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PENGARUH KETINGGIAN BAK PENANGKAP AIR DAN PANJANG PIPA MASUK TERHADAP HEAD PUMP PADA POMPA HIDRAM Utomo, Gatut Prijo; Arifianto, Muhamad
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Dusun Ketos and Dusun Cabe is 2 (two) of 7 (seven) Dusun in Kulon Wonodadi Ngadirojo Pacitan, EastJava. The problems faced by the community, especially for Ketos Dusun and Dusun Cabe whose territory the formof hills and rocks are prone / difficulty of clean water, clean water to meet the needs of the people using water fromsprings and rainwater. In the dry season, water from springs debitnya reduced, so that less water needs in thevillage. Only water can not be drained using gravity because it is under the township residents located on the hill - ahill at an altitude of 750 m above sea level. The approach offered to solve the problem is by making a catchmentbasin, hydraulic ram and tank water divider.The effectiveness of the performance of hydraulic ram is influenced by several parameters, among others: the lengthof the inlet pipe, inlet pipe diameter, high penagkap tub of water, and heavy exhaust valve. This study aims toobserve and analyze the effect of altitude penagkap tub of water and a long inlet pipe to the pump head on thehydraulic ram. The research method through designing hydraulic ram and analyzing the catchment basin height of2.9 m, 3.2 m and 3.5 m and a length of inlet pipe 18 m, 24 m and 30 m. Tests carried out in the river, precisely inDusun and Dusun Ketos Cabe, Pacitan.Based on the research and analysis it can be concluded that by using the height of basin catchment 3.5 m and 30 mlength of pipe entry could generate more volume and maximum pressure compared with other tests and can producewater flow of up to 6.7 L / min at pump head 173 m with a vertical condition.So the higher the basin catchment (H), the greater the discharge of the hydraulic ram and the pressure generated inthe intake also getting bigger, while for long inlet pipe (L), the length of the pipe entering the greater the volumeand pressure of entering into Conductor flowing through the valve body hidram, because the water is very largeimpulse will open the waste valve and the valve closed waste arrived - arrived to make the flow greater impetus.This is because water is the greatest moment of the collision on H 3.5 m and 30 m L it affect the discharge resultsand the hydraulic ram pump head.Keywords: hydraulic ram, high penagkap tub of water, the length of the pipe entrance

ANALISA PENGARUH PANJANG PIPA GALVANIS DAN DIAMETER BUKAAN KATUP TERHADAP HEAD POMPA PADA POMPA HIDRAM Utomo, Gatut Prijo; Abidin, Khoirul
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Hamlet Ketos and hamlets Cabe is 2 (two) of 7 (seven) hamlet in Wonodadi Kulon, Ngadirojo Pacitan, the problems faced by the community, especially for Hamlet Ketos and hamlets pepper the area of hills and rocks areprone / difficulty getting water net. The approach offered to solve the problem is by making a catchment basin,hydraulic ram and tank water divider.Hydraulic ram works on the principle of water hammer. When the fluid flow is stopped suddenly it changes themomentum of the fluid future will increase the pressure suddenly. Increased pressure is used to lift some of thewater to higher ground. Then designed hydraulic ram which uses the potential energy of the water as a vehicle. Indesigning the authors use the pump inlet pipe length variation of 18 meters, 24 meters and 30 meters and a diameterof the valve opening is full (0.1 meters), 0.08 meters and 0.065 meters. Tests carried out in the river, precisely inHamlet and Hamlet Ketos Cabe, Pacitan.It can be concluded at this test that by using a long inlet pipe diameter of 30 meters and full valve opening is 0.1meters and the discharge pump head has more leverage than other tests, namely the pump head 173 m and waterdischarge (output) generated amounted to 6.68 L / min. So the longer the pipe entrance (L), the higher the pressuredihasilakan, as well as thelarger the diameter of the valve opening, the greater the pressure acting on the hydraulicram, because the greater the time and speed, the momentum was also greater, so the impulse weight the exhaustvalve is closed suddenly make a greater boost the flow exceeds the static pressure inlet pipe, and it affects the pumphead on the hydraulic ramKeywords: hydraulic ram, a long inlet pipe, the diameter of the valve opening

ANALISA PENGARUH VISCOSITAS LUMPUR DAN KECEPATAN ALIRAN FLUIDA DENGAN VARIASI SUDUT PIPA ISAP LUMUR TERHADAP KAPASITAS ALIRAN POMPA PENYEDOT LUMPUR Utomo, Gatut Prijo; Laksana, Ponda
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Today we meet in some places of the cities get flood frequently, it is happen due to several things namely the waterways too small that make water flowing exceed from those drainage, waterways clogged cause of pile ofrubbish, as well as waterways become shallow result in mud sedimentation. From the problem mentioned above,then emerge an idea to design simple tools process that is pipeline installation on mud sucker pump.This research aims to analyzes the effect of mud viscosity and fluid current speed in various of mud suck pipe cornertoward capacity of mud sucker pipe the higher of the flow then the higher of current average capacity, then incurrent average speed and the highest current average capacity happen in mud sucker corner 35Â° that is V =2,168 m/s value of Qout = 0.000621 ,m3/s. While the higher of mud viscosity value then lower its current capacity,then otherwise the lower of mud viscosity value then higher its current capacity. In highest average viscosity (ï¨) = 1,3003 N.s/m2, the value of current capacity (Qout) is small happen in mud sucker pipe corner 60Â° = 0,000523 m/s.While smallest viscosity (ï¨) = 1,1225N.s/m2, , the value of current capacity (Q) is big happen in mud sucker pipecorner 35Â° = 0,000621 m3out/s. And the value of current capacity is smaller then output current capacity is bigger,highest mud current capacity (Qin) happen in mud sucker pipe corner 35Â° that is (Qin) = 0,000281 m/s and produceaverage (Qout) as high 0,000621 m3/s.Keywords : Mud sucker pump, mud sucker corner variation

ANALISA PENGARUH KETINGGIAN BAK PENANGKAP AIR DAN BERAT KATUB BUANG TERHADAP HEAD PUMP PADA POMPA HIDRAM Utomo, Gatut Prijo; Ali Aziz, Moh. Nor
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Ketos Hamlet and Hamlet Cabe is 2 (two) of 7 (seven) Dudun Village Wonodadi Kulon Ngadirojo Pacitan, East Java. The problems faced by the community, especially for Ketos Hamlet and Hamlet Cabe whose territory theform of hills and rocks are prone / difficulty of clean water, clean water to meet the needs of the people using waterfrom springs and rainwater. In the dry season, water from springs debitnya reduced, so that less water needs in thevillage. Only water can not be drained using gravity because it is under the township residents located on the hill -a hill at an altitude of 750 m above sea level. The approach offered to solve the problem is by making a catchmentbasin, hydraulic ram and tank water divider.The effectiveness of the performance of hydraulic ram is influenced by several parameters, among others: the lengthof the inlet pipe, inlet pipe diameter, high penagkap tub of water, and heavy exhaust valve. This study aims toobserve and analyze the effect of altitude penagkap tub of water and heavy exhaust valve on the hydraulic ram pumphead. Methods of research through design and analyze hydraulic ram catcher height tub water is 3.5 m, 3 m and 2.5m and weight of the exhaust valves 16.6 N (1.7 kg), 21.6 N (2.2 kg) and 26.5 N (2.7 kg). Tests carried out in theriver, precisely in Hamlet and Hamlet Ketos Cabe, Pacitan.From the results of the data collection high catchment basin 3.5 m and weight of the exhaust valves 26.5 N (2.7 kg)with a height h = 180 m has a maximum pressure of other testing and discharge of produced water is 7.5 L / min. Sothe higher the catcher bath water (H) the higher the pressure generated in the intake, due to the greater mass andvelocity, the momentum is also getting bigger. As for the valve exhaust (w) with a heavy load and stride lengthconsiderable allow fluid to flow more quickly, so that when the valve sewage closing will surge high enoughpressure that makes impulse flow is greater exceeds the static pressure inlet pipe, and the may result in elevatedworking fluid toward the air tube. And it has an effect on the hydraulic ram pump head.Keywords: hydraulic ram, high penagkap tub of water, the weight of the exhaust valve

ANALISA PENGARUH VISCOSITAS OLI DAN TEMPERATUR OLI TERHADAP PERFORMANCE SISTEM HIDROLIK Utomo, Gatut Prijo; Shofi, M. Tijanus
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 02 (2015): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Viscosity of a liquid is one of the characteristics that determine the amount of fluid resistance to shearforce, the viscosity occurs mainly due to the interaction between the molecules of the fluid in the hydraulic system.This viscosity depends on temperature changes, therefore, use the proper oil viscosity especially those that do notchange much with temperature is needed once the hydraulic system in order to get a good performance. Thehydraulic system is a technology that utilizes liquid, usually oil, to perform an inline movement or rotation. Thissystem works on the principle of Pascal, ie if a liquid subjected to pressure, the pressure will propagate in alldirections with no increase or decrease its power. Hydraulic Trainner machine is a device that works usinghydraulic system applications , to move the tool cylinders using a fluid or oil of type SAE 10 , SAE 30 and so on .This thesis aims to analyze the influence of oil viscosity and oil temperature of the hydraulic system performanceand showed that oil SAE 30 turned out to have a better performance approximately 18 % of the oil SAE 30. It can beconcluded that for Trainner hydraulic machine is better to use oil SAE 10 oil than SAE 30 . Keyword : viscosity, temperature, hydraulic system, SAE 10 oil and SAE 30 oil.

PEMANFAATAN ELEKTROLISA AIR SEBAGAI ALRENATIF PENGHEMAT BAHAN BAKAR SEPEDA MOTOR HONDA 100 CC Utomo, Gatut Prijo; Wijaya, Rhony Mukti
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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The fuel consumption of vehicle increasingly very important, with bigger CC fuel consumption moreincreasing. The continuously fuel consumption will be caused world energy crises indication, Therefore it isnecessary an effort of alternative energy use in order to create good energy balance. In this research tested andcompared between pure gasoline and hydrogen gas-added fuel (HHO) that result in through water electrolyteprocess. From the gas hydrogen (HHO) producer tool testing with vary long variation of electrode, that are : L =60 mm, and L = 80 mm, d = 15 mm with electrode range of 5 mm. Based on testing analysis that pure gasolinewith volume 10 ml in engine circle of 6000 Rpm, produce effective power 4,7 Hp over within 47,3 seconds. Specificfuel consumption (Sfc) as 0,116 kg/hp . h, and thermis efficiency as 48,1%. While fuel with volume 10 ml of hydrogen gas-added fuel (HHO) using electrode L = 60 mm, d = 15 mm with electrode range of 5 mm in enginecircle 6000 Rpm, produce effective power 4,9 Hp over within 66 seconds. Specific fuel consumption (Sfc) as 0,078kg/hp . h, and thermis efficiency as 71,8%. In engine circle and gasoline volume is same and in similar conditionuse electrode L = 80 mm, d = 15 mm with electrode range of 5 mm, resulting in effective power 5,0 Hp over within64 seconds, Specific fuel consumption (Sfc) as 0,079 kg/hp . h, and thermis efficiency as 70,3%. hydrogen gas-addedfuel (HHO) gained from electrolyte result can be increase engine effective power and engine thermis efficiency aswell as fuel consumption (Sfc).Keywords : electrolyte, HHO, fuel, alternative energy

ANALISA PENGARUH VISCOSITAS LUMPUR DAN VARIASI DIAMETER PIPA ISAP LUMPUR TERHADAP KAPASITAS ALIRAN PADA MESIN POMPA PENYEDOT LUMPUR Utomo, Gatut Prijo; Julianto, Wawan
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Nowadays, we find several places in towns which hit by floods, it happen because some things, for example water duct which is gagged because of a bunch of rubbish, a small duct just make the water overload, and a shallowduct because of mud sediment. Because of the problem above, there is an idea to design a process to make a simpletool named piping installation on the pump vacuum of mud. This research method is used to analyze the influence ofmud viscosity and diameter variation of mud suction pipe to the flow capacity of mud vacuum pump machine. Eachof mud viscosity diameter 1,1225 N.s/mÂ², 1,1849 N.s/mÂ². And diameter variable of mud pump vacuum 0,0127m,0,0191m, 0,0254m. The examiner tries to do this observation in each variable for three times. From the statementabove, it can assume that the higher value of mud viscosity the lower of pipeline capacity. In each higher viscosity(Î·) = 1,3003 N.s/mÂ², in diameter of mud pump vacuum 0,0127m, Q = 0,0002886 mÂ³/s, in diameter of mud pumpvacuum 0,0191m, Qoutout = 0,0002975 mÂ³/s, in diameter of mud pump vacuum 0,0254m, Qout = 0,0003667 mÂ³/s.Meanwhile, in trial diameter variation of mud suction pipe, the bigger diameter of mud suction pipe the higher ofpipeline capacity. So the higher of pipeline capacity is happen in diameter of mud suction pipe 0,0254m with Q =0,0003984 mÂ³/s. The higher pipeline viscosity (Q) is happen in diameter of mud suction pipe 0,0254m which is(Qin) = 0,0001784 mÂ³/s and resulting (Q) 0,0003984 mÂ³/s. outinKeywords: Mud pump vacuum, diameter variation of mud suction pipe.

Pengaruh kecepatan putar flywheel pada uji Stabilitas Hull Kapal dengan Aplikasi Gyro Stabilizer Prijo Utomo, Gatut; Tri Utomo, Setyo; Sumantri, Agus; Ali, Baharuddin
MEKANIKA: Jurnal Teknik Mesin Vol 6 No 2 (2020): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Reduksi gerakan rolling pada kapal dapat meningkatkan keamanan operasional kapal. Stabilizer pada kapal dapat didefinisikan sebagai suatu alat untuk mereduksi gerakan rolling daripada kapal saat berada di atas laut berombak. Performa stabilizer eksternal dinilai kurang baik saat kecepatan rendah jika dibandingkan dengan stabilizer internal. Disamping itu potensi bahaya yang ditimbulkan oleh penambahan stabilzer eksternal kemungkinan juga akan lebih besar dikarenakan diperlukan penambahan dimensi untuk instalasinya. Internal stabilizer system seperti gyro stabilizer tidak mempengaruhi penambahan dimensi keseluruhan kapal dikarenakan pemasangan bersifat built-in, serta tidak memerlukan dry docking pada saat pemeliharaan berlangsung. Objektif dari penelitian ini adalah untukmerancang bangun penggunaan gyro stabilizer pada sebuah replika hull kapal dan menganalisanya dengan metode pengujian Decay Roll Test. Dengan memberikan variasi kecepatan putar dari flywheel pada mekanisme gyro stabilizer sebesar 0 RPM, 5000 RPM, 10000 RPM, dan 15000 RPM, terhadap simpangan rolling dari kapal. Proses perekaman grafik rolling dilakukan dengan rotational sensor pada perangkat berbasis sistem operasi android.Hasil pembacaan grafik roll time trace didapatkan periode rolling bertambah panjang seiring dengan penambahan kecepatan putar flywheel, dengan periode terpanjang T? = 1.4858 detik pada putaran 15000 RPM. Sementara dengan metode Froude dan Bertin, didapatkan kenaikan nilai koefisien roll damping tertinggi 62% pada kecepatan putar flywheel 10000 RPM dari kondisi flywheel 0 RPM (Kondisi gyro off). Kata Kunci: Gyro stabilizer, kecepatan putar flywheel, pergerakan rolling, periode, roll damping, decay roll test.

ANALISA PENGARUH TINGGI JATUHAN AIR TERHADAP HEAD POMPA HIDRAM Gatut Prijo Utomo; Supardi Supardi; Edi Santoso
JPM17: Jurnal Pengabdian Masyarakat Vol 1 No 02 (2015)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30996/jpm17.v1i02.547

Pompa hidram merupakan salah satu pompa air yang hemat energi dan ramah lingkungan. Pompa hidram merupakan teknologi tepat guna dalam bidang pemompaan dengan menggunakan tenaga momentum air (water hammer) untuk menaikkan air, sehingga pompa hidram salah satu pompa air yang tidak menggunakan BBM dan listrik. Efektivitas kinerja pompa hidram dipengaruhi oleh beberapa parameter antara lain diameter pipa, tinggi jatuhan air ( reservoir) , katub buang, tabung udara pada pompa hidram, panjang pipa inlet. Penelitian ini bertujuan untuk mengamati dan menganalisa pengaruh tinggi jatuhan air Â pada pompa hidram terhadap debit pompa dan tinggi pemompaan. Metode penelitian ini melalui perancangan instalasi pompa hidram dan pengamatan pengaruh ukuran tinggi jatuhan air (2,9 m, 3,2 m, 3,5 m ),Â terhadap nilai tekanan (H) pompa hidram. Pengujian ini dilakukan di LAB Proses Produksi (PP) Universitas 17 Agustus 1945 Surabaya. Semakin tinggi jatuhan air pada pompa hidram, maka heda tekan pada pompa hidram Â yang dihasilkan akan semakin tinggi. Jadi nilai tekanan yang ada di dalam pompa hidram dengan nilai yang lebih maksimal adalah head yang di hasilkan dengan nilai rata â€“ rata (H) 17 bar atau setara 173 m dengan pipa output 0,5 inchi dan debit air yang dihasilkan dengan rata â€“ rata (Q) 6,7 liter/menit. Hal ini disebabkan karena momen tumbukan air yang terbesar pada ketinggian jatuhan 3,5 m.Kata kunci : Pompa Hidram

ANALISA KEGAGALAN DAN REDESAIN ROLLER TEMBAGA STUDI KASUS PT. SMELTING Eka Marliana; Gatut Prijo Utomo; Saiful Fuad
ELEMEN : JURNAL TEKNIK MESIN Vol 8 No 2 (2021)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v8i2.170

Penelitian ini dilakukan dengan tujuan untuk menganalisa kegagalan pada alat roll tembaga yang sudah ada saat ini. Kegagalan sering terjadi pada komponen pen roll nomor 2. Selanjutnya analisa tersebut akan digunakan untuk melakukan redesign pada bagian pen roll nomor 2 dari alat pengeroll tembaga agar memiliki life cycle yang lebih tinggi. Proses redesign akan diawali dengan membuat sketsa alat roll tembaga berdasarkan dimensi contoh barang yang diberikan, dari hasil sketsa tersebut akan dibuat 2D dan 3D CAD modelling dengan menggunakan software Autodesk Inventor untuk menyesuaikan dimensi alat ketika dirakit. Setelah hasilnya sesuai, proses berikutnya adalah menganalisa desain alat yang sudah ada sekarang menggunakan Finite Element Method dan teori kegagalan Goodman. Analisa dilakukan dengan menggunakan software Ansys. Dalam penelitian ini dilakukan redesain dengan 5 material yang berbeda. Berdasarkan analisa statis yang dilakukan, didapatkan bahwa life cycle minimum paling tinggi adalah dengan material AISI 4130.

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