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MEKANIKA – Jurnal Teknik Mesin Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya Jalan Semolowaru No. 45, Surabaya 60118 Telepon: (031) 5931800 Negara: Indonesia
Location
Kota surabaya,
Jawa timur
INDONESIA
MEKANIKA - JURNAL TEKNIK MESIN
Published by Universitas 17 Agustus 1945 Surabaya
ISSN : 24603384     EISSN : 26863693     DOI : belum tersedia
Core Subject : Science, Engineering,
Energy Engineering Mechanical Engineering
MEKANIKA – Jurnal Teknik Mesin adalah jurnal ilmiah yang diterbitkan oleh Fakultas Teknik, Universitas 17 Agustus 1945 Surabaya. Jurnal ini bertujuan untuk mewadahi hasil-hasil penelitian, studi eksperimen, kajian analitis, maupun pengembangan teknologi di bidang keteknikan, khususnya teknik mesin. Ruang lingkup jurnal meliputi termodinamika, perpindahan panas, sistem pendingin dan tata udara (HVAC), energi terbarukan, konversi energi, mekanika fluida, desain mesin, manufaktur, sistem kontrol mekanik, dan otomasi teknik.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 139 Documents
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PENGARUH KUAT ARUS LISTRIK, DAN KECEPATAN PENGELASAN SMAW TERHADAP KEKUATAN TARIK PELAT BAJA KOMERSIAL Sulistyono, Djoko; Rohim, Abdur
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

Lingkup penggunaan teknik pengelasan dalam konstruksi sangat luas meliputi perkapalan, jembatan, rangka baja,sarana transportasi, rel, pipa saluran dan lain sebagainya.  Kekuatan hasil lasan dipengaruhi oleh tegangan busur, besar arus, kecepatan pengelasan, besarnya penembusan dan polaritas listrik. Penentuan besarnya arus dalam penyambungan logam menggunakan las busur mempengaruhi efisiensi pekerjaan dan bahan las. Penentuan besar arus dalam pengelasan ini mengambil 100 A, 150 A dan 200 A. Pengambilannya dimaksudkan sebagai pembanding dengan interval arus diatas. Pada variasi arus 100 A, 150 A, 200 A untuk tebal 10 mm diperoleh arus terbaik yaitu 100 A,dan 150 A dengan tegangan luluh 4890 kg/mm2, tegangan maksimun 4950 kg/mm2, dan tegangan patah 4110 kg/mm2 dengan pembanding tanpa pengelasan dengan tegangan luluh 4298,3 kg/mm2, tegangan maksimun 4790  kg/mm2, dan tegangan patah 4219,85 kg/mm2. Pada variasi arus 100 A, 150 A, 200 A untuk tebal 11 mm diperoleh arus terbaik yaitu 100 A, dengan tegangan luluh 4890 kg/mm2, tegangan maksimun 4950 kg/mm2, dan tegangan patah 4260 dan pada arus 150 didapat tegangan  luluh 4859,4 kg/mm2, tegngan maksimum 4950 kg/mm2,tegangan patah 4376 kg/mm2, dengan pembanding tanpa pengelasan dengan tegangan luluh 4298,3 kg/mm2, tegangan maksimun 4790  kg/mm2, dan tegangan patah 4219,85 kg/mm2. Dan regangan terbaik untuk tebal 10 mm dengan arus 100 A adalah 20 %, dan tebal 11 mm dengan arus 100 A adalah 22 %. Dan regangan terbaik untuk tebal11mm dengan arus 150 A adalah  22%  Dimana dapat dilihat dari perbedaar arus 100 A dengan tebal 10 mm dan arus 100 A  dan 150 A dengan tebal 11 mm, mempengaruhi kuar arus dan tebal, maka senakin tebal plat yang akan dilas maka arus di gunakan harus lebih besar.Kata kunci: Uji Tarik, Arus, SMAW
PERANCANGAN PERANGKAT MONITORING KETINGGIAN AIR TANDON SKALA RUMAH BERBASIS SENSOR ULTRASONIK MELALUI INDIKATOR LAMPU, ALARM, DAN LCD Mastuki, Mastuki; Santoso, Santoso
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

Penelitian perancangan perangkat monitoring ketinggian air tendon rumah tangga berbasis sensor ultrasonik melalui indokator lampu, alarm, dan LCD telah mulai dilakukan. Penelitian ini bertujuan untuk merancang suatu sistem untuk mendeteksi atau memonitoring ketinggian air dalam tandon rumah tangga dengan sensor ultrasonik dan membuat suatu sistem untuk memberikan informasi atau peringgatan dini apabila air pada tandon sudah mulai habis dan sudah akan penuh. Komponen-komponen yang perlu disiapkan adalah mikrokontroler atmega 16, sensor ultrasonik, LCD, relay, buzzer, kabel USB dan jumper, lampu, dan beberapa elemen pendukung lainnya. Dari analisa hasil, disimpulkan bahwa alat detektor ketinggian air tandon bekerja dengan baik dan dapat dirancang dengan mikrokontroller ATMega 328 sebagai kontrolernya dan sensor ultrasonik sebagai detektor ketinggian air tandon serta lampu dan alarm sebagai indikator ketinggian. Alat detektor masih skala lab dan masih dapat dimodifikasi sesuai kebutuhan dan sebagai sistem otomasi dari pompa dengan menyelaraskan pada indikator lampu.Kata kunci: sensor ultrasonik, mikrokontroller, ketinggian air tendon.
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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Abstract

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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Abstract

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
STUDI EKSPERIMENTAL PROSES PIROLISIS LIMBAH SISA PRODUKSI SANDAL DITINJAU TERHADAP TEMPERATUR DAN WAKTU Agung S, Pramoda; Solichin, Mohammad
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

Pyrolysis is defined as the process of thermal degradation of the solid by heating process in conditions oflittle or no oxygen, or other reagents that allow some conversion paths thermokimia so that these solids into gas(permanent gasses), liquid (pyrolitic liquid) and solids (char)In this experiment we used slippers waste as raw material. LPG gas stove as a heater in a system retort.denganpirollisis temperature variations of 150 ° C, 300 ° C, 350 ° C and 400 ° C with a variation of pyrolysis time of 60min, 90 min and 120 min. With the aim to produce a yield of carbon in the form of charcoal.The experimental results showed that the waste can be processed into a carbon sandals charcoal by pyrolysis.Carbon yield of charcoal produced from this experiment between 36% to 48% with an average yield of 41.425% Keywords: pyrolysis, the waste slippers, carbon charcoal.
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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Abstract

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 35° 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 () = 1,3003 N.s/m2, the value of current capacity (Qout) is small happen in mud sucker pipe corner 60° = 0,000523 m/s.While smallest viscosity () = 1,1225N.s/m2, , the value of current capacity (Q) is big happen in mud sucker pipecorner 35° = 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 35° 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 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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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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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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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 VARIABEL PEMBUKAAN KATUP PENGATUR TEKANAN (REGULATOR VALVE) UDARA DAN DIAMETER SELANG PVC (PU TUBE) TERHADAP PERFORMA MESIN PEMOTONG KERTAS TYPE PNEUMATIK Priyo Utomo, Gatut; Adhitomo, Sayuti
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

Salah satu inovasi paling banyak dikembangkan dalam perindustrian adalah pneumatik. Pneumatik tersebut dapat digunakan dalam berbagai macam bentuk untuk aplikasi alat dan dapat dibuktikan banyak membantu pekerjaan. Tujuan serta manfaat dari penelitian ini adalah untuk menganalisa dan mengetahui mana performa terbaik dengan menggunakan  beberapa variabel pembukaan Katup Pengatur Tekanan (Regulator valve) udara dan diameter selang PVC (PU Tube) terhadap kinerja mesin pemotong kertas type pneumatik. Sehingga perhitungan yang sesuai sangat di butuhkan pada alat ini. Metode penelitian yang digunakan adalah mesin pemotong kertas type pneumatik yang sudah ada dengan variasi  pembukaan Katup Pengatur Tekanan (Regulator valve) udara 90°,180°,270° dan mengunakan variasi besarnya diameter selang 6mm, 8mm, 10mm. Dari hasil analisa dan perhitungan pada mesin pemotong kertas tipe pneumatik, disimpulkan bahwa dengan  menggunakan diameter selang 10 mm dan  pembukaan Katup Pengatur Tekanan (Regulator valve) udara 270° didapat performa yang maksimal. Yaitu penurunan tekanan (head losses) yang terjadi pada sistem pneumatik yang bekerja pada mesin pemotong kertas adalah ∆P = 2,2 x 10-6 Pa relatif lebih kecil dibandingkan menggunakan variabel diameter selang yang lain, sedangkan untuk gaya yang dihasilkan dapat mencapai F = 1948,4 N dan kecepatan aliran udara yang mengalir v = 0,0012 m/s.Kata kunci: Katup Pengatur Tekanan (Regulator valve) , selang PVC (PU Tube), sistem pneumatik.

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