Rekayasa Mesin Vol 4, No 3 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

One type of multi-phase flow is the flow of gas-liquid two-phase. Two-phase flow is widely used in daily life and industry. One type of two-phase flow is air-liquid two-phase flow in opposite directions vertically. In the two phase flow of air-liquid in the pipe flooding, phenomenon in the opposite direction is a loss, so it should be avoided or restricted. To overcome this problem then we make the air injector to get the air superficial velocity corresponding. The design of injector that with shaped nozzle has varies diameter out. They are 4 mm, 6 mm and 8 mm. These varies diameter out of nozzle will be examined to find which one of the diameter out nozzle that can slow the flooding that can be seen in the most of the parameters such as superficial velocity, air flow and flow patterns. The results of these research showed that the varies d-out that has the ability to handle debit and best superficial velocity in a row is shaped air injector nozzle with diameter out of 8 mm, 6 mm, 4 mm. The greater the air flow and air superficial velocity the faster flooding occurs. Flow pattern before the onset of flooding is annular flow pattern. Flow pattern at the beginning of the flooding was wispy annular. And flow pattern at the time of the total flooding is churn flow pattern.Keywords : two phase, counter current flow, flooding, air injector, flow regime.
Modus Pelunakan dan Pengerasan HAZ pada Manual GMAW Welded Joint Yurianto, Yurianto; Pratikto, Pratikto; Soenoko, Rudy; Suprapto, Wahyono
ROTASI Vol 21, No 2 (2019): VOLUME 21, NOMOR 2, APRIL 2019
Publisher : Departemen Teknik Mesin, Fakultas Teknik, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1261.768 KB) | DOI: 10.14710/rotasi.21.2.127-133

Abstract

Las manual gas metal arc welding banyak digunakan dalam industri manufaktur konvensional. Akhir proses pengelasan menghasilkan produk las yang diinginkan. Pada baja dengan tebal dan jenis yang sama, dan metode pengelasan yang sama tetapi operator berbeda menghasilkan kekuatan las yang berbeda. Keseragaman produk las antara satu dan operator lain dapat diperoleh dengan welding procedure specification. Namun prosedur ini tidak menjamin kekuatan sambungan sama meskipun operator berbeda. Kekuatan daerah terpengaruh panas tergantung pada parameter las yang digunakan seperti diameter elektroda; arus listrik; tegangan listrik, kecepatan pengelasan; logam tebal dan panas masuk. Selain itu, perlu dipertimbangkan unsur kimia baja yang dilas. Parameter pengelasan akan mempengaruhi dimensi daerah terpengaruh panas. Semakin lebar daerah terpengaruh panas akan menurunkan kekuatan sambungan las. Pernyataan masalah dalam penelitian ini adalah "bagaimana menurunkan dimensi daerah terpengaruh panas yang dipengaruhi oleh proses pembekuan logam las." State of the art dari penelitian ini adalah analisis pelunakan daerah terpengaruh panas dengan melibatkan pembekuan logam las. Tujuan dari penelitian ini adalah untuk mencari penyebab terjadinya pelunakan dalam daerah terpengaruh panas sambungan las gas metal arc welding manual. Hasil penelitian adalah kekerasan standard dan heat treated welded joint. Parameter perlakuan panas untuk mendapatkan kekerasan HAZ tertinggi.
Pengaruh Jumlah Sudu Terhadap Optimalisasi Kinerja Turbin Kinetik Roda Tunggal Pietersz, Richard; Soenoko, Rudy; Wahyudi, Slamet
Jurnal Rekayasa Mesin Vol 4, No 3 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Indonesia has a great potential to develop hydropower, because Indonesia's mountainous topography and hilly and is drained by numerous rivers (large and small), and in certain areas t here are lakes or reservoirs and the potential of water as an energy source. Hydroelectric Power Plant (PLTA) is a technology that has been proven to not harm the environment, support the diversification of energy as renewable energy, support the use of fuel reduction program, and most of the construction using local materials. Kinetic Turbine is one of the options in utilizing the potential of the kinetic energy in the form of velocity, kinetic studies using vertical shaft turbine, blade-shaped bowl that can withstand the flow in order to increase the tangential force generated. Amount of kinetic turbine blades is one of the variables that affect the rotation and tangential style of a turbine, so the effect on the value of the power and efficiency of a kinetic turbine. The results showed the influence of the number of blades on the power and efficiency of blade number 5, 7, 9 and 11,where the number of blades 11 have a greater influence than the number of blade 5, 7 and 9.Keywords: Water turbine, number of blades, performance
Analisa dan Penerapan Model Maintenance Quality Function Deployment (MQFD) untuk Meningkatkan Kualitas Sistem Pemeliharaan Mesin Gilingan (Studi Kasus pada PT.PG.X2 Malang) B.B, Reinaldo Jr. F.; Santoso, Purnomo Budi; Soenoko, Rudy
Jurnal Rekayasa Mesin Vol 4, No 1 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Maintenance system is critical because if the maintenance goes well it will be able to guarantee the availability of the mechanical equipment so that the production system will running smoothly. One of the mechanical equipment that most important in the manufacturing especially in the sugar mill is the milling machine. The milling machine should always be in a condition that ready for use. In order to guarantee the availability of the machine, maintenance of a good strategy absolutely must be done. This research used MQFD method whereby this method is an integration between QFD and TPM method. According to Pramod et al., Merging the two methods are expected to improve the quality of maintenance as well as to accommodate the all costumer voices both internal customers and external customers as compared to existing methods of maintenance. The results of this study, it is known that the milling machine maintenance needs to be improved in order to improve the performance of milling machines. As the solution, the steps to be taken are Implementation of routine inspection, Train maintenance staff, Assessing and Improving awareness of the operator and machinist, Utilizing softwares to record and analyze machine components data, Execution Planned Component Replacement and cleaning the machine regularly.Keywords:Maintenance Quality Function Deployment (MQFD), Total Productive Maintenance (TPM), House of Quality (HOQ), Quality Function Deployment (QFD)
Upaya Peningkatan Sifat Mekanik Baja Mild Steel Melalui Perbaikan Kualitas dengan Heat Treatment Annealing dan Holding Time pada Heat Treatment dengan Taguchi Method Rahmadianto, Febi; Purnowidodo, Anindito; Soenoko, Rudy
Jurnal Rekayasa Mesin Vol 5, No 1 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

The purpose of this study was to determine the ability of the mechanical tensile strength and hardness and microstructure of the steel material Mild Steel. The electrodes used were a new electrode, the electrode was added calium compound is then heated to 100 °C, 100 ° C and heated electrode. Strong currents are used 75 A, 85 A, and 95 A, for a distance of specimen 3 mm, 4 mm and 5 mm. This study used an experimental methodology and the research conducted in the laboratory. The test results showed that the maximum tensile strength is in the condition of the electrode plus a calium compound and heated at 100 ° C, 95 A current and a distance of 5 mm , with Heat Treatment 20 minutes is 278 N/mm2 . Similarly , for the region of weld metal hardness indicates the optimal hardness using electrodes were added and heated calium compounds 100oC , current 95 A and a distance of 5 mm , with Heat Treatment 20 minutes , which is 185 VHN . HAZ hardness to areas with the same test conditions with Weld Metals, hardness value is 371 VHN.Keywords: SMAW, current, Taguchi, optimum treatment.
Pengaruh Sudut Pengarah Aliran dan Jumlah Sudu Radius Berengsel Luar Roda Tunggal terhadap Kinerja Turbin Kinetik Maidangkay, Adrian; Soenoko, Rudy; Wahyudi, Slamet
Jurnal Rekayasa Mesin Vol 5, No 2 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

The aimof this research was to know kinetic turbine performance feat influence onguide angle of the water input flow and the amount of outter radius blade hinged of single wheel. Kinetic turbine was used in this research, it has vertical axes with three guide angle variations of 150, 250, and 350 and also the amount of blades is 8, 10 and 12. The results showed that the guide angle of flow and the amount of blades influence the kinetic turbine performance (power, efficiency, and torque). The guide angle of flow and the amountof blade out hinged radius of single wheel influences the kinetic turbine performance. From several angle variation of guide angle and the amount of blade out hinged radius of single wheel under observation, the turbine performance with guide angle of flow 350 higher than 250 and 150. The performance of 12 blades turbine is higher than turbine with blades of 10 and 8. The higher guides angle the more blades, the higher tangential force, torque, power and efficiency. The maximum performance of kinetic turbine occurs at the guide angle of flow 350, the blades amount 12, revolution 90 rpm, water capacity 50m3/hour and with produced power, efficiency and torque are 21.365 Watt, 33,241 %, and 3.864 N.m respectively.Keywords: Kinetic Turbine, Performance, Guide Angle of Flow, Amount of Blade
Pemodelan dan Verifikasi Aliran Dua Fase (Air-Udara) di Belokan 90° Nugraha, Arif Yunizar; Soenoko, Rudy; Wahyudi, Slamet
Rekayasa Mesin Vol 5, No 3 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Abstract

Two phase flow in a piping installation is influenced by the interaction between phases, geometry and orientation (vertical or horizontal), flow direction (up or down) that may affect the flow pattern. In contrast to single phase flow which only influenced by the Reynolds number in the formula of density, viscosity and pipe diameter. So the two phase flow has an interesting phenomenon to be studied which is the result of the pressure drop to form a flow pattern. The purpose of this study are to determine the pressure drop that occurs in the 90° from the horizontal position to a vertical position, and to analyze the flow pattern of two-phase fluid (water-air) at 90° in computational simulation and visualization verified with the help of high-speed digital camera. This study used clear PVC pipe (CPVC) and acrylic (PMMA) material in the 90° curves--test section with the aim to observe the flow pattern visualization then analyzed through simulation modeling with ANSYS software and verified experimentally. The calculation of the pressure drop in the 90° curve calculated theoretically and experimentally so that research can be studied scientifically. There was relationship between the flow patterns of the amount of pressure drop in the two-phase flow curves 90° of the thickness of the interface. The bigger the thickness of the interface, the pressure drop decreases both theoretically and experimentally due to the friction between the interfaces associated with friction factor, in this case is influenced by the Reynolds number and its value is inversed so the greater proportion of the air volumetric (β) then the Reynolds water number (Re SL) will decrease and increases friction between phase, besides the back pressure in the curve also affect the thickness 90° interface.There is wavy flow or turbulence in the bottom of horizontal pipe when the flow is laminar, it because of gravitation and centrifugal force or twin eddy in the actual speed ratio ( 𝑣 𝐺 𝑣 𝐿) . The conditions influenced the flow pattern and pressure drop. The highest value of speed ratio ( 𝑣 𝐺 /𝑣 𝐿 ) is 1,824 at vSG 0,076 m/s and the lowest is 0,423 at v SG 0,025 m/s.Keywords: two phase flow; pressure drop; flow pattern and curves
Pengaruh Perendaman Serat Sabut Kelapa Pada Air Batu Kapur Terhadap Wettability Sutrisno, Sutrisno; Soenoko, Rudy; Irawan, Yudy Surya; Widodo, Teguh Dwi
JURNAL PILAR TEKNOLOGI : Jurnal Ilmiah Ilmu Ilmu Teknik Vol 5, No 1 (2020): JURNAL PILAR TEKNOLOGI
Publisher : LPPM Universitas Merdeka Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33319/piltek.v5i1.47

Abstract

Abstract— Processing of natural fibers as a support material for composite materials has been widely carried out. Some studies use chemicals as a medium for processing fiber while the treatment with natural ingredients has not been done much. This study discusses the ability of the matrix to penetrate the coconut fiber. Coconut fiber that has been cleaned soaked in a solution of limestone water. Immersion is done with a variation of the lime mass percentage of 0; 2.5; 5; 7.5; 10% with 8 hours soaking time. The matrix used is unsaturated polyester yucalac 157 BQTN-EX. Wettability testing by dripping a matrix on coconut fiber. Coconut coir fibers that have been dripped with a matrix in the photo to determine the contact angle. The results of measurements and observations that with variations in mass percentage of 5% limestone with an immersion time of 8 hours have a contact angle of 11O˂Φ˂31O. Immersion with a percentage of 2.5% shows the surface of the fiber has not changed. Immersion of 7.5% and 10% of the surface of the fiber has been damaged, so the matrix can not absorb the coconut fiber to the maximum. Keywords—: coconut fiber; limestone water; contact angle; wettability; SEM.
Premixed Combustion of Kapok (ceiba pentandra) seed oil on Perforated Burner Wirawan, I.K.G.; Wardana, I.N.G.; Soenoko, Rudy; Wahyudi, Slamet
International Journal of Renewable Energy Development Vol 3, No 2 (2014): July 2014
Publisher : Center of Biomass & Renewable Energy, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijred.3.2.91-97

Abstract

Availability of fossil fuels in the world decrease gradually due to excessive fuel exploitation. This situations push researcher to look for alternative fuels as a source of renewable energy, one of them is kapok (ceiba pentandra) seed oil. The aim this study was to know the behavior of laminar burning velocity, secondary Bunsen flame with open tip, cellular and triple flame. Premixed combustion of kapok seed oil was studied experimentally on perforated burner with equivalence ratio (φ) varied from 0.30 until 1.07. The results showed that combustion of glycerol requires a large amount of air so that laminar burning velocity (SL) is the highest at very lean mixture (φ =0.36) in the form of individual Bunsen flame on each of the perforated plate hole.  Perforated and secondary Bunsen flame both reached maximum SL similar with that of ethanol and higher than that of hexadecane. Slight increase of φ decreases drastically SL of perforated and secondary Bunsen flame. When the mixture was enriched, secondary Bunsen and perforated flame disappears, and then the flame becomes Bunsen flame with open tip and triple flame (φ = 0.62 to 1.07). Flame was getting stable until the mixture above the stoichiometry. Being isolated from ambient air, the SL of perforated flame, as well as secondary Bunsen flame, becomes equal with non-isolated flame. This shows the decreasing trend of laminar burning velocity while φ is increasing. When the mixture was enriched island (φ = 0.44 to 0.48) and petal (φ = 0.53 to 0.62) cellular flame take place. Flame becomes more unstable when the mixture was changed toward stoichiometry.
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Wahid Nuruddin Adrian Maidangkay Agustinus Deka Betan Ahmad Hamim Su’udy Alfeus Sunarso Anindito Purnowidodo Arif Setia Budi, Sofyan Arif Setia Budi, Sofyan Arthur Yanny Leiwakabessy Asroful Anam Azamataufiq Budiprasojo Bachri, Gufron Saiful Denny Widhiyanuriyawan Dewa Ngakan Ketut Putra Negara Djoko Sutikno Eko Siswanto Febi Rahmadianto Fery Putra PT Frederik Demmatacco Hadi Saroso Halim Zaini, Halim Hermawan, Yuni Heru Suryanto I Ketut Suarsana I.K.G. Wirawan I.N.G. Wardana Indrayadi, Bambang ING Wardana Josef Matheus Kris Witono Misbachudin, Muh Misbachudin Moch Agus Choiron Murti Astuti Murty Astuti Nanse Henny Pattiasina Nanulaitta, Nevada Mario Nasir Widha Setyanto Nevada M.J. Nanulaitta Noorsakti Wahyudi Nugraha, Arif Yunizar Nurkholis Hamidi Panca Mudjirahardjo Ponco Muchamad Nur Cahyo Pratikto Pratikto Purnomo B. Santoso Purnomo Budi Santoso Putu Wijaya Sunu Raden Arief Setyawan Reinaldo Jr. F. B.B Richard A.de FRETES Richard Pietersz Ridho Dwi Syahrial Rio L Lukodono Rio Prasetyo Lukodono Romels C. A. Lumintang Slamet Wahyudi Soeprapto, Wahyono Soeprapto, Wahyono Sonief, Achmad As´ad Sudjito Soeparman Sugiarto S Sugiono Sugiono Sunu, P.W. Surachman Surachman Surya Irawan, Yudy Surya Irawan, Yudy Sutrisno, Sutrisno Syahrizal Syahrizal Teguh Dwi Widodo Wahyono Suprapto Widhiyanuriyawa, Denny Widodo, Teguh Dwi Wiluddyana Ghoisi Nafida Yudy Surya Irawan Yuni Hermawan Yurianto Yurianto