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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
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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Peningkatan Implementasi 5S Dan Total Productive Maintenance Dengan Menggunakan Pendekatan Dmaic Dan Expert System (Studi Kasus PT. “XYZ”, 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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Abstract

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 didn’t 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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Abstract

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
PENGARUH RAKE ANGLE NETRAL TERHADAP KEKASARAN PERMUKAAN PADA PROSES BUBUT MATERIAL GETAS BATU MARMER Hermawan, Yuni; Soenoko, Rudy; Surya Irawan, Yudy; Arif Setia Budi, Sofyan
Proceeding SENDI_U 2017: SEMINAR NASIONAL MULTI DISIPLIN ILMU DAN CALL FOR PAPERS
Publisher : Proceeding SENDI_U

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Abstract

Proses bubut merupakan proses pemesinan yang banyak digunakan dalam komponen-komponen mesin (logam). Setiap proses pembubutan mempunyai karakteristik tertentu dari material yang dihasilkan. Untuk memperoleh karakteristik-karakteristik yang sesuai dengan keinginan maka diperlukan rancangan yang tepat. Karakteristik permukaan suatu benda kerja memegang peranan penting pada pembuatan komponen-komponen mesin. Selain digunakan untuk membuat komponen-komponen mesin, proses bubut dapat juga digunakan untuk membuat benda-benda putar yang terbuat dari non logam, salah satunya adalah batu marmer. Pada penelitian ini dilakukan pemesinan pada material batu marmer dengan panjang 200 mm dan diameter 40 mm, putaran spindel 400 rpm dan kedalaman potong 1 mm. Proses pemesinan dilakukan pada mesin bubut semi-otomatis Maximat dilakukan tanpa cairan pendingin dengan pahat insert karbida “Widia YG6” dengan rake angle 0o (netral). Setelah benda kerja dibubut, kemudian benda kerja diukur kekasaran permukaanya dengan mengunakan alat uji kekasaran. Hasil dari penelitian ini menunjukan bahwa nilai kekasaran permukaan 3.726 μm untuk posisi pengukuran 150 mm dari chuck mesin dengan simpangan sebesar 0.773 μm. Nilai kekasaran permukaan 3.24 μm untuk posisi pengukuran 100 mm dari chuck mesin dengan simpangan sebesar 0.42 μm. Nilai kekasaran permukaan 2.977 μm untuk posisi pengukuran 50 mm dari chuck mesin dengan simpangan sebesar 0.391 μm. Rake angle netral menghasilkan rata-rata kekasaran permukaan sebesar 2.789 μm dengan nilai R2 sebesar 96.37%. Kata kunci: proses bubut, batu marmer, rake angle dan kekasaran permukaan.
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (438.061 KB) | DOI: 10.21776/ub.jrm.2018.009.02.11

Abstract

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 “What are the optimum hardness number and toughness that can be achieved by HRP Steel made in Indonesia?”. 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).
ANOVA RATA-RATA DAN OPTIMASI FAKTOR-FAKTOR TAGUCHI UNTUK PERBAIKAN KUALITAS AIR PDAM TIRTA MON PASE LHOKSUKON Zaini, Halim; Soenoko, Rudy; Indrayadi, Bambang
Jurnal Sains dan Teknologi Reaksi Vol 9, No 1 (2011): Jurnal Sains dan Teknologi Reaksi
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jstr.v9i1.211

Abstract

Kualitas air PDAM Tirta Mon Pase secara umum belum memenuhi standar air minum. Hal ini dibuktikan dengan adanya keluhan pelanggan terhadap kualitas air minum yang diproduksi terutama menyangkut tingkat kekeruhan air masih di atas ambang batas tertinggi kualitas air minum yaitu diatas 5 NTU (Nephelometric Turbidity Unit). Guna memperbaiki kualitas air minum PDAM Tirta Mon Pase perlu dilakukan pengkajian terhadap faktor-faktor yang dapat mempengaruhi proses penurunan tingkat kekeruhan air. Salah satu metode percobaan yang dapat diterapkan adalah metode desain percobaan Taguchi. Faktor-faktor penelitian desain percobaan Taguchi tentang proses produksi air PDAM terdiri dari faktor dosis koagulan (level 1: 25 ppm dan level 2: 40 ppm), pH (level 1: pH 6,7 dan level 2: 7,3), pengadukan cepat (level 1: 100 rpm dan level 2: 120 rpm), waktu pengadukan cepat (level 1: 1 menit dan level 2: 3 menit), pengadukan lambat (level 1: 25 rpm dan level 2: 45 rpm), waktu pengadukan lambat (level 1: 15 menit dan level 2: 30 menit) dan waktu pengendapan (15 menit dan 30 menit). Hasil penelitian menunjukkan bahwa penurunan tingkat kekeruhan air PDAM sangat dipengaruhi oleh faktor dosis koagulan, waktu pengadukan lambat dan pH operasi. Berdasarkan hasil percobaan Taguchi dan percobaan konfirmasi proses produksi air PDAM untuk menurunkan tingkat kekeruhan air, kondisi optimum berlangsung pada dosis koagulan 40 ppm, pH operasi pada pH 7,3 dan waktu pengadukan lambat 30 menit.Kata Kunci : Kualitas air, Tingkat kekeruhan air, Kondisi optimum.
PENGARUH RAKE ANGLE NETRAL TERHADAP KEKASARAN PERMUKAAN PADA PROSES BUBUT MATERIAL GETAS BATU MARMER Hermawan, Yuni; Soenoko, Rudy; Surya Irawan, Yudy; Arif Setia Budi, Sofyan
Proceeding SENDI_U 2017: SEMINAR NASIONAL MULTI DISIPLIN ILMU DAN CALL FOR PAPERS
Publisher : Proceeding SENDI_U

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Proses bubut merupakan proses pemesinan yang banyak digunakan dalam komponen-komponen mesin (logam). Setiap proses pembubutan mempunyai karakteristik tertentu dari material yang dihasilkan. Untuk memperoleh karakteristik-karakteristik yang sesuai dengan keinginan maka diperlukan rancangan yang tepat. Karakteristik permukaan suatu benda kerja memegang peranan penting pada pembuatan komponen-komponen mesin. Selain digunakan untuk membuat komponen-komponen mesin, proses bubut dapat juga digunakan untuk membuat benda-benda putar yang terbuat dari non logam, salah satunya adalah batu marmer. Pada penelitian ini dilakukan pemesinan pada material batu marmer dengan panjang 200 mm dan diameter 40 mm, putaran spindel 400 rpm dan kedalaman potong 1 mm. Proses pemesinan dilakukan pada mesin bubut semi-otomatis Maximat dilakukan tanpa cairan pendingin dengan pahat insert karbida “Widia YG6” dengan rake angle 0o (netral). Setelah benda kerja dibubut, kemudian benda kerja diukur kekasaran permukaanya dengan mengunakan alat uji kekasaran. Hasil dari penelitian ini menunjukan bahwa nilai kekasaran permukaan 3.726 μm untuk posisi pengukuran 150 mm dari chuck mesin dengan simpangan sebesar 0.773 μm. Nilai kekasaran permukaan 3.24 μm untuk posisi pengukuran 100 mm dari chuck mesin dengan simpangan sebesar 0.42 μm. Nilai kekasaran permukaan 2.977 μm untuk posisi pengukuran 50 mm dari chuck mesin dengan simpangan sebesar 0.391 μm. Rake angle netral menghasilkan rata-rata kekasaran permukaan sebesar 2.789 μm dengan nilai R2 sebesar 96.37%. Kata kunci: proses bubut, batu marmer, rake angle dan kekasaran permukaan.
Analysis of Pressure and Flow Patterns on Two-Phase (Air-Water) Flow in Horizontal Pipes With Scalloped Groove Bachri, Gufron Saiful; Soenoko, Rudy; Widhiyanuriyawa, Denny
SENATIK STT Adisutjipto Vol 5 (2019): Peran Teknologi untuk Revitalisasi Bandara dan Transportasi Udara [ISBN XXX-XXX-XXXXX-
Publisher : Sekolah Tinggi Teknologi Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/senatik.v5i0.350

Abstract

The groved surfaces are widely researched to reduce pressure drop and control a flow on the surface. In applicative fluids flow is turbulen. So, the grove addition capable of affecting the boundary layer condition near the wall pipes. This will greatly determine the pressure drop and the flow patterns that occur during the fluids flow. The purpose of this researched is to analyse the impact of the number of grooves in pipes against the pressure drop and the occurred flow patterns. In this researched, we used 3 pipes, which total of grooves were 4,8,16 and the pipes without grooves that used as comparator. The observed flow was two phases flow ( air-water). The researched pipes used acrylic pipes with diameter of 1 inch and length of 100 cm with the groove used was type of scalloped groove. Pressure drop occurs in all of the grooves ; 4,8, and 16. The highest pressure drop decrease occurred in groove 16. When there was drop in pressure drop in every single of groove, in low air discharge, bubbly that firmed was more tightly without making slug flow. When the debit was getting bigger, the bubbly was reduced and followed by the emergence of slug flow. The changes in water debit in the decrising of pressure drop in every single of drop, shows the dencity between the bubbly and slug flow that firmed
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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Abstract

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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Abstract

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  5,1 mm,  5,15 mm and  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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Abstract

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.
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 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