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All Journal International Journal of Renewable Energy Development Rotasi TELKOMNIKA (Telecommunication Computing Electronics and Control) Rekayasa Mesin Journal of Engineering and Management in Industrial System Proceeding SENDI_U Conference SENATIK STT Adisutjipto Yogyakarta Conference on Innovation and Application of Science and Technology (CIASTECH) INTEK: Jurnal Penelitian Jurnal Sains dan Teknologi Reaksi Pilar Teknologi : Jurnal Penelitian Ilmu-ilmu Teknik International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Proceeding ISETH (International Summit on Science, Technology, and Humanity)

Rudy Soenoko

Brawijaya University

Author-ID : 384049

Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering 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 Medicine & Pharmacology Social Sciences Other

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Peningkatan Implementasi 5S Dan Total Productive Maintenance Dengan Menggunakan Pendekatan Dmaic Dan Expert System (Studi Kasus PT. âXYZâ, Jawa Timur) Nafida, Wiluddyana Ghoisi; Wardana, ING; Soenoko, Rudy
Rekayasa Mesin Vol 3, No 3 (2012)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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This research aimed to increase implementation of 5S (Seiri, Seiton, Seiso, Seiketsu, Shitsuke) and Total Productive Maintenance (TPM) in a paper manufacture company using integration of DMAIC (Define, Measure, Analyze, Improvement, Control) approach and expert system. The DMAIC approach was used for obtain main problem why implementation worked ineffectively, root-cause problem, and improvement solution for business process. Expert system was used to help fastening consultation process while the expert of 5S and TPM, which is few in number, have no time to give consultation. Problems often occurred in 5S and TPM implementation during 2011-2012 are Seiso, Seiton, Autonomous Maintenance, and Seiri. Those problems are caused by the process business that only focused in audit system, instead of 5S implementation stage itself whereas many mechanic or electric still have wrong perception about 5S, and also caused by Autonomous Maintenance that not work effectively. The proposed improvement for the problem are to implement 5S activities on daily activities in simple way in order to introduce 5S culture and increase frequency and control of Autonomous Maintenance. Expert system development delivered application (called SIPAMS) that gives recommendation for main problem. SIPAMS help organization member, such as operator, mechanic, electric and others who didnât receive 5S/TPM implementation training, to consult and to learn basic principles of 5S and TPM.Keywords: 5S, Total Productive Maintenace, DMAIC Approach, Expert System

Pengaruh Jumlah Sudu Terhadap Optimalisasi Kinerja Turbin Kinetik Roda Tunggal Pietersz, Richard; Soenoko, Rudy; Wahyudi, Slamet
Rekayasa Mesin Vol 4, No 2 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Indonesia has a great potential to develop hydropower, because Indonesias mountainous topography and hilly and is drained by numerous rivers (large and small), and in certain areas there 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 ofkineticturbine bladesis one ofthe variablesthat affect therotationandtangentialstyle ofaturbine, so the effecton the value ofthe powerand efficiencyofakineticturbine. The results showedthe influence ofthe number ofbladesonthepowerand efficiency ofbladenumber5,7,9and11,where the number ofblades11have a greater influencethan thenumber ofblade5,7, and9.Keywords: waterturbine, number ofblades, Performance

Optimasi Parameter Quenching dan Tempering pada HRP Steel Lokal sebagai Baja Armor Nasional Yurianto, Yurianto; Soenoko, Rudy; Soeprapto, Wahyono
Jurnal Rekayasa Mesin Vol 9, No 2 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Armor steel is a high strength and hardness steel that used to protect against damage by an object, individual or vehicle from the direct pressure of projectile. In Indonesia, this steel is made of hot rolled plate steel and heat treated by quench and temper, the result is Quenched & Tempered Steels used for military components (such as main battle tank and the like) and commercials (such as making heavy equipment and others) manufactures. The problems of this study can be formulated by â€œWhat are the optimum hardness number and toughness that can be achieved by HRP Steel made in Indonesia?â€. This study aims to find the optimum parameter of quenching and tempering heat treatment to the hardness and toughness of HRP Steel made in Indonesia. The method of this study to combining quench and temper heat treatment by optimizing austenitization temperature; holding time of austenitization; tempering temperature; holding time of tempering. Optimization is done by using Minitab 16 Software. The result of the study is austenitization temperature 900 oC; holding time of austenitization 45 minutes; tempering temperature 125 oC; holding time of tempering 45 minutes; hardness prediction 569,96 HVN (and hardness influenced by tempering). For austenitization temperature 900 oC; holding time of austenitization 45 minutes; tempering temperature 175 oC; holding time of tempering 45 minutes; prediction of toughness 30.50 J (and toughness influenced by tempering).

Komposit Hibrid Polyester Berpenguat Serbuk Batang dan Serat Sabut Kelapa Lumintang, Romels C. A.; Soenoko, Rudy; Wahyudi, Slamet
Jurnal Rekayasa Mesin Vol 2, No 2 (2011)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Sawdust coconut trunks of palm trees and fiber coconut coir are two waste materials from the processing of coconuts and coconut tree trunks sawmill waste are plentiful materials can be utilized for producing composites using polyester resins. Both each properties materials as follow polyester resin: liquid in the open air conditions, sawdust coconut and coconut coir fiber properties is lightweight and fragile nature of the polyester adhesive used as a binder (binder) between fiber coconut coir and sawdust coconut palm tree trunks as a filler. The variation volume fraction between the sawdust and coconut trunks of fiber coconut coir in polyester resin influence mechanical properties for each composition of this composite. By comparizing the volume fraction of either polyester, sawdust coconut palm tree trunks and fiber coconut coir (Coir coconut) using tensile test standard ASTM D638-I, and the ASTM D6110 for impact testing. The result of tensile and impact test, obtained that the optimum percentage 30:10 per cent, mean tensile strength on 95.953 N/mm2 , mean elasticity 0,125 % , mean elasticity modulus 768.702 N/mm2, mean absorbed energy 2,679 J and mean impact value 0,068 J/mm2. Keywords: Polyester, Sawdust coconut, coconut coir fiber, mechanical properties

Perilaku Rambat Retak di Daerah Lubang yang Terekspansi pada Aluminium Alloy Syahrizal, Syahrizal; Purnowidodo, Anindito; Soenoko, Rudy
Jurnal Rekayasa Mesin Vol 5, No 1 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Mechanism of crack propagation is done by loading the cycle against the perforated metal material will be difficult to avoid, to fatigue crack growth rate can be a way to expand its peg with the hole that normally uses metal balls as an alternative. By using a materials testing machine type cantilever bending eccentric crank, life time of the materials are determined. Research using the method of cold expansion hole in the aluminum alloy metal material to a hole with a diameter of 5 mm in expansion using pin with variation of ï¦ 5,1 mm, ï¦ 5,15 mm and ï¦ 5,2 mm made that crack found on the side of the hole would be difficult to propagate due to residual stress comparison. The result shows that there are residual stresses around the hole which varies depending on the diameter of the pin. In addition, there is growing tensile residual stress within a certain distance of the specimen being tested resulted in a faster growth rate, this causes the material usage time will be shorter.Keywords: cold expansion hole, materials testing machine, aluminumalloy, comparison residual stress, life time.

Pengaruh Perlakuan Alkali (NaOH) Terhadap Morfologi dan Kekuatan Tarik Serat Mendong Witono, Kris; Irawan, Yudy Surya; Soenoko, Rudy; Suryanto, Heru
Jurnal Rekayasa Mesin Vol 4, No 3 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Chemical modification on fiber by using Natrium Hydroxide (NaOH) solution directly affect to the fiber structure such as changing the chemical composition of the fiber and improve the performance of natural fiber as the composite reinforcement. The purpose of this study is to inverstigate the effects of NaOH solution to the tensile strength and the mofology of Mendong fiber. The concentration of NaOH solution were 2,5% v/v; 5% v/v; dan 7,5% v/v on this experiment. Mendong fiber was soaked for 2, 4 and 6 hours in NaOH solution. The temperature on this study was 26 o C. The tensile strength of Mendong fiber was increased by increasing the NaOH solution concentration and duration of soaking after exceed the concentration of NaOH solution and duration of soaking the tensile strength would be decreased. The highest tensile strength was 497,34 MPa with NaOH solution concentration 5% v/v and the duration of soaking, 2 hours. The roughness of Mendong fiber by soaking in NaOH solution was higher than without soaking in NaOH solution. Soaking on the highest concentration of NaOH solution caused the highest roughness.Keywords: NaOH solution, Mendong fiber, tensile strength, roughness.

Pengaruh Persentase Alkali pada Serat Pangkal Pelepah Daun Pinang (Areca Catechu) terhadap Sifat Mekanis Komposit Polimer Betan, Agustinus Deka; Soenoko, Rudy; Sonief, Achmad AsÂ´ad
Rekayasa Mesin Vol 5, No 2 (2014)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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The community of NTT has used betel tree (Areca Catechu), especially for its base of betel leaf, as a burning material for cooking, as a rope to tie the house roof made from bamboo, and as a device to peel traditional candlenut. Economic value of betel is not high, therefore, the fiber of betel tree as a material to empower the polymer matrix composite was need to be optimized. Betel fiber-based composite is expected to be used as the substitute of concrete brick, red brick, triplex, and cloth hanger because of the favorable mechanical characteristics such as strong, light, environmental friendly, resistant to bending, resistant to water, resistant to heat, and economic. Natural fiber-based composite, especially which is made from betel fiber, has low strength so that chemical treatment is needed. NaOH (alkali) was commonly used as chemical. In this study NaOH is given at different percentage for each fiber. The selected percentages in this experiment are 4%, 5% and 6% NaOH. Result of experiment shows that the highest tensile strength of fiber is found at 5 % NaOH which rates for 195 MPa.Keywords: Areca Catechu, Alkali Percentages, Mechanical Properties

Pengaruh Fraksi Volume Serat Empulur Sagu (Metroxylon sp) dan Presentase Alkali terhadap Pengujian Impak serta Absorpsi Air pada Komposit Berserat Sagu Nanulaitta, Nevada Mario; Soeprapto, Wahyono; Soenoko, Rudy
Rekayasa Mesin Vol 9, No 3 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Human necessities for good material to support daily activity are growing up, especially eco-friendly material.Â Applications such as decoration, interior, until the furniture increased along with the population growth. Sago (Metroxylon sp) as one of the plants and also as one of the staple food in Maluku, this plant thrives in Maluku. To be processed into sago that is ready to eat required the process of extraction of sago tree (Metroxylon sp) trunk that leaves waste sago pith (fiber). In this research the utilization of waste fiber sago pith in use as composite amplifier with matrix is sago starch. Research using natural ingredients as composite maker, is expected to get composite that have good impact strength and good water absorption rate. The composites were made using hand lay up method with variation of volume fraction of sago pith fiber is 30% and 50% with NaOH solution and aquades in alkaline process with percentage comparison of 3%, 5%, 7% and 9% for 120 minutes immersion time. The results of this study found the best impact strength on the composite with a variation of fiber volume of 50% with alkaline process 9% with the highest value on the energy absorbed composite 6,9303 (J) with impact strength 0.0693 (J/mm2). The best water absorption rate is at 8.67% occurring on a 50% fiber fraction variation with a percentage of 9% NaOH alkali process.

Optimalisasi Sistem Perawatan Dan Perbaikan Terencana Mesin Produksi Berdasarkan Analisis Keandalan Pada Pltd Hatiwe Kecil Kota Ambon Demmatacco, Frederik; Soeparman, Sudjito; Soenoko, Rudy
Rekayasa Mesin Vol 4, No 2 (2013)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

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Based on preliminary surveys, PLTD X has been operated long enough so that the generator engines often impaired even cause damages during operation. Even maintenance system contained in the PLTD X also has not done, which means there decrease in the production of electrical power generated.Maintenance activities that have been performed by PLTD X is the replacement of engine components damaged as a rejuvenation effort and overhaul that aims to extend the lifespan of the machine, but it is also the act of Preventive maintenance which aims to treat the machines that do not damage or interruption in operation. The dispute resolution process is the method for analyzing the Reliability Centered Maintenance component failure with FBD, System function and functional failure, FMEA and RCM Decision Worksheet. It also can determine the value of Mean Time To Failure (MTTF) and Mean Time To Repair (MTTR) is used to analyze systems engine maintenance. and as a basis for determining the time interval maintenance and total cost of maintenance.Based on the results of the calculation known critical components such as Cylinder Head, Inlet valve, Gasket, Exhaust Valve Housing, Exhaust Valve. Component maintenance time intervals determined by the RCM method is as follows, Cylinder Head with interval 4458 hours, Inlet Valve with 1601 hour, Gasket with 4682 Hours, Exhaust Valve Housing with 1908 hours, Exhaust Valve with 2238 hour. Critical component consisting of Cylinder Head, Inlet Valve, Gasket, Exhaust Vave Housing and Exhaust Valve is usingSchedulled Restoration Task type of maintenance.Keywords: critical components, decision worksheet RCM, FMEA, PLTD X

Analysis of Temperature Distribution and Rate of Heat Transfer on Cooling System (Simulation) Using Porous Media Su'udy, Ahmad Hamim; Siswanto, Eko; Soenoko, Rudy
Rekayasa Mesin Vol 9, No 1 (2018)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Science and technology continue to innovate to overcome the problem of cooling systems that often arise from heat generated by the engine and how to improve engine cooling function. The porous media system provides a solution for heat transfer with porous media capable of enhancing heat transfer, as well as the effect of natural convection with porosity variation. The high porosity increases the Prandtl value proportional to the Nusselt value, causing the flow value to increase as well. The study of heat transfer with porous media can be applied to engine cooling system using simulation aid, with porosity 10%, 15%, 20%, 25%, 30%. Where the results obtained porosity affect the temperature distribution where the greater the value of porosity the greater the temperature distribution occurs and the greater the porosity then the value Thermal conductivity is smaller, Small thermal conductivity causes the rate of heat transfer is also small.

Co-Authors A.A. Ketut Agung Cahyawan W Abdul Wahid Nuruddin Achmad Noerkhaerin Putra Adrian Maidangkay Agustinus Deka Betan Ahmad Hamim Su’udy Alfeus Sunarso Amanda Nur Cahyawati Amir, Ahmad Ihwan Anindito Purnowidodo Arif Setia Budi, Sofyan Arif Setia Budi, Sofyan Arthur Yanny Leiwakabessy Asroful Anam Azamataufiq Budiprasojo Bachri, Gufron Saiful Danang Triagus Setiyawan Denny Widhiyanuriyawan Dewa Ngakan Ketut Putra Negara Djarot B. Darmadi, Djarot B. Djoko Sutikno Eko Siswanto Febi Rahmadianto Fery Putra PT Frederik Demmatacco Gunawan Pakki 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 Krishna Tri Sanjaya Misbachudin, Muh Misbachudin Moch. Agus Choiron Muhammad Arsyad Muhammad Hermansyah Murti Astuti Murty Astuti Na'ali, Sidi 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 Ronny Tuhumena Setiadhi, David Setiawan, Widia Slamet Wahyudi Soeprapto, Wahyono Soeprapto, Wahyono Sonief, Achmad AsÂ´ad Sri Widiyawati Sudjito Soeparman Sugiarto S Sugiono Sugiono Sujatmiko Sujatmiko Sunu, P.W. Surachman Surachman Surya Irawan, Yudy Surya Irawan, Yudy Sutrisno, Sutrisno Syahrizal Syahrizal Teguh Dwi Widodo Wahyono Suprapto Widhiyanuriyawa, Denny Widya Wijayanti Wiluddyana Ghoisi Nafida Wiyogo Wiyogo Yudy Surya Irawan Yuni Hermawan Yurianto Yurianto Yusuf Novrianto

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