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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
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Rancang Bangun Alat Pemanggang Makanan Berbahan Bakar Gas Elpiji Portabel Aji Setiawan; Wilarso Wilarso Arso; Asep Saepudin; Asep Dharmanto; Hilman Sholih; Aswin Domodite
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 2 (2023): Edisi Desember 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i2.9283

Abstract

Menu makanan bakar atau dipanggang banyak diminati di masyarakat dengan menu makanan bakar seperti ayam bakar, ikan bakar, daging panggang, bebek bakar, jagung bakar dan lain sebagainya. Akan tetapi setelah kami amati sering kali ditemukan panggangan dengan kualitas yang kurang baik, lebih cepat rusak serta rentan keropos atau berkarat dikarenakan bahan material yang kurang baik, serta rancangan dari produk panggangan yang sudah ada kurang fleksibel untuk dapat dibersihkan secara mudah dan cepat. Tujuan dalam penelitian merancang alat pemanggan menggunakan bahan material Plat Besi, dan ada bagian part atau komponen yang menggunakan bahan material Stainless Steel yang tidak mudah keropos atau berkarat serta tidak mudah rusak. Serta dilengkapi Mesin Pemantik untuk suplai bahan bakar gas untuk mempermudah dalam hal pengoperasiannya. Alat ini dibuat dengan tujuan untuk memberikan Tambahan Inovasi dengan mendesain serta merancang dan membuat alat panggangan bakaran dengan kualitas bahan material yang lebih baik dengan ukuran yang fleksibel. Dalam rancang bangun alat pemanggang berbahan bakar gas ini, diharapkan agar dapat menjadi salah satu pilihan atau solusi produk panggangan nantinya bagi masyarakat atau pengguna alat tersebut untuk digunakan dalam memanggang
Perancangan Turbin Angin Vertikal Modifikasi Darrieus Menggunakan Geometri Airfoil Naca 2414 Medyawanti Pane; Andreas; Rahmad Samosir
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 2 (2023): Edisi Desember 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i2.9456

Abstract

The National Energy General Plan policy is one of the government's focuses on controlling the use of renewable energy in line with the development of the need for energy use for the community, especially in the electricity sector. Electrical energy is energy that is very important for human needs, where every human being is very dependent on electricity for their daily needs. Currently, there is a crisis of fossil resources, so renewable energy can be developed. One renewable energy that is easy to develop is a wind turbine by utilizing the energy of the wind that blows. Indonesia has started to pay attention to increasing the efficiency of electricity generation, especially wind power. The type of turbine planned is the Darrieus type vertical axis wind turbine (VAWT) using a modified NACA Airfoil 2414 geometry with variations in wind speed. At a speed of 7,61 m/s from the test results obtained the power produced by the turbine is 20,78 watts with a voltage of 11,61 Volts and an electric current of 1,79 Amperes and at 354 rpm generator rotation. from the results obtained, the higher the wind speed, the higher the rotation produced by the turbine.
Pengaruh Waktu Tempering Terhadap Struktur Kristal, Kekerasan, dan Kuat Tarik Pada Baja VCN 150 Hanrevo Fauzi Haris; Budiarto; Andreas Reky Kurnia Widhi; Yulius Nanang Sutrisno
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 2 (2023): Edisi Desember 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i2.9472

Abstract

Baja VCN 150 termasuk dalam kategori baja ultra high-strength yang memiliki kekuatan sangat tinggi dan memadukan antara hardenability yang baik, keuletan, ketangguhan, dan ketahanan terhadap fatigue dan creep yang tinggi. Penulisan ini memaparkan pengaruh waktu tempering mengenai struktur kristal, kekerasan, serta kuat tarik pada baja vcn 150. Penelitian memakai metode penelitian kuantitatif yang menggunakan metode deskriptif dan studi eksperimental. Pengujian dilakukan melalui pengamatan struktur kristal memakai Difraktometer Sinar-X, uji kekerasan dan kuat tarik dengan Brinell. Hasil menunjukkan bahwa sifat mekanik dan fisik sangat dipengaruhi oleh proses quenching maupun tempering. Kekerasan material mengalami peningkatan setelah proses quenching dari 203 HB ke 393 HB menggunakan media quenching oli. Pada media pendingin air garam dapat meningkatkan kekerasan secara maksimal yaitu dari 203 HB ke 445,3 HB dan mengalami penurunan yang tidak signifikan kembali setelah melalui proses tempering. Penurunan kekerasan dari 445,3 HB ke 324 HB setelah 5 jam tempering. Penurunan ukuran kristal terjadi setelah proses tempering selama 5 jam yaitu dari 0,5766 (nm) ke 0,4725 (nm). Terjadi kenaikan nilai kerapatan diskolasi setelah proses tempering selama 5 jam yaitu 3,0679 (garis/mm²) ke 6,8527 (garis/mm²) begitu pula kenaikan regangan mikro setelah proses tempering selama 5 jam yaitu dari 0,1254 (ε) ke 0,2148 (ε).
Study Pembuatan dan Karakterisasi Paduan Ingat Bentuk CuAlZn Stefanus Andika Debby Purwanto; Budiarto; Bantu Hotsan Manullang; Syurkarni Ali; Din Aswan A Ritonga; Julian
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 2 (2023): Edisi Desember 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i2.10017

Abstract

A study on the preparation and characterization of CuAlZn shape-remembering alloys has been carried out. The objective of the study was to determine the effect of mass variation of Cu and Zn on crystal structure, hardness and tensile strength of CuAlZn shape-remembering alloys with powder metallurgy. Sintering at 900°C for 90 minutes, then cooled rapidly with air. The results of the tests performed show that mass variations in Cu and Zn metals can affect the hardness and tensile strength values of the alloy. The greater the mass of Cu metal and the smaller the mass of Zn metal, the higher the hardness and tensile strength values of the CuAlZn alloy remember the shape.The results of the test performed showed that variations in metal mass in Cu and Zn metal could affect the hardness and tensile strength values of the alloy. The greater the mass of Cu metal and the smaller the mass of Zn metal, will produce a higher value of hardness and tensile strength of Shape Memory Alloy.
Pengaruh Waktu Aging Terhadap Struktur Kristal dan Kekerasan Pada Mg-Zn Sebagai Material Biodegradable Ramanda Jiwa Satria Yohanes; Derlini; Budiarto; Sesmoro Max Yuda; Tony Siagian; Zakir Husin
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 2 (2023): Edisi Desember 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i2.10028

Abstract

Kemajuan teknologi dalam menangani kasus patah tulang (fraktur) belakangan ini berfokus pada metode pembuatan implan menggunakan material yang dapat diserap oleh tubuh (biodegradable) dengan syarat memiliki struktur dan kandungan yang menyerupai tulang manusia. Salah satu material yang menyerupai adalah magnesium (Mg) akan tetapi magnesium memiliki kekurangan dimana laju luruhnya tinggi sehingga memerlukan unsur lain sebagai paduan untuk mengurangi laju luruhnya. Dalam penelitian ini ditambahkan Zinc (Zn) yang memberikan manfaat untuk mengurangi laju luruh. Kombinasi Mg-Zn dalam implan dapat mempercepat proses penyembuhan tulang. Optimalisasi parameter untuk membuat paduan berpori Mg-Zn sebagai agen pengembang dengan melakukan variasi waktu kalsinasi 30, 60, dan 150 menit dengan temperatur tetap sintering 225°C. Karakterisasi struktur mikro paduan Mg-Zn dilakukan dengan pengujian XRD (X-ray Diffraction) dan untuk pengujian kekerasan dilakukan dengan metode Brinell. Hasil dari penelitian ini untuk ukuran kristal berdasarkan grafik cenderung menurun pada saat waktu kalsinasi 60 menit dan kembali naik pada waktu kalsinasi 150 menit. Untuk kerapatan dislokasi dan regangan mikro cenderung meningkat saat waktu kalsinasi 60 menit dan kembali turun pada waktu kalsinasi 150 menit. Sedangkan pengujian kekerasan paduan Mg-Zn semakin lama waktu kalsinasi maka semakin tinggi nilai kekerasannya. Kata Kunci: Kekerasan; Material Biodegradable; Metalurgi Serbuk; Paduan Mg-Zn; XRD
Perancangan Alat Pengering Pakan Ikan Lele Untuk Efisiensi Biaya Pembelian Pakan Upay Ripa’I; Wilarso Wilarso Arso; Awang Surya; Hilman Sholih; Asep Saepudin; Asep Dharmanto
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 2 (2023): Edisi Desember 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i2.10192

Abstract

Pakan ikan lele merupakan kebutuhan pokok yang harus dipenuhi agar budidaya ikan lele dapat berlangsung sehingga para pelaku budidaya ikan lele bisa selalu memenuhi permintaan konsumennya. Penyediaan pakan ini terkendala karena harga pakan yang semakin mahal dengan penjualan ikan lele sendiri sampai saat ini masih tergolong harga normal sehingga keuntungan dari hasil penjualan ikan lele hanya sedikit. Untuk mengatasi masalah ini, pelaku budidaya ikan lele berinisiatif untuk membuat pakan ikan lele sendiri dengan pakan jenis kering, maka dibuatlah alat pengering pakan ini sebagai alat bantu pada proses pengeringan agar pakan bisa cepat kering sehingga bisa menghemat biaya untuk membeli pakan dan keuntungan yang dihasilkan dari penjualan ikan lele bisa lebih besar. Penelitian ini bertujuan untuk menekan biaya pembelian, sehingga para pelaku budidaya ikan lele bisa mendapat keuntungan yang lebih besar bila dibandingkan dengan membeli pakan yang sudah jadi, hal lain yang mendasari penelitian ini dilakukan yaitu untuk mempermudah para pelaku budidaya ikan lele apabila ingin membuat pakan sendiri. Hasil penelitian ini yaitu apabila pelaku budidaya ikan lele ingin membuat pakan jenis kering sendiri, alat pengering ini bisa menjadi solusi agar pakan bisa lebih cepat kering dan dari segi keuntungan dari hasil penjualan ikan lele mendapat keuntungan yang lebih besar. Alat pengering pelet ikan ini bisa digunakan sebagai alat bantu proses pengeringan lebih cepat dibandingkan hanya dijemur sinar matahari. Kondisi pakan yang dikeringkan menggunakan alat pengering dapat terapung dan tidak hancur, kondisi pakan yang dijemur sinar matahari bisa terapung tetapi hancur. Dari segi biaya untuk pengadaan pelet lebih hemat
Analysis of Fouling Factors on Heat Transfer in Shell and Tube Heat Exchangers Type 1-2 Pass Aditya, Yudi; Irwansyah; Weriono; Indra Hermawan; Idris, Muhammad
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.6237

Abstract

A heat exchanger is a device that is used to change the temperature or fluid phase by absorbing or releasing heat between the hot fluid and the cold fluid. One type of heat exchanger that is most widely used in industry is shell and tube. Optimal heat exchanger performance has an important role to support production stability in various industries. The performance of shell and tube heat exchangers is affected by fouling factors which are the formation of deposits on the surface of the heat exchanger which can inhibit heat transfer and increase the resistance to fluid flow in the heat exchanger. After analysis, it is known that the mass flow rate of the flue gas is 0.06523 kg/s, the effectiveness of the heat exchanger is 66.837%, the overall gross area is 3.317350717 m2, and the effective heat transfer area is 2.211567145 m2.
Analysis of Heat Transfer in Shell and Tube Type Condensers Rifaldo, Zulpikar; Burhan Hafid; Zakir Husin; Etanto Heiliano Wijayanto; Idris, Muhammad
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.6238

Abstract

A heat exchanger is a device used to exchange or change the temperature of a fluid by exchanging heat with another fluid. One of the heat exchangers is a surface type condenser where the steam is separated from the cooling water, the steam is outside the pipes while the cooling water is in the pipes at PT. SOCIMAS. At PT. SOCIMAS, the condenser is part of the main cooling system which functions to condense steam into water and maintain the efficiency and work cycle of the turbine high. For this reason, this final project report focuses on condenser analysis. The results obtained from this final project are the value of the inner convection coefficient of 4056.6827 W/(m2.K) and the outer convection coefficient of 97414.18W/(m2.K) . value of heat transfer rate and effectiveness (ε) on the condenser PT. SOCIMAS obtained a heat transfer rate of 153.6001264 MW. While the effectiveness (ε), obtained 0.99571 % This shows that the condition of the condenser is quite good, because the steam can go to the condenser, so that the rate of heat transfer and the effectiveness of the condenser are able to condense the steam into liquid.
Analysis of the Effectiveness of Condenser Heat Transfer in the Distillation Process of Serai Wangi Leaves Karo Karo, Septa Fernando; Weriono; Din Aswan Ritonga; Darianto, Darianto; Muhammad Idris; Indra Hermawan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.6401

Abstract

The condenser is a critical component in systems designed to condense steam into liquid. The performance of a condenser can be influenced by the rate of heat transfer, vacuum pressure, and effectiveness. The aim of this research is to ascertain the effectiveness value and the variables affecting the performance of the condenser in the distillation process of citronella leaves, as well as to understand the impact of the heat transfer rate on film condensation (condensate steam mass). The methodology for assessing effectiveness values utilized the Log Mean Temperature Difference (LMTD) and Effectiveness – Number of Transfer Unit (NTU) approaches, alongside comparing the condensate steam mass with the steam mass flow rate to achieve film condensation. The research findings revealed an effectiveness value of 89% for the condenser, with 36% of the condensate steam mass converting into bio-oil. Influential variables include a capacity ratio of 0.0182840 and a heat transfer rate of 186,544.68 W. The LMTD was calculated to be 29.74°C. Thus, it can be concluded that the condenser used in the distillation process of citronella leaves still maintains good performance.
Design an Eddy Current Dynamometer with 0.85 mm Copper Wire and 560 Core Coil Windings Prasetyo, Rio Dwi; Adhes Gamayel; Mohamad Zaenudin
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 8 No. 1 (2024): June 2024 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v8i1.8081

Abstract

The eddy current dynamometer is a torque test measuring instrument calculated from the loading of an engine that rotates on its shaft to stop a rate from engine rotation and produce the engine loading power. The eddy current dynamometer is a torque test measuring instrument calculated from the loading of an engine that rotates on its shaft to stop a rate from engine rotation and produce the engine loading power. The braking system is one of the most important things in an engine, to stop the engine from moving braking is needed. This study aims to calculate the torque of the eddy current dynamometer. With a copper wire diameter of 0.85 mm and 560 windings of the core coil. Torque results show an increase in each variation in current and rotation. The torque power reaches its maximum point at 3000 RPM revolutions at 15V voltage at 25.4A amperes, namely 2.15 Nm. The number of windings on the wire coil is proportional to the magnitude of the solenoid value. The calculation of the maximum value induction at the center of the magnetic force pole core is obtained from the wire diameter of 0.85mm and 560 windings of the core coil at a voltage of 15V in amperes of 25.4A at a roller rotation of 3000 RPM of 254-4 Tesla or Wb/m2. And from both ends of the polar core solenoids, the result of magnetic strength is smaller than the magnetic induction center of the polar core, which is 127-4 Tesla or Wb/m2.

Page 16 of 22 | Total Record : 211

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