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INDONESIA
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 15 Documents
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Search results for , issue "Vol 1 No 02 (2015): December" : 15 Documents clear
ANALISA PENGARUH VARIASI BEBAN PENGEREMAN DAN VARIASI KECEPATAN PUTAR (RPM) TERHADAP PERUBAHAN STRUKTUR MIKRO PIRINGAN CAKRAM DARI BAHAN AL ABU DASAR BATU BARA Seputro, Harjo; Wijayanto, Arief
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

Material cost and lightweight to be a requirement in the automotive world. This requirement led toinnovations in the manufacture of Metal Matrix Composite (MMC). Aluminum-based MMC with reinforcement Abucoal base developed as inputs for industries, especially the automotive industry because the material is cheap andeasy to come by in the can. The purpose of this study to determine the influence braking loads and rotational speedvariai to change the microstructure of the base material disk disc al - ash coal. The research activities begins theprocess of making a composite with the method of HAS, then how is generated into a disk disc, the next disc-discdiperlakuan T6 heat, further testing with load variations braking and speed, turn while braking loads are used 3kg,4kg, 5kg and with the rotational speed 600rpm , 700rpm, 800rpm. The test results braking ratio of disc-disc originalwith disk disc al - bottom ash coal in comparison type of disc discs al - bottom ash coal produces a highertemperature than the disc-disc original because of the heat capacity on the disc al - bottom ash coal is greatercompared to the original disk disc. So that the braking load variations and variations in rotational speed (rpm), themicro structure changes that occur are from the compound turned into Al2SiO4 Al2MgSiO4 these changes occur asa result of the heat that builds up during braking.Keywords : composites, variation of speed, braking loads, microstructure.
KAJI EKSPERIMEN UMUR LELAH POROS PADA AL 6061-ABU BATUBARA YANG MENDAPAT PERLAKUAN PANAS Achmad, Zainun; Prasetya, Hendrawan Harry
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

Fatigue is one of the main causes of failure contruction. Usually material fatigue fracture occurs in poros.Poros a machine element that serves to connect from one machine element to other element . A shaft having adifferent material composition-this different.research has the objective to study the fatigue life of a shaft with amaterial 6061-coal bottom ash results that occur in the home foundry industry after heat treatment t6 and therewere no treatment is done, the results of the specimens to be tested weariness.The method used to determine the fatigue life of a material shaft 6061-ash coal rotary bending fatigue testaccording to standard JIS Z2274 with weights 0.7 σu and 0.9 σu of tensile strenght obtained from tensile test.The results of fatigue testing and calculation methods of statistical probability of 10 % , 50 % and 90% of materialsthat are subjected to heat for 2 hours with a load of 0.9 σu with a probability of 90 % that has the shorte st fatiguelife and fatigue life is highest specimens without heat treatment with a load of 0.7 σu with a probability of 10 % .This percentage has increased 2x specimen lelah.Jadi age even make the heat treatment cycle of the material to below.Keyword : Fatigue life ,Alumunium,Heat treatment
PENGARUH DIAMETER SCREW SEBAGAI MIXER TERHADAP KAPASITAS PRODUKSI MIE BASAH ., Muhyin; Suryanto, Wsnu
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

Wet noodles as one of the basic human needs, has a fairly large market, one where the processing of wet noodles is in the area of Surabaya precisely in the village alley jojoran 5 surabaya.dari field survey results in thetreatment process using a manual process with a capacity of 15kg / jam.Untuk increase capacity should bedeveloped and implemented appropriate technology, so came the idea to create a tool maker author noodles using ascrew conveyor system with motor in order to increase the production capacity of wet noodles .. In this case theauthor analyzes the analysis of the influence of rotation of the motor and the diameter of the screw as a mixer to wetnoodle production capacity.In this study discussed the analysis of motor rotation and diameter of the screw as amixer for basah.dimana noodle production capacity of analysis and diameter divariabelkan round following around of 20 rpm, 40 rpm, 60 rpm and a screw diameter of 60 mm, 70 mm, 80 mm. Analysis of the data and theresults of the test showed that the average maximum capacity with appropriate quality standards are achieved wetnoodle consumption of 48,9kg / h on lap 20 rpm and a screw diameter of 80 mm.Keywords : wet noodle, screw diameter, round and capacity
ANALISA PENGARUH PUTARAN DAN JARAK (PITCH) PISAU TERHADAP KAPASITAS PRODUKSI LIMBAH SAWI PADA MESIN PERAJANG SAWI Sulistyono, Djoko; Triyono, Achmad
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

Mustard is a group of plants of the genus Brassica leaves or flowers are used as food (vegetables), both fresh and processed. Mustard Brassica species include some that are sometimes similar to each other. Onecommodity farmers in village Parengan, Krian, Sidoarjo every day requires a mixture of vegetable waste mustard asanimal feed ingredients. Livestock alone is the main food forage. Green feed cattle, namely waste mustard. Forageplays a very important because it contains all the substances necessary livestock. One of them is from the green feedlivestock waste that much mustard in the traditional market. In East Java, many home a chicken farmer, in thehamlet Parengan Kraton Sidoarjo district is very famous for animal breeding chicken. Productivity breeders requirewaste mustard chicken with the chopped in the hamlet Parengan Kraton Krian Sidoarjo can not meet the needs ofthe market, the acquisition of waste results from the traditional markets of 50-80 kg / day, were able to be processed5-15 kg / day using traditional tools ie by perajangan mustard waste manually. Some efforts to increase productionhave been made to spur the development of the farmer, from the conventional to modern process (machine).Therefore conducted research with the title : analysis of effect of round and distance (pitch) pisau to wasteproduction capacity in the machine chooper mustard mustard in the area. In this study the authors calculate thechopper machine design capacity mustard waste by means of varying the distance a knife (0.03 m; 0.04 m; 0.05 m)and the rotation axis (200Rpm, 300Rpm, 400rpm), while the fixed blade diameter, so that obtain optimal results andto determine the engine power is needed, with reference to 250 kg / h, and the conveniences expected chopperengine testing conducted to determine the waste mustard in actual production capacity, and compared with theproduction capacity of the calculation results. The achievement of a production capacity of 247.67 kg / hour is themost excellent results of chopped cabbage waste, using waste mesinperajang mustard dimensions: Diameter 0.28mknife, round knife 300Rpm with a distance of 0.04m. The results showed that the production capacity of wastemustard be 244.28 kg / h (± 250kg / h) using mustard waste chopper machine. Thus the research conducted by thepublic is expected to be implemented in order to further increase production and able to serve the market demand.Keywords : Waste chopper mustard, Distance knife, Round the machine.
ANALISA PENGARUH VARIASI (% BERAT) MAGNESIUM DAN VARIASI TEMPERATUR OKSIDASI PADA PROSES ELECTROLESS PLATING ABU DASAR BATUBARA TERHADAP DENSITAS DAN POROSITAS BAHAN PROPELLER DARI KOMPOSIT ALUMINIUM – ABU DASAR BATUBARA Seputro, Harjo; Prasetio, Budi
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

The composite is a combination of two or more different materials on condition the bonding surfacebetween the two materials. One type of composites that much attention is metal matrix composites (KML). In thisstudy investigated how the influence of variations of Mg and temperature variations of oxidation on the density andporosity of the composite amplifier undergo a process of electroless plating with variation (% by weight) ofmagnesium 0,005, 0,010, and 0,015% and variations in temperature oxidation of 100, 200 and 300 C and at holdfor 3 hours, then made composite by Stir Casting casting method. Based on the average chart shows that increasingthe value of (% by weight) of magnesium and oxidation temperature 0C the density values further down, This iscaused by the imbalance between the weight magnesium particles moistened (coal bottom ash) during theelectroless plating process. Based on the results of testing the value of the highest density achieved at a temperatureof 3000C to oxidation (wt%) 0.005 Mg is equal to 2.609 gr/cm3. And the value of the lowest density is achieved at atemperature of 200 0C to oxidation (wt%) Mg 0,010 is equal to 2.406 g / cmKeywords: composite, electroless plating, stir casting, density-porosity.
STUDI EKSPERIMENTAL PROSES HARDENABILITY BAJA AISI 4340 PADA TEMPERATUR 900 O C, 1100 O C, 1400 O C DITINJAU TERHADAP HASIL UJI JOMINY TEST JURUSAN TEKNIK MESIN UNIVERSITAS TUJUH BELAS AGUSTUS 1945 SURABAYA ., Ismail; Imanda, Herman
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

Experimental Study Process hardenability Steel Aisi 4340 At temperatures of 900 Oc, 1100 c SeenOn Test Results Jominy Test, this research aims to data requirements thesis Department of Mechanical EngineeringUniversity August 17, 1945 Surabaya, Hardenability is the ability of the steel to be hardened to form martensite.Hardenability describe it hardening (depth of hardening) obtained by hardening, usually expressed by a distance ofa point below the surface where the structure consists of 50% martensite (presumed that occurs when a martensitichardening as much as 50%). A steel is said to have a high hardenabiliti if it shows thick steel hardening (depth ofhardening) were large or may harden the entire cross-section of an object large enough. To measure hardenabilition AISI 4340 steel by Jominy way. Testing hardenabiliti manner called Jominy end quench hardenability testbecause the test specimen is used berbentu cylindrical trunk diameter of 1 "(25 mm) long 4" (100 mm) which iscooled at one end. For this test use tool with a hole where the specimen is at its peak. Just below the specimencontained a nozzle diameter of 1 "(12.5 mm) for spraying cooling water to the height emission-free 2.5" (65 mm).Among the specimens with a nozzle mounted plate barrier that can be opened quickly shortly after the specimen isplaced in the holder hole. From the results of this test to obtain violence on AISI 4340 steel is higher than thestrength before doing the testing process.The test rod is heated at tempratur austenisasi for 30-35 minutes. Furnace atmosphere should be kept neutral inorder to avoid the formation of slag and carburizing. After the testing process Jominy This test is continuedkesebuah Rockwell testing process and testing of microstructure (Metallography), to obtain a data for theobservation process.Keywords: Process hardenability Steel Aisi 4340 Against Jominy Test Results Test
KAJI EKSPERIMEN MODEL PATAHAN PADA AL 6061 – ABU DASAR BATU BARA YANG MENDAPAT PERLAKUAN PANAS Achmad, Zainun
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

Composite is a blend of two materials or that have a different phase becoming a new material, which has better properties than both. If fusion is occurring microscopic (molecular level) then referred to as alloy / blend.This study aims to analyze the surface of the fatigue test results using Macro photograph and SEM-EDX. In thisstudy was observed fracture fatigue test results. To determine the morphology of each treatment and no treatment.Conclusions testing fatigue fracture surface photograph can find out which models are tired of the results of afatigue fracture. The method is used, using the test results broken fatigue rotary bending fatigue fracture by taking alook at the best cycle. Then, after the material was broken in doing observations mikroskope photo to view themicrostructure and phase formed from each treatment and without heat treatment, after it is done using the STEMIDV4 macro image to see the surface of the account after break tired. And to see perpatan composition using SEMEDXInspect S50 to see the line and the composition of the material that gets the heat treatment and withoutsediment heat treatment.Keywords: Composites, fatigue fracture fatigue, Structure mikroskope, Photo Macro, SEM-EDX
ANALISA PENGARUH BENTUK LEKUKAN PIPA KAPILER DAN DIAMETER BERBEDA TERHADAP SUHU EVAPORATOR PADA REFRIGERATOR JENIS DISPENSER Martini, Ninik; Sabtadi, Catur Hari
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

Dispenser is an electronic device to drain the water of gallons of water into the cup or glass that can automatically heats and cools water that is ready to drink. Also called water cooler dispenser (water cooler), butalong with the development of technology and the increasing complexity of human needs, the dispenser is not onlyused to cool water, dispenser also can heat the water using a heater. On the dispenser there is a straight capillarytube where the capillary tube is one of the important components in the engine cooler (dispenser) and had aconsiderable influence on the size of the resulting temperature on the evaporator. This study used a variation incapillary tube spiral shape and forms a straight capillary tube with a diameter of 0.026 cm pipe; 0.028 cm; 0.031cm and a fixed length of 100 cm.The results were obtained in the form of a capillary tube straight with the lowest temperature evaporator isgenerated at 0,026 cm diameter pipe, with a temperature of - 10 0C and the resulting high temperature evaporatorin the form of straight capillary tube with a pipe diameter of 0.031 cm, with a temperature of 0 C. And achievementcoefficient (COP), which is the highest form of straight capillary tube with a diameter of 0.026 cm, with a value ofCOP = 13.896. and value is the lowest COP spiral shape of the capillary tube with a diameter of 0.028 cm, with avalue of COP = 10.761.Keyword : Capilary Tube ,Coefficient Of Performance (COP), Temperature of Evaporatio
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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Abstract

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.
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

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