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INDONESIA
Jurnal Teknik Mesin Indonesia
Published by Badan Kerja Sama Teknik Mesin
ISSN : 1907350X     EISSN : 25977563     DOI : -
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknik Mesin Indonesia “JTMI” " adalah jurnal ilmiah sains dan teknologi yang diterbitkan oleh Badan Kerjasama Teknik Mesin Indonesia. JTMI meliputi bidang konversi energi, material, desain mekanikal, manufaktur dan otomasi
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 8 Documents
 1 
Search results for , issue "Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia" : 8 Documents clear
Analisa pemakaian energi listrik dan cop pada AC split 900 watt menggunakan refrigeran hidrokarbon MC-22 dan R-22 Harsono .; Bambang Santosa
Jurnal Teknik Mesin Indonesia Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (537.097 KB) | DOI: 10.36289/jtmi.v12i1.67

Abstract

To know the efficiency of work one AC equipment needs to know electricenergy consumption , the effect of performance and those obtained fromrefrigeration and ( cop ) .Most air conditioning system synthetic / ac wearinga refrigerant .The use of synthetic a refrigerant were forbidden to thegovernment of the republic of indonesia no. 1 according to the decisionmenperindag 79/mpp /kep/12 /2002 because they include ozone as depletingsubstance ( ods ) , That is a substance that can result in damage to the ozonelayer , in addition to the still have the potential as the substance which cancause the effects of global warming because it has global warming potentialgwp ( ) that is significant .On this thesis a refrigerant kept on a constantreview the use of environmentally friendly , namely a refrigerant musicoolhydrocarbon / 22 r-22 mc-22 as a substitute for .A refrigerant mc-22compatible with air conditioner use r-22 components .From the research acsplit by using r-22 , electric power usage 726 watts , the effect ofrefrigeration 149.07 kj / kg and cop 4.9 .Then maybe you an use mc-22 653wat electricity power usage.
Analisa keausan pahat pada pemesinan bor magnesium AZ31 menggunakan metode taguchi Gusri Akhyar Ibrahim; Joni Iskandar; Arinal Hamni; Sri Maria Puji Lestari
Jurnal Teknik Mesin Indonesia Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (583.68 KB) | DOI: 10.36289/jtmi.v12i1.69

Abstract

hisel rotating on a workpiece. During the machinery process happenedinteraction between the eye drill with a workpiece where work truncatedwhile a jackhammer experienced friction. Friction experienced a chiselcoming from the surface upset that flows and the surface of a workpiece thathas been lopped off, due to friction this chisel had worn out. The purpose ofthis research will analyzes age use a chisel hss in pemesinan drill magnesiumaz31 and to support the survey used method of taguchi to analyze pembahsanthe results of the study. Machinery parameter a drill that is used namely ajackhammer hss ( hight speed steel with size ( 10 mm, 12 mm, and 14 mm ),the pace lap ( 635 rpm, 970 rpm, 1420 rpm ) and used motion a meal ( 0.10mm / rev, 0.18 mm / rev and 0.24 mm / rev ), with a depth cut 50 mm. thedata wear a chisel carried out using a microscope digital usb with event 50x.Data wear chisel seen every time one drilling process and machinery processwill be stopped if a drill bit has made out. The results showed that chiselhighest age profits to drill diameter 10 mm and the pace lap 635 rpm anduse motion eat 0,10 mm / rev which was during 12,74 minutes, while agechisel lowest diameter drill obtained at 14 mm and the pace lap 1420 rpmand use of motion eat 0,18 mm / rev which was during 0,68 minutes.Basedon analisys of variant ( anova ) that parameter most significant inmempengaruh age wearing a drill bit is the pace lap ( n ). The greater thepace lap ( n ) and wear a drill bit will be more quickly, this is because hightemperatures in the result of friction between screw eyes and workpiece.
Pengaruh jenis proses pemotongan pada mesin milling terhadap getaran dan kekasaran permukaan dengan material aluminium 6061 Okky Nugra Retyawan; Indri Yaningsih; Heru Sukanto
Jurnal Teknik Mesin Indonesia Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (404.21 KB) | DOI: 10.36289/jtmi.v12i1.63

Abstract

This research was aims to determine the effect of the cutting process type on a milling machine to vibration and surface roughness of the aluminum 6061. The specimens were made using a cutting process type face milling, profile milling, pocket milling, slot milling and drilling. Surface roughness data retrieval is done on any type of cutting process using a surface roughness tester and vibration data was taken during a cutting process on any cutting process type using a vibration meter. The results showed the value of surface roughness and vibration in face milling of 0,5368 μm and 1,03 m/s², profile milling of 1,0984 μm and 1,49 m/s², pocket milling of 1,1004 μm and 1,73 m/s², slot milling of 1,4888 μm and 2,44 m/s² and drilling of 1,9944 μm and 18,62 m/s². Cutting process type on a milling machine having an influence on the vibrations and surface roughness. Each cutting process type has a different cutting force. The greater the cutting force that occurs in every cutting process type, the greater the value of the vibration and the surface roughness happened.
Studi eksperimental pemantauan kondisi dan penilaian analisa kinematik pengereman mobil Muhammad Sabri; Ardhian Fauza
Jurnal Teknik Mesin Indonesia Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (988.321 KB) | DOI: 10.36289/jtmi.v12i1.70

Abstract

Braking is an activity that aims to stop, handle and control the vehicle through the wheels. This study conducted experimentaly on four-wheeled vehicle brakes. The purpose is to find the relationship between the main parameters of the force, distance and time on the braking process. The results showed that the force parameters were inversely proportional to the distance and braking time. It will be an indicator of the brake performance to control vehicle base on road condition.
Pengaruh bahan kampas rem terhadap respon getaran pada sistem rem cakram Muhammad Mushlih Elhafid; Didik Djoko Susilo; Purwadi Joko Widodo
Jurnal Teknik Mesin Indonesia Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (659.092 KB) | DOI: 10.36289/jtmi.v12i1.28

Abstract

This study aims to determine the effect of brake pads material to the vibration response of disc brake system on many variety of braking conditions. The variations of brake pads material on this research such as metallic, non-asbes and ceramic. The variations of braking operation such as speed of disc rotation and braking pressure. Each brake pads material tested by variation of disc rotation 425, 637, 850, 1062 rpm and pressure variation 0,5 bar, 1 bar, 1,5 bar. Furthermore, the dynamic characteristics of brake pad had been tested by using the method of Modal Analysis Experiment. The results showed that the type of brake pad materials, disc rotation and braking pressure affect to vibration response of disc brake system. Increasing speed of disc rotation and braking pressure will increase the excitation force causing value amplitude of vibration in the braking system increases. Usage of brake pad ceramic also showed the lowest amplitude of vibration for all variations of disc rotation and braking pressure. Because the ceramic brake pad have the lowest natural frequency, then the value of the damping ratio is high, so that decreasing amplitude of vibration that occurs in the braking system.
Penentuan posisi retak pada balok dengan tumpuan bebas-bebas melalui analisis kurva modus getar Ferdian Kusuma; Meifal Rusli; Lovely Son; Mulyadi Bur
Jurnal Teknik Mesin Indonesia Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (894.403 KB) | DOI: 10.36289/jtmi.v12i1.71

Abstract

Crack is a problem that frequently found in a structure. Identification of crack is a crucial aspect in decision making about structure condition. Structural Health monitoring has become a solution to detect the crack. Basically, if a crack initiates and propagates in a structure, the natural frequencies of the structure will change because of decreasing stiffness and abrupt curvature of mode shapes will occur. This research is developed from before research and aimed to identify the crack position in a free free cantilever beam experimentally by analytically using finite element model (FEM) and experimental modal analysis (EMA). First, a perfect cantilever beam without any cracks is modeled by FEM and identified by EMA. Then artificial cracks are created to the beam with single and two cracks, and FEA model and EMA identification is developed. The position of the crack then is identified by the change of mode shape curvature using curvature change index that obtained from the difference in mode shape curvature between the damage and the undamaged cases, and mode shape curvature based on curvature sensitifity caused by decreasing stiffness caused by cracks.The result shows that mode shape curvature has better sensitifty to detect the position of cracks, and results of experiment show good corelation with results of finite element analysis.
Simulasi drag-type turbine ditinjau dari pengaruh variasi sudut kelengkungan sudu untuk diaplikasikan dalam pipa air Muh. Alwan Rosyidi; Syamsul Hadi; Dominicus Danar Dono Dwi Prija Tjahyana
Jurnal Teknik Mesin Indonesia Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (848.937 KB) | DOI: 10.36289/jtmi.v12i1.65

Abstract

The high rainfall and the high-rise building in urban areas are important potential factor in developing the alternative energy. A concept of Horizontal Axis Water Turbine is proposed as a media to generate the electrical energy with low head condition. This research focuses on the effect of various blade curvature angle on Drag-type Turbine with simulation method. The purpose of this research is to find the maximum performance from a various blade curvature angle of 100°, 110°, 120°, 130°, 140°, and 150°. The result is the maximum performance obtain at blade curvature angle 150° with torque value 16,8 Joule.
Produksi bioetanol melalui sistem distilasi nira dari pohon nipah dengan pemanfaatan energi panas kolektor surya Azwar Hayat; Mulyadi .; A. Erwin Eka Putra; Novriany Amaliyah; Muhammad Noor Umar
Jurnal Teknik Mesin Indonesia Vol 12 No 1 (2017): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (665.217 KB) | DOI: 10.36289/jtmi.v12i1.66

Abstract

Proses distilasi Nira dari pohon nipah sebagai sumber utama bioetanol telah dilakukan dengan menggunakan kolektor surya. Pada penelitian ini, nira yang tanpa memalui proses fermentasi dialirkan di bagian bawah modul kolektor surya untuk menyerap panas secara langsung dari kolektor. Tipe kolektor yang digunakan pada penelitian ini adalah tipe plat datar dengan kaca penutup tunggal. Nira dialirkan didalam pipa tembaga dengan plat aluminium yang telah dihitamkan sebagai plat penyerap panas (absorber). Uji kandungan nira nipah sebelum destilasi menunjukkan kandungan alkohol sekitar 5%, glukosa 0,04%, sukrosa 0,32, abu 0,48% dan sisinya adalah air. Setelah proses destilasi terlihat penurunan alkohol sekitar 1%. Perpindahan panas dari yang terjadi berupa konveksi dan radiasi dari udara luar ke kaca penutup, dari penutup ke udara didalam kolektor, perpindahan panas radiasi dan konveksi dari penutup ke plat absorber telah diperhitungkan. Panas yang berguna untuk proses distilasi dinyatakan sebagai efisiensi aktual sebesar 42,24%, sedangkan untuk efisiensi teoritis sebesar 44,25

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