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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
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Search results for , issue "Vol 13 No 1 (2018): Jurnal Teknik Mesin Indonesia" : 8 Documents clear
Pengaruh pack carburizing media arang tempurung kelapa terhadap ketahanan aus baja komersial dengan variasi pelumas.pdf Wahyu Richard Nugraha; Muhammad Iqbal; Sri Chandrabakty
Jurnal Teknik Mesin Indonesia Vol 13 No 1 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (494.211 KB) | DOI: 10.36289/jtmi.v13i1.86

Abstract

Penelitian ini dilakukan untuk mengetahui pengaruh pack carburizing media arang tempurung terhadap ketahanan aus baja komersial dengan variasi pelumas. Media karbon yang digunakan yaitu arang tempurung kelapa. Proses pack carburizing dilakukan pada temperatur 950oC dengan quenching media air dan tempering dengan suhu 200oC, setelah proses pack carburizing kemudian dilakukan pengujian keausan dengan variasi pelumas SAE 40, SAE 90, SAE 140 dan juga tanpa pelumas (TP). Laju keausan pada spesimen yang mengalami proses pack carburizing untuk pengujian SAE 40 dan SAE 90 sebesar 0,08% dengan faktor keausan sebesar 0,00193 mm3/N.km dan 0,00202 mm3/N.km, kemudian untuk pengujian SAE 140 laju keausan sebesar 0,05% dan faktor keausan sebesar 0,00128 mm3/N.km, serta untuk pengujian tanpa pelumas (TP) sebesar 0,31% dan faktor keausan sebesar 0,00807 mm3/N.km. Sedangkan pengujian raw material pada pengujian SAE 40 laju keausan dan faktor keausan sebesar 0,19% dan 0,00504 mm3/N.km, untuk hasil pengujian SAE 90 sebesar 0,21% dan 0,00541 mm3/N.km, serta hasil laju keausan pengujian SAE 140 sebesar 0,0,18% dengan faktor keausan sebesar 0,00459 mm3/N.km kemudian pengujian tanpa pelumas (TP) sebesar 3,59% dengan faktor keausan sebesar 0,09537 mm3/N.km
Studi simulasi penggunaan airfoil naca 6412 sebagai sudu pada turbin angin crossflow melalui pemodelan CFD 2 dimensi Muhammad Ivan Fadhil Hendrawan; Dominicus Danardono; Syamsul Hadi
Jurnal Teknik Mesin Indonesia Vol 13 No 1 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (938.411 KB) | DOI: 10.36289/jtmi.v13i1.87

Abstract

AbstrakSimulasi ini bertujuan untuk mengetahui pengaruh sudut sudu dan jumlah sudu turbin angin sumbu vertikal cross flow runner terhadap peningkatan kinerja turbin angin. Turbin memiliki jumlah sudau 20, 22, dan 24. Simulasi dilakukan dalam analisis 2D menggunakan ANSYS-Fluent. Tip Speed Rasio bervariasi pada kisaran 0,1-0,5 dengan kecepatan konstan inlet 2 m/s. Efek dari jumlah sudu terhadap torsi dan koefisien daya dianalisis dan dibandingkan. Telah dihasilkan bahwa koefisien daya terbaik adalah 0,5 pada Tip Speed Rasio 0,3.
Efek penggunaan serbuk karbon aktif sebagai pelumas dalam proses kompaksi Tengku Jukdin Saktisahdan; Muhammad Mujibur Rahman
Jurnal Teknik Mesin Indonesia Vol 13 No 1 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (766.994 KB) | DOI: 10.36289/jtmi.v13i1.82

Abstract

One of the advantages of powder compaction to other manufacturing process is the improved quality with maintained tolerances and reduced processing cost. However, during the compaction phase, significant friction force usually generated which gives adverse effect to the quality of final products. Polymeric lubricant is usually used to reduce friction, both inter-particle and between powder mass and the die surface. However, due to its lower melting temperature, during sintering process, portion of the lubricant at the surface is burnt out and trapped lubricant inside the compact expands leaving pores which lowers down the strength of the sintered products. In order to overcome this problem, fine activated carbon varying from 0.1%, 0.3% and 0.5% was used as admixed lubricant. The feedstock was prepared by mechanically mixing iron ASC 100.29 powder with designated carbon powder for 30 minutes. Powder mass was compacted at 30°C and 150 °C by applying simultaneous downward and upward load of 130 kN. The defect-free green compacts were heated at argon gas fired sintering furnace at different sintering schedule i.e, 800°C, 900°C and 100°C. The sintered products were tested mechanically and their microstructures were evaluated. The results revealed that the properties of sintered products were affected by carbon content, forming temperature, and sintering schedules.
Rancang-bangun prototipe mesin CNC laser engraving dua sumbu menggunakan diode laser M Munadi; Aulia Syukri; Joga Dharma Setiawan; Mochammad Ariyanto
Jurnal Teknik Mesin Indonesia Vol 13 No 1 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (819.639 KB) | DOI: 10.36289/jtmi.v13i1.88

Abstract

The development of industrial technology can help the manufacturing industry for producing quality products. One tool that can help produce such quality products is CNC machines. As we know that the price of CNC machines is not cheap. Therefore, in this article, the researchers suggest how to design a prototype CNC laser engraving machine for the acrylic workpiece. The machine is designed as cheaply as possible but provide great benefits. The machine frame is designed using aluminum extrusion, the laser uses a laser diode type, the actuators of axis uses the stepper motor, and the control software uses a USB CNC controller. The dimension of workpiece that can be machined is 600 mm x 300 mm x 2 mm. The optimization of the stepper motor movement system is chosen 1/8 micro stepping after testing full-step method, half-step, 1/8 micro stepping, and 1/16 micro stepping. Using a 2.5 watt diode laser module, the radiant heat received by the acrylic workpiece during the engraving process is 558.8 x 10-5 cal/sec.
Analisis sifat kuat tarik dan tekan kayu malapoga yang di rendam dengan air kondensasi Faisal Sukardi; Awal Syahrani; Anjar Asmara
Jurnal Teknik Mesin Indonesia Vol 13 No 1 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (297.611 KB) | DOI: 10.36289/jtmi.v13i1.83

Abstract

Malapoga wood is one of the endemic wood that grows in tropical regions like in Central Sulawesi Province. The purpose of this research is to find out tensile strength and press malapoga wood which is soaked with condensation water. The result of tensile strength test and the compressive strength of malapoga wood with the variation of immersion happened the increase of tensile strength and compressive strength along with the duration of immersion. The longer the immersion time the value of tensile strength and compressive strength increases. The highest value of tensile strength and compressive strength is on soaking for 10 weeks with a tensile strength value of 59,520 MPa and its compressive strength is 29,775 MPa. While the value of tensile strength and the lowest pressure is on the specimen without immersion (raw material) with a tensile strength of 56.040 MPa and a compressive strength of 24.985MPa. Increased tensile strength of 5.84% and an increase in compressive strength of 16.08% of raw material.
Pengembangan prototipe mesin pencacah rumput laut yang telah melalui proses alkalisasi (ATC) M Marsono; S Septian
Jurnal Teknik Mesin Indonesia Vol 13 No 1 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v13i1.90

Abstract

Carrageenan which is needs in food processing industry, either in Indonesia or in the world continues to increase due to the growth of the world population. One of the variants of carrageenan recognized world is SRC (Semi Refined Carrageenan) with standard E407A. SRC can be produced from ATC (Alkali Treated Cottonii). To produce SRC flour, dried ATC must be chopped first and then proceed with the grinding process. Field studies that have been done give a picture that the seaweed chopping machine that available on the market has not effective and efficient to chopp dry ATC. In this research, the prototype of ATC Chopping machine was developed with slicing mechanism through the pairs of rotating blade and fixed blade. From testing that has been perfomed, the results shows that slicer mechanism capable to chopp dry ATC with variation of length between 1cm to 3 cm and minimum production capacity of 180 kg/h.
Pengaruh campuran biodiesel minyak rumput laut gracilaria verrucosa dengan bahan bakar solar terhadap unjuk kerja dan emisi gas buang mesin diesel Moch. Taufiq Ichsan; Samsudin Anis; Dwi Widjanarko
Jurnal Teknik Mesin Indonesia Vol 13 No 1 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.226 KB) | DOI: 10.36289/jtmi.v13i1.84

Abstract

Tujuan penelitian ini adalah untuk mengetahui pengaruh campuran biodiesel minyak rumput laut gracilaria verrucosapada bahan bakar solar terhadap unjuk kerja dan emisi gas buang mesin diesel.Produksi biodiesel minyak rumput laut menggunakan metode transesterifikasi. Variasi campuran biodiesel yang digunakan pada bahan bakar solar yaitu sebesar B-0, B-5, B-10, dan B-15 dan putaran mesin (rpm) yang digunakan pada 1600, 1800, 2000, 2300 dan 2500. Pengujian unjuk kerja mesin diesel menggunakan eddy current dynamometer. Hasil penelitian menunjukkan bahwa campuran biodiesel B-10 menghasilkan unjuk kerja dan emisi gas buang mesin diesel yang optimal dibanding campuran lainnya.
Analisis aliran fluida dan insulasi aliran pipa bawah laut menggunakan pipesim Rivandy Fathur Rachman; Rosyida Permatasari
Jurnal Teknik Mesin Indonesia Vol 13 No 1 (2018): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1002.798 KB) | DOI: 10.36289/jtmi.v13i1.85

Abstract

Black oil production that flows from the reservoir is always affected by water saturation and is a common problem that mainly occurs in the subsea pipeline that can form hydrate compounds. The formation of hydrate compounds in the subsea pipeline is a common problem due to significant temperature drop and thermodynamic changes during production. The problem should be effectively prevented to ensure normal pipeline operation. The purpose of this study is to find out how to reduce the formation of such compounds which can inhibit the transport process in the subsea pipeline through the use of various kinds of insulation material. The types of insulation materials tested are Polyethylene Low-Density (LDPE), Polyurethane (PU), Polypropelene (PP), Polystyrene (PS) and Polytetraflouroethylene filled with Glass (PTFE 25% GF). The fluid flow heat transfer equation in stable condition and mean heat loss is used in PIPESIM software model to analyze the selection of the insulation material required in the prevention of the formation of such compounds occurring within the subsea pipeline. The results stated that the best material of the five insulation materials used is Polystyrene (PS), whereas the worst material is Polytetraflouroethylene filled with Glass (PTFE 25% GF).

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