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INDONESIA
JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY
Published by Universitas Medan Area
ISSN : 25496220     EISSN : 25496239     DOI : -
Core Subject : Science, Engineering,
Energy Industrial & Manufacturing Engineering Mechanical Engineering
This journal is a publication media of research results in the field of machinery that has been carried out by academics or practitioners by following predetermined rules. The research areas include: manufacturing, engineering materials, energy conversion and renewable energy, as well as other machinery fields, such as: mechatronics, hydraulics, plantation tools, and engine maintenance management systems. Each paper that has been sent will be reviewed by a team of experts in their field, and published online through the http://ojs.uma.ac.id/index.php/jmemme url address. This journal was founded in 2017 and has been registered with a print version of ISSN 2549-6220 and the online version of ISSN 2549-6239.
Arjuna Subject : -
Articles 211 Documents
 10   11   12   13   14 
Pengaruh Diameter Knee pada Headloss Aliran Berbasis Monogram, CAD dan CAE Nur Hayati; Adi Purwanto; Erwan Muladi
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 5, No 2 (2021): EDISI DESEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v5i2.5405

Abstract

Pipes are used as a means of fluid transportation from a reservoir to a destination. In a piping system, flow loss or head loss is always found, both head loss due to pipe size and head loss due to bends, one of which is the knee. The purpose of this study was to determine the effect of knee diameter on flow headloss. The method used is simulation and monogram calculation. Based on the standard ASME B16.9 B16.28 used knees with a diameter of 1, 2, 4 and inch. The experimental results show the same behavior between the simulation and the monogram calculation. The larger the knee diameter, the smaller the head loss. Headloss simulation results for knee diameters 1,2,4 and 6 inches are 0,012 m, 0,0093 m, 0,00063 m and 0,00426 m, respectively. Meanwhile, the headloss calculated by the monogram is 0.006 m, 0.0024 m, 0.0007 m and 0.004 m, respectively. The smallest headloss occurred at 4 inches in diameter indicating that the knee with this diameter is the best knee among the other four knees
Pengaruh Kecepatan Landing dan Pemilihan Material terhadap Faktor Keamanan Landing Skid Helikopter Tanpa Awak Menggunakan Ansys Workbench Lasinta Ari Nendra Wibawa
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 5, No 2 (2021): EDISI DESEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v5i2.5027

Abstract

Landing skids are an important component of uncrewed helicopters. The landing skid acts as a support when the helicopter lands or is parked. This paper examines the effect of landing speed and material selection on the safety factor of uncrewed helicopter landing skids using Ansys Workbench. The uncrewed helicopter weighs 100 kg and an impact time of 0.5 seconds. Landing speed variations are 2 m/s, 3 m/s, and 4 m/s. The materials used in the simulation are plastic types, namely ABS, HDPE, Polyamide (PA6), and Polycarbonate (PC). The simulation results show that the ABS and HDPE materials can only withstand impact loads up to a landing speed of 3 m/s because they have a safety factor of 3.57 and 3.69, respectively. Meanwhile, Polyamide (PA6) and Polycarbonate (PC) can withstand impact loads up to a landing speed of 4 m/s because they have a safety factor of 4.19 and 6.03, respectively
Kinerja Mesin Motor 4 Langkah dengan Bahan Bakar Campuran Bioetanol dan Pertamax Indra Hermawan; Muhammad Idris; Darianto Darianto; M. Yusuf R Siahaan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 5, No 2 (2021): EDISI DESEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v5i2.5787

Abstract

The availability of fossil fuels as an energy source is increasingly limited, so there is a need for new energy sources as environmentally friendly alternatives, one of which is bioethanol. Bioethanol is a type of biofuel sourced from living matter, usually plants with the chemical formula C2H5OH and the empirical formula C2H5O with an octane number of 108. One of the benefits of bioethanol for fuel mixtures is due to the higher octane value, flammability, heat of vaporization and higher oxygen content lowers cylinder temperature thereby reducing NOx emissions and producing less CO2. This study aims to evaluate the performance of a 4 stroke engine by comparing the use of Pertamax and bioethanol mixtures of fuel with a composition of 25%, 20%, and O% bioethanol. The study used an experimental method where data was collected and then data processing and data analysis were carried out. The results obtained the highest power of 8.70 kW at 25% bioethanol at 6000 rpm, followed by 20% bioethanol and 100% Pertamax at 8.60 rpm with rotations of 6500 rpm and 7000 rpm respectively. The highest torque of 25% bioethanol is 13.80 Nm at 5500 rpm, followed by 3.10 Nm at 5000 rpm at 100% pertamax and 12.80 Nm at 5500 rpm with 20% bioethanol fuel. The lowest fuel consumption is 0.57 kg/kWh at 7000 rpm with 100% pertamax fuel, then 0.60 kg/kWh with 20% bioethanol fuel at 6500 rpm and 0.6 kg/kWh with 15% bioethanol fuel at 6000 rpm
Pengaruh Unsur Fe dan Penambahan Grain Refiner Al-5TiB Terhadap Morfologi Fasa Intermetalik dan Sifat Mekanis Pada Paduan Zamak 3 Surya Irawan; Khairuddin Tampubolon
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 5, No 2 (2021): EDISI DESEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v5i2.4629

Abstract

In general, in the hot chamber diecasting industry the use of scrap gating and machining has never been optimally used for recycling so that it can become raw material. This is due to the presence of iron impurities (Fe) forming an intermetallic phase which is dissolved into the Zn-Al alloy which can be seen in its microstructure. So that problems arise that will result in defects in the castings and reduce the mechanical properties of the castings. This study aims to determine the effect of adding Al-5TiB modifier as a grain refiner in changing the morphology of the intermetallic phase of the alloy. This research was conducted at the Department of Metallurgy and Materials, FTUI, Depok and the objects were Zinc-Aluminum Zamak 3 and several other supporting metals. This study uses an experimental method. The results of the investigation show that the effect of impurities through the addition of iron (Fe) 0.04% and 0.19% can lead to an increase in the intermetallic phase fraction at the grain boundaries which causes a decrease in tensile strength, impact, and fluidity in Zinc - Aluminum alloys. The addition of 0.5% and 1% Al-5TiB grain refiner to the Zamak 3 master alloy with 0.19% iron (Fe) content resulted in an increase in the mechanical properties and fluidity values of the alloy. This is due to the formation of an intermetallic phase which is more uniformly distributed over the finer grain boundaries.
Studi Numerik Centrifugal Fan Tipe Impeller Backward dengan Variasi Putaran Fan Lohdy Diana; Achmad Setiyawan; Achmad Bahrul Ulum; Arrad Ghani Safitra; Muhammad Nabiel Ariansyah
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 5, No 2 (2021): EDISI DESEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v5i2.5181

Abstract

The primary air fan functions as a primary air producer which is used as air to transport coal powder from the pulverizer to the burner to be burned in the boiler furnace. This study aims to obtain the effect of the rotation variation of fan to  fluid flow characteristics such as the distribution of total pressure, the dynamic pressure, the pressure static contours, velocity distribution, and the fan optimal efficiency. This study was numerical study with simulated a backward impeller type centrifugal fan in a two-dimension model using Fluid Computational software with the multiple reference frame method with the variation of fan rotation. Based on the visualization of the pressure contour and velocity distribution, it could be concluded that there was a volute phenomenon, this was indicated that the greater the volume area in the volute is the greater the total pressure value too. Based on the visualization of the outlet velocity distribution at the position of -0,8531m to -1,01301m, it was found that the velocity is close to the value of 0 m/s2. It showed that the minimum velocity in the area due to the volute tongue radius occurs a flow collision and it impacted the velocity in the area decreased up to V=0. From the simulation results, it was found that the greater the fan rotation value was the greater the efficiency value too. It would be verified by the actual operating data of the centrifugal fan with a minimum rotation range value of 1194 rpm to a maximum of 1468 rpm
Pengaruh Temperatur Artificial Age Terhadap Kekerasan, Kekuatan Luluh dan Kerapatan Dislokasi Pada Paduan Al97,11Mg1,52Si0,86Zn0,51 Budiarto Djono Siswanto
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 5, No 2 (2021): EDISI DESEMBER
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v5i2.4630

Abstract

The dislocation density, micro lattice strain, crystal size, microstructure and hardness of T6 heating treatment have been carried out with variations in temperature of artificial age in Al97,11Mg1,52Si0,86Zn0,51 alloys. The Al97,11Mg1,52Si0,86Zn0,51 alloy sample was made with granular metallurgy and then T6 was heated (solid solution heating at 530 0C for 1 hour and temperature variations of artificial age 1400C, 1700C, and 2000C and time for 1 hour). The hardness test results showed that the Al97,11Mg1,52Si0,86Zn0,51alloy increased due to variations in artificial age temperatures. Microstructure observation shows hypoeutectic structure consisting of primary aluminum dendrite and eutectic mixture of Al97,11Mg1,52Si0,86Zn0,51. The results of the analysis of dislocation density, microstructure, and crystal size after T6 heat treatment showed that the Al97,11Mg1,52Si0,86Zn0,51 alloy. consists of the -Al phase, and the Mg2Si phase. The results of artificial age resulted in recrystallization and grain growth as evidenced by an increase in micro-strain from 25.05% to 32.83% in the Miller index (311), an increase in crystallite size from 7.6734 nm to 21.3354 nm, and a decrease in dislocation density. from 0.0624 1/mm2 to 0.0067 1/mm2 and a decrease in yield strength from 573.54 MPa to 312.65 MPa.
Peningkatan Kualitas Water Pump Engine Type SAA6D170E-5 Dengan Perbaikan Proses Assembly Water Pump Wilarso Arso; Bayu Idiyanto; Firmansyah Azharul
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 6, No 1 (2022): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i1.6763

Abstract

Water pump adalah pompa sentrifugal yang tugasnya mensirkulasikan air ke dalam sistem pendingin pada engine.Dari data problem komponen di tahun 2020 pada Workshop Plant Rebuild Center PT X,sering terjadi kebocoran seal air pada water pump engine type SAA6D170E-5 sebanyak tujuh kali. Oleh karena itu,tujuan penelitian ini adalah untuk mencari penyebab terjadinya kebocoran pada seal air di water pump untuk dilakukan perbaikan agar tidak terjadi kerusakan lagi pada komponen water pump. Dengan menggunakan metode alir,dapat menganalisis kerusakan water pump. Dari hasil analisis tersebut untuk mendapatkan beberapa temuan penyebab sering terjadinya kebocoran pada water seal yaitu adanya partikel debu yang masuk ke permukaan water seal,pemasangan bearing shaft yang belum standar,dan metode pemasangan water seal yang salah. Setelah itu dilakukan perbaikan proses assembly,dari penambahan hose transparan di lubang indikator,mengganti alat pemasangan bearing dan mengganti pelumas water seal dari oil ke sabun.Setelah dilakukan perbaikan,dapat di evaluasi kualitas dari komponen water pump dari data problem engine type SAA6D170E-5 di bulan mei sampai bulan September tahun 2021 bahwa komponen water pump tidak terjadi kerusakan.Sehingga dengan perbaikan proses assembly komponen water pump pada engine type SAA6D170E-5 dan di tuangkan pada prosedur INK (Intruksi Kerja) yang sesuai dengan shopmanual yang terbaru menjadikan hasil kinerja dari komponen water pump menjadi baik dan berkualitas sangat tinggi
Review Potensi Pemanfaatan Biogas dari Limbah Cair Pabrik Kelapa Sawit PTPN 5 Suksmo Satriyo Pangarso
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 6, No 1 (2022): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i1.6298

Abstract

Indonesian Sustainable Palm Oil (ISPO) merupakan kebijakan Pemerintah Republik Indonesia untuk meningkatan daya saing produksi sawit Indonesia serta berkontribusi dalam mengurangi gas rumah kaca serta memberikan perhatian terhadap lingkungan hidup. PT Perkebunan Nusantara (PTPN) 5 berusaha untuk meningkatkan pemanfaatan limbah Pabrik Kelapa Sawit (PKS) diolah menjadi sumber energi lainnya. Salah satu limbah yang menjadi fokus untuk ditingkatkan pemanfaatannya adalah limbah cair atau yang dikenal dengan Palm Oil Mill Effluent (POME). Pemanfaatan POME menjadi biogas adalah sebuah alternatif yang banyak dilakukan. Biogas tersebut selanjutnya bisa digunakan sebagai pengganti bahan bakar cangkang kelapa sawit pada boiler PKS (biogas cofiring) dan compressed biogas (CBG).
Analisis Kekuatan Mekanik Material Komposit yang Berpeluang Diaplikasikan pada Handle Rem Sepeda Motor Felyx Berkat Sihombing; Muhammad Yusuf Rahmansyah Siahaan; Rakhmad Arief Siregar
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 6, No 1 (2022): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i1.6209

Abstract

Dalam penelitian ini dipaparkan tentang karakteristik kekuatan tarik komposit serat serabut kelapa dengan variasi resin, katalis untuk mengamati perubahan kekuatan tarik titik luluh, modulus elastisitas dan regangan patah. Dengan memanfaatkan bahan sisa dari sebuah kelapa, spesimen dicetak sesuai dengan standar. Hasil pengujian tarik menunjukkan nilai tegangan tarik rata-rata tertinggi terdapat pada spesimen 5 % katalis 95 % resin dengan nilai 27,24 MPa, untuk kekuatan luluh rata-rata teringgi terdapat pada spesimen 5 % katalis 95 resin dengan nilai 9,73 MPa, untuk modulus elastisitas rata-rata tertinggi terdapat pada spesimen 5 % katalis 95 % resin dengan nilai 7,77 MPa, dan yang terakhir untuk regangan patah rata-rata tertinggi terdapat pada spesimen 15 % katalis 85 % resin dengan nilai  11,50 MPa.
Analisis Kerusakan Pneumatic Caterpillar Untuk Meningkatkan Availability Performance Mesin Extruder Tipe 150 Hilman Sholih; Jaelani Syurdiansyah; Asep Saepudin; Wilarso Arso
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol 6, No 1 (2022): EDISI JUNI
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i1.6770

Abstract

Proses finishing dari tahapan pembuatan kabel yang paling kritis adalah proses Isolasi (proses pelapisan konduktor). Proses ini merupakan proses pelapisan konduktor dengan material berbahan Polyvinyl Chloride (PVC) atau Cross Linked Polyethylene (XLPE) menggunakan mesin Extruder tipe 150. Dari data observasi yang dilakukan menunjukan bahwa Mean Time Between Failure (MTBF) mencapai 3458 menit dan Mean Time To Repair (MTTR) mencapai  menit. Sedangkan Availability Performance (AP) Hanya mencapai 95,1% Hal ini membuat kinerja mesin Extruder tipe 150 tidak bisa bekerja dengan maksimal dan menyebabakan proses produksi menjadi terganggu. Permasalahan yang sering terjadi adalah terjadi kebocoran pada komponen Pneumatic. Tujuan dari analisis ini adalah untuk meningkatkan Availability pada komponen Pneumatic agar kerusakan yang sering terjadi dapat diminimalisir. Metode yang dilakukan adalah dengan perbaikan pada kompoenen Pneumatic yang rusak dan yang paling terpenting perawatan yang standar. Lalu dengan pemasangan Filter Legulator Lubricator (FRL) sebagai upaya untuk menanggulangi debit air yang masuk pada sistem Pneumatic. Setelah dilakukan analisis dan perbaikan pada permasalahan yang terjadi, Availability Performance (AP) pada mesin Extruder tipe 150 menjadi 99,00%, Mean Time Between Failures (MTBF) 9400 menit, dan menurunkan Mean Time To Repair (MTTR) 90 menit

Page 12 of 22 | Total Record : 211

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