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Mekanika : Jurnal Teknik Mesin
Published by Universitas 17 Agustus 1945 Surabaya
ISSN : 24603384     EISSN : 26863693     DOI : https://doi.org/10.12345/jm.v8i2
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Focus and Scope Mekanika: Jurnal Teknik Mesin accepts conceptual articles or research results including: Aerodynamics and Fluid Mechanics Biomechanics Combustion and Energy Systems Design and Manufacturing Dynamics and Control Materials Science and Engineering Vibrations Acoustics and Fluid-Structure Interaction
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 117 Documents
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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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Abstract

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 VARIASI TEMPERATUR DAN WAKTU AGING PERLAKUAN PANAS T6 TERHADAP FAKTOR EFETIVITAS REM (FER) DAN KEKERASAN PADA PIRINGAN CAKRAM DARI BAHAN KOMPOSIT ABU DASAR BATU BARA Seputro, Harjo; Fanani, Ahmad Arif
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Be able to change the different characteristics and potential of these results, showing that the Metal Matrix Composite showed an increase in physical and mechanical at any properties. With increasing weight percentage ofparticles in the matrix aluminum metal reinforcement makes a low wear rate against diks manufacture brake.Aluminium composite that bottom ash coal with Mg alloy and SiC factor that could affect the properties of thecomposite, particle distribution amplifier in a metal matrix. From the results of research to get the final hardnesstesting and FER. Effect of aging temperature on the value of FER and violence is in the range of temperature that isvalidated, the higher the aging temperature FER value increases, so does the value of violence. The highest FERvalue for 1.34 reached tepmeratur aging 200 0C and highest hardness value is achieved at temperatures of 180 C.Effect of aging time variation of the value of FER and violence is at varied time spans, the longer aging FER valuethus increased, so did the value of violence. The highest FER value of 1.34 was achieved in a period of 7 hours andachieved the highest hardness value of 7 hoursKata kunci : Aluminium komposit abu dasar batu bara.
ANALISA PENGARUH VARIASI TEBAL PLAT ALUMINIUM PADA DC INVERTER DENGAN WAKTU TERHADAP TEGANGAN LISTRIK PADA BLOK MESIN HONDA CB Martini, Ninik; Zaenudin, Akhmad
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 02 (2015): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Starting from the daily grind that use motor vehicles for work, college, touring and also the use of a smartphone / handphone are already obliged to carry anywhere. When the researchers drive and use a smartphone /mobile phone while traveling, researchers imagined problems smartphone battery / handphone that need filled, ifusing the power of banks and even then only to help a moment, for that is the idea in the course of using a motorvehicle as well to fill the batteries of smartphones at once, but do not overload electrical vehicle itself. Therefore,researchers thought why do not utilize heat energy vehicle engine as a source of electrical energy, for theresearchers tried to create a tool to convert the heat engine into electrical energy that is efficient to use fill thebatteries smartphone / mobile phone while traveling, Dc inverter is a device to increase the voltage of the lowvoltage dc power becomes greater. Researchers used thermoelectrically (Peltier) as a producer of electric voltageby utilizing engine heat is wasted through the medium of an aluminium plate as a heat sink, so it can be used tocharge the battery power bank or smartphone. In the study researchers used three (3) aluminium plate thicknessvariation of 2.3 and 4mm at the time of testing 2,4,6,8 and 10 minutes. From research to engine speed 1100 rpm for10 minutes and the heat sink as a cooling medium thermoelectrically. Then obtained the rate of transfer of heatconduction and convection heat transfer rate on the 2mm thick aluminium plate that is qk = 10078, w and w qc =0.38, so that the rate of heat transfer is conduction and convection heat transfer rate of most good.Keywords: Conduction , convection , thermoelectri
KAJI EKSPERIMENTAL PENGARUH VARIASI DIAMETER NOZZLE DAN DIAMETER RUNNER TERHADAP DAYA DAN EFISIENSI MODEL TURBIN PLETON ., Supardi; Pramana, Chandra
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 02 (2015): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Pelton turbine is one type of impulse turbine, type of water turbine which works to change the available whole energy of water such as pressure, potential, and speed into kinetic energy to rotate turbines. Runner whichconsist of a number of blades is the main component on Pelton turbine when the turbine rotates because the force ofwater at high speed out of nozzle. Impulse reactions occur because the water jets hit the blades causing torque ofturbine shaft causing runner will continue rotates for object hit the blades. Experimental assessment was conductedto investigate effect of nozzle diameter variations as a media to transmit water and runner diameter variations asthe main media for generating mechanical energy in power and efficiency of the Pelton Turbine models in FluidLaboratorium August 17, 1945 University of Surabaya as a prototype model of Micro Hydro Power Plant( MHPP ). Stages of research was done by designing and planning some variation of the nozzle diameter and runnerdiameter with reference using head and flow capacity of available water pump. Specified parameters and variablesused for experimental assessment is single nozzle with diameter 0,006 m and 0,009 m and runner with diameter 0,15m, 0,17 m and 0,19 m. Blades used half cylinder shape with the specifications, width 0,036 m, length 0,027 m, depth0,00081 m, blade gap width 0,001 m, and the distance of center water emmision to blade tip 0,00135 m. From thetest results, variations of nozzle with diameter 0,006 m and runner with diameter 0,15 m produces the largestturbine power 49,53 watt, the best turbine efficiency of 87,97%, and the largest generator power 10,56 watt.Meanwhile, the variation nozzle with diameter of 0,009 m and runner with diameter 0,15 m, generating the bestgenerator efficiency 52.43%. From the characteristics graph of Pelton turbines, found same trend with the theorythat the efficiency of the turbine decreasing after reaching the maximum efficiency speed ratio of 0,46 and higherturbine efficiency directly proportional to turbine power produced.Keyword : Pelton Turbine, Nozzle, Runner, Power, Efficiency
PENGARUH DAN SUDUT KAMPUH PENGELASAN TERHADAP KEKERASAM DAN KERETAKAN PADA LAS SMAW DENGAN ELEKTRODA E7018 Sasono, Djoko; Kusuma, Indra
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 02 (2015): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Pengaruh arus dan sudut kampuh Pengelasan Terhadap Kekerasan dan keretakan pada Las SMAW Dengan Elektroda E7018.”Comparison journal with Joko Santoso, 2006. TM, FT, UNNES "Welding current Effect AgainstTensile Strength and Toughness Las SMAW with E7018 Electrodes" .Penelitian uses low alloy steel materials,materials treated with a variety of welding current 100 Ampere, 130 Ampere and 160 Amper using reverse polarityDC SMAW welding electrode E 7018 with a diameter of 3.2 mm. Seam type used is seam V with an angle of 60 °. The value of tensile strength and yield stress to specimen quality force tensile low alloy steel welding current 160Ampere group the highest compared with those variations welding current of 100 amperes and 130 amperes and rawmaterials group. Its value has increased by 44.84 MPa to values of tensile strength and 84 MPa for the yield stressvalue of the raw materials group. The value of the extension and increased cross-section reduction compared to thegroup and the group 130 100 Amper Amper, but decreased compared with those raw materials.This study aims to determine the effect of welding current against violence, the corner seam welds and cracks levels1,2 and 3 on the SMAW welding electrode E7018. This study uses a low alloy steel material treated wi th a variety ofwelding currents of 80 A and 180 A with a seam angle of 60 ° and 80 °, using SMAW welding DC polarity inverted with E7018 electrode diameter of 3.2 mm. DC reverse polarity that the electrode holder is connected to the positive pole and the metal stem is connected tothe negative pole. Specimens carried hardness testing and cracking levels 1,2 and 3, Hardness of weld joint highestin the group of specimens of 60 ° to 180 A which is worth 181 HB for angle of 80 ° to 180 A and 181 HB, the lowe stvalue obtained angle of 80 ° with 80 A whose value is 141 HB, to an angle of 60 ° to 80 A HB 156 value from thedata above is taken the average - average, for the position of HAZ According to the results of this study concludedthat with the variation of the welding current is very influence in welding materials and therefore contributes toviolence. Keywords are current, angle, SMAW, violence, rift, E7018.
ANALISA PENGARUH VISCOSITAS LUMPUR DAN VARIASI DIAMETER PIPA ISAP LUMPUR TERHADAP KAPASITAS ALIRAN PADA MESIN POMPA PENYEDOT LUMPUR Supardi, Supardi; Julianto, Wawan
MEKANIKA: Jurnal Teknik Mesin Vol 2 No 02 (2016): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

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 shallow duct because of mud sediment. Because of the problem above, there is an idea to design a process to make a simple tool named piping installation on the pump vacuum of mud. This research method is used to analyze the influence of mud viscosity and diameter variation of mud suction pipe to the flow capacity of mud vacuum pump machine. Each of mud viscosity diameter 1,1225 N.s/m², 1,1849 N.s/m². 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 statement above, it can assume that the higher value of mud viscosity the lower of pipeline capacity. In each higher viscosity (η) = 1,3003 N.s/m², in diameter of mud pump vacuum 0,0127m, Qout = 0,0002886 m³/s, in diameter of mud pump vacuum 0,0191m, Qout = 0,0002975 m³/s, in diameter of mud pump vacuum 0,0254m, Qout = 0,0003667 m³/s. Meanwhile, in trial diameter variation of mud suction pipe, the bigger diameter of mud suction pipe the higher of pipeline capacity. So the higher of pipeline capacity is happen in diameter of mud suction pipe 0,0254m with Qout = 0,0003984 m³/s. The higher pipeline viscosity (Qin) is happen in diameter of mud suction pipe 0,0254m which is (Qin) = 0,0001784 m³/s and resulting (Qout) 0,0003984 m³/s.Keywords: Mud pump vacuum, diameter variation of mud suction pipe.
PENGARUH KERAPATAN PARANET TERHADAP PRODUKTIVITAS ALAT PENANGKAP KABUT DI DUSUN NGLURAH WONODADI KULON KAB. PACITAN Nafi, Maula; Aziz, Muhammad
MEKANIKA: Jurnal Teknik Mesin Vol 3 No 02 (2017): December
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Beberapa daerah di Indonesia, khususnya di daerah dataran tinggi masih dikategorikan sebagai daerah kekurangan air. Hal tersebut dikarenakan kontur tanah yang merupakan bebatuan, dan sumber air tanah yang terlalu dalam, lebih dari 50 meter, sehingga sumber air yang digunakan warga pada umumnya hanya dari sumber mata air. Hal yang bertolak belakang, di daerah dataran tinggi mempunyai potensi kabut yang sangat tinggi. Pada dasarnya, kabut adalah butiran air yang mengumpul dan belum menguap ke udara. Penelitian kali ini bertujuan untuk memanfaatkan paranet dan difabrikasi sebagai alat penangkap kabut, sehingga air dari kabut tersebut dikumpulkan dan dapat dimanfaatkan untuk kebutuhan rumah tangga. Penelitian dikhususkan di Dusun Nglurah, Desa Wonodadi Kulon, Kecamatan Ngadirojo, Kabupaten Pacitan. Alat penangkap kabut dibuat di dua titik dengan potensi kabut tertinggi, kemudian diambil data berapa air yang dapat ditampung selama lima bulan. Hasil menjanjikan dapat dilihat pada alat penangkap kabut pertama, karena lokasinya memang lebih tinggi dan mempunyai potensi kabut lebih banyak. Rata-rata produktivitas pada alat penangkap kabut pertama adalah 3,6 liter/m2/hari, dibandingkan dengan alat penangkap kabut kedua yaitu 3,2 liter/m2/hari. Secara umum, prototype alat penangkap kabut berfungsi dengan baik..Kata kunci: air, alat penangkap kabut, paranet, produktivitas kabut
ANALISA LAJU PANAS RATA-RATA PADA ALIRAN MASSA GARAM TERHADAP PENGARUH PUTARAN ULIR DAN BUKAAN KATUP REGULATOR GAS ELPIJI DI MESIN PENGERING GARAM YODIUM Martini, Ninik; Khadarisman, Erick
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Dry season, especially on the industrial salt drying small one "ocean salt production" Banjarwati village, Paciran, District of Lamongan. drying the salt by means of drying the salt air is free and takes a long time reaches afull day to get the salt with an appropriate water content before being packed and sold. during the rainy season saltdrying using oven-rise that is with a simple tool that uses a direct ignition from below the results of these tools lessthan the maximum drying them salt is still dirty, charred and only produce 200 kg of salt ready for use per day,while the demand is very high as 1,000 kg / day and is unable to meet consumer demand every rainy season comes. This study aims to help small industries during the rainy season by making, "iodine salt drying machine"Conductresearch methods on the tool with variable rotation screw shaft including is15rpm, 20rpm, 24rpm and valve opening(valve) with LPG gas regulator ¼ open valve, ½ open valve, 1 open valve.After analysis on the results of the testingare the best tool that is "open valve ½ (valve) LPG gas regulator and a round screw shaft 20 rpm" and get a hotpace (q) of 666.4 joules / second at 20kg of salt mass flow rate, and levels of water an average of 5% in accordancewith the quality of iodized salt consumption (MOH, 2005). This analysis can be used as a solution to increase theproduction capacity of salt during the rainy season arrives. so that the maximum drying by using "iodine salt dryingmachine" compared with the air drying salt-free.Keyword :
KAJI EKSPERIMENTAL PENGARUH VARIASI DIAMETER NOZZEL DAN JUMLAH SUDU TERHADAP DAYA DAN EFFISIENSI PADA PROTOTYPE TURBIN PELTON DI LAB. FLUIDA ., Supardi; Ridwan, Moh.
MEKANIKA: Jurnal Teknik Mesin Vol 1 No 01 (2015): July
Publisher : Program Studi Teknik Mesin, Universitas 17 Agustus 1945 Surabaya

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Abstract

Review of experimental effect of variations in the diameter of the nozzle and the amount of bucket on thepower and the efficiency on prototype pelton turbine in the Lab. Fluid. The aim of this study wants to know the effectof variations in the diameter of the nozzle and amount of the bucket to the power and efficiency of the existing peltonturbine prototype in the laboratory Fluid in the Pico-hydro scale. The steps in this research include the study ofliterature and field studies, designing, manufacturing of test equipment, testing, data analysis, and conclusions.Variation is done using nozzle diameter (dn) 6 mm and 9 mm, β2 at 165o, amount of bucket (Z) 12 units, 17 units,and 22 units. For the runner has a large diameter of 150 mm, while for the power plants or generators using spooland magnet on motorcycles. Results of this testing is the largest input power (Pin) at d 6 mm with a value of 46.81watts. The largest turbine power (Pt) and turbine efficiency (ηt) at dnn = 6 mm with Z = 12 unit with value P= 40,34watt and ηt =86,18 watt. The largest generator power (Pgen) at d = 6 mm with Z = 22 unit with value 9,6 watt,meanwhile for the largest generator efficiency (ηgenn) and the largest efficiency system (ηsis) at d= 9 mm with Z = 22unit with value ηgen = 54,24 % and η= 25,82 %.Keywords: Pelton Turbine, Bucket, Nozzle, Power and Efficiency
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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Abstract

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/m², 1,1849 N.s/m². 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(η) = 1,3003 N.s/m², in diameter of mud pump vacuum 0,0127m, Q = 0,0002886 m³/s, in diameter of mud pumpvacuum 0,0191m, Qoutout = 0,0002975 m³/s, in diameter of mud pump vacuum 0,0254m, Qout = 0,0003667 m³/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 m³/s. The higher pipeline viscosity (Q) is happen in diameter of mud suction pipe 0,0254m which is(Qin) = 0,0001784 m³/s and resulting (Q) 0,0003984 m³/s. outinKeywords: Mud pump vacuum, diameter variation of mud suction pipe.

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