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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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Analisis Pengaruh Bio Additive Pada Bahan Bakar Terhadap Unjuk Kerja Mesin 4 Langkah Poppy Aprilya Sitorus; Rahmatullah Rahmatullah; Darianto Darianto; Muhammad Idris
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 6 No. 2 (2022): Edisi Desember 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i2.6869

Abstract

Bioadditives are elements derived from plants that are used as additives to improve fuel quality. Citronella oil is one type of essential oil that has been studied for its potential as a fuel bio additive because of its volatility and ability to dissolve into fuel. The purpose of using this bioadditive is to increase engine performance. This research was conducted using an experimental method, some of the samples tested consisted of pertalite fuel, bioethanol then the development was carried out by adding the Bioadditive element citronella oil to the fuel with a ratio of 2,0 : 1000 ml, 3,0 : 1000 ml, and 3,5 : 1000 ml. The sample test was aimed to measure engine performance using a dynamometer. The results of this study show that the use of citronella bioadditives can improve motorcycle performance, the maximum power increases by 55% at a ratio of 2,0 : 1000 ml, and the optimum torque is achieved by 39% at a ratio of 2,0 : 1000 ml. In addition to these tests, measurement of fuel consumption is also carried out by producing a savings of 10%, using a ratio of 2,0 : 1000 ml.
Pengaruh Temperatur Kalsinasi Terhadap Gugus fungsi, Struktur mikro, Dan Kerapatan dislokasi Pada Material Katoda Baterai LiNiO2 Budiarto
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 6 No. 2 (2022): Edisi Desember 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i2.6905

Abstract

Battery cathode material is one of the four determinants of energy storage capacity, which is used as a power source in electronic equipment. laptops, and electric vehicles. Synthesis of LiNiO2 battery cathode material by solid state method, and variations in calcination temperature from 700 oC,  775 oC, and 850 oC , as wll as a fixed time of 6 hours. The results of the analysis using the FTIR spectrum showed that the vibration mode correlated with the vibrations of the octahedral units of NiO6 and LiO6 in the wave number zone of 400 - 700 cm−1. Thus, the peak around 433 cm−1 is caused by the Li–O asymmetric strain vibration of LiO6 and the NiO6 bending vibration, namely [(Ni–O–Li)], occurring at 551-603 cm−1. The results of the observation of the microstructure with SEM showed the size of the micron with an uneven and homogeneous surface. The elemental compositions of Li and Ni metals were analyzed by EDXS showing that the metal content of Li and Ni decreased as the calcination temperature increased. The results of the crystal structure test using an X-ray diffractometer showed that with the increase in the calcination temperature, the average diameter of the crystallites decreased, but the average dislocation density increased and the mean micro-lattice strain also increased ( 0.4817% to 15.8079%) and in the Miller hkl index plane. (102), (104), (210), (108), and (113).  
Simulasi Distribusi Suhu Tekanan dan Kecepatan Gas Dalam Pipa Pirolisis Pada Reaktor - Kondensor Silviana Simbolon; Yeremia Setia
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 6 No. 2 (2022): Edisi Desember 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i2.7186

Abstract

In pyrolysis technology there are various geometric factors that affect the results of pyrolysis, one of which is the connecting pipe between the reactor and the condenser. In this study, simulations were carried out with simscale software to analyze the temperature, pressure and gas velocity in the pyrolysis pipe as the length of the pipe increases. The material used is stainless steel AISI 304. This research begins by determining the dimensions and materials of the pyrolysis pipe, the length of the pipe and the input temperature. The length of the pipe was varied by 1.5 m, 1.75 m and 2 m, with initial temperature variations of 450°C and 550°C, respectively. From the simulation result, Increasing of the pipa’s length then the heat transfer will be close to the optimum condition. So that the output temperature, pressure and velocity will be lower. This happens because the length and diameter of the pipe affect the output. From the simulation results, pipe lengths of 1.5 m, 1.75 m, 2 m with input temperatures of 450°C and 550°C obtained the best results for a pipe length of 2 m with an input temperature of 450°C.
Analisis Dampak Kesalahan Dalam Simulasi Manajemen Elektronik Mesin Pada Pengoperasian Kendaraan Bermotor Yuliarman Saragih; Falentina Lavi; Kintania Pracipta; Ahmad Al-Baehaqi Salam; Puji Waluyo
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 6 No. 2 (2022): Edisi Desember 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i2.7216

Abstract

For internal combustion engine electrical management in order for an engine to function properly, all its electronic components must function and play their role. Failure of these electronic components may result in improper preparation of the fuel mixture. This also affects driving safety. The impact of individual errors can have a negative impact on traffic safety and can also have a negative impact on other participants. The subject of this study was to investigate the impact of failure of electronic components on selected operating characteristics. This article is to determine the failure rate of electronic mechanical components and can affect the operation of road vehicles. Eight electronic system faults are simulated with specific vehicles and use fuel assemblies in gasoline fuel. Measurements were made based on laboratory conditions that gave to change the characteristics of the vehicle handling between damage and corruption. Making the vehicle power parameters and the selected exhaust emission components are determined for the selected vehicle characteristics. The results show that the engine failure of the electronic system has a great impact on the operating characteristics, and at the same time there are situations in the normal operating state of the vehicle in which some of these defects are unknown to the vehicle operator ricefield. The results of the publication can be used in the fields of written law, production and operation of road vehicles, and mathematical modeling of gas emission production from road transportation.
Fabrication and Performance Analysis of AZO and MCCO as Thin Film-Thermoelectric Generator Materials Elysa Nensy Irawan; Fahrur Aslami; Aldo Mahendra Putra; Somporn Thaowankaew; Wanatchaporn Namhongsa; Athorn Vora-Ud; Kunchit Singsoog; Tosawat Seetawan4; Melania Suweni Muntini
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 6 No. 2 (2022): Edisi Desember 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i2.7317

Abstract

The purpose of this research was to determine the performance of AZO and MCCO materials as constituents of the thin film-thermoelectric generator module. The method used for fabrication is DC Magnetron Sputtering. The electrode material used is Ag and the substrate used is SiO2 glass. The arrangement of the thin film used for the fabrication of the thermoelectric module is P-N-P-N-P-N-P-N-P-N (5 couples of p-n junctions). Based on the test results, the thickness of the thin film type N is 74.72 nm and type P is 90.34 nm. At the highest test temperature (300 oC), the AZO Seebeck coefficient value is -108 µV/K while the MCCO Seebeck coefficient value is 350 µV/K, and the AZO electrical resistivity value is 0.07 Ω.m while the MCCO electrical resistivity value is 0.36 Ω.m. The highest temperature difference given in the test of the AZO and MCCO thin film thermoelectric module is 1.538 °C and the thermoelectric module can produce a voltage of 1,842 ± 0.047 mV, a Seebeck coefficient of 4 µV/K, and an efficiency of 0.44%. Based on this research, it can be concluded that the performance of AZO and MCCO thin film-thermoelectric modules will have better performance at temperatures around 300 - 350 °C.
Analisa Perbandingan Kinerja Boiler Tanpa dan Dengan Menggunakan Glasswoll sebagai Isolator Safri Gunawan; Supriadi; Hendra Susilo; Fadhlah Sinurat
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 6 No. 2 (2022): Edisi Desember 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v6i2.7396

Abstract

This study discusses the performance of boiler without and with insulation as a parameter that affects the performance of boiler. The purpose of this study is to compare the performance of boiler without using an insulator and with an insulator. The performance of the boiler is seen from the length of time reaches a boiling temperature at a pressure of 5 bar, the decrease in boiler temperature after reaching a pressure of 5 bar, and the duration of the boiler pressure reaching a pressure of 5 bar. The research method used was 14 liters of water and 4 kg of coconut shell. The first research was carried out without using insulation, furthermore it was continued by isolating the boiler using glasswool with the same conditions. The results obtained in boilers without and with glasswool insulation are very significant. Where the duration of boiling water is up to 41 minutes and 25 minutes, respectively. In addition, the final temperatures after 77 minutes and 118 minutes were 88.4 oC and 145 oC, respectively for boilers without and with insulators. The conclusion in this study states that the insulator greatly affects the performance of the boiler.
Analisis Pembangkit Listrik Termoelektrik Generator Diradiasi Oleh Panas Matahari Felix Sigalingging; Weriono Weriono; Muhammad Idris; Indra Hermawan; Darianto; Amru Siregar
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 1 (2023): Edisi Juni 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i1.6191

Abstract

Pemanfaatan Energi terbarukan yaitu Energi Panas Matahari ( Solar Cell) yang dipakai berbagai maanfaat mulai dari solar cell, pencahayaan tenaga surya, pemanas ruangan cahaya, dan juga pemanfaatan pada termoelektrik. Di penelitian ini pemanfaatan energi panas matahari yaitu sumber panas. Pengertian termoleketrik adalah suatu perangkat yang mengubah energi kalor (akibat dari perbedaan temperatur panas dan temperatur dingin) menjadi energi listrik. Penelitian ini mengggunakan satu buah heatsing 10 sirip dan 6 buah termoelektrik dan juga ada tambahan perbandingan elemen panas yaitu plat baja. Berdasarkan hal itu, maka pengerjaan tugas akhir ini merancang dan menganalisis pembangkit emergi lstrik sederhana dengan memanfaatkan energi panas matahari dengan metode ternoelektrik. Berdasarkan hasil percobaan selama 3600s menghasilkan yang tanpa menggunakan plat baja tegangan 0.17 V, arus 0.008 A dan daya 0.00141 W, dan menggunakan plat baja tegangan 0.31 V, arus 0.009 dan daya 0.00305 W.
Perancangan Alat Uji Impak Anak Panah Jatuh Bebas untuk Menguji Lembaran Plastik dengan Kapasitas 120 gr Goodman Pakpahan; Muhammad Yusuf Rahmansyah Siahaan; Rakhmad Arief Siregar
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 1 (2023): Edisi Juni 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i1.6295

Abstract

Pengujian impak merupakan suatu pengujian untuk mengukur ketahanan bahan terhadap beban kejut (dinamis). Pengujian impak mensimulasikan kondisi operasi material yang sering ditemui dimana beban tidak selamanya terjadi secara perlahan-lahan melainkan datang secara tiba-tiba. Alat uji impak yang akan dirancang dalam penelitian ini merupakan alat uji impak jatuh bebas. Alat uji impak ini memanfaatkan massa benda serta gaya gravitasi. Pengujian ini bertujuan untuk menganalisa pengaruh pembebanan impak jatuh bebas pada plastik yang dijatuhkan dari ke tinggian 0.66 m. Langkah yang dilakukan dalam penelitian ini meliputi pengujian dan pengambilan data untuk mengetahui energi yang diserap, harga impak, momentum, implus dan ketangguhan pada material baja struktur saat diberi beban kejut. Pada pengujian impak jatuh bebas ini, mempunyai jarak dan berat beban yaitu pada beban (m) = 30, 45, 60 gr dengan jarak ketinggian (h) = 0.66 m.
Analisa Quality Control Pada Fixed Tube Sheet Tube Bundle di PT. PAL Indonesia Maisarah Azizah; I Made Arsana; Yunus Yunus
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 1 (2023): Edisi Juni 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i1.7520

Abstract

Sebagai industri manufaktur yang telah berkarya selama 42 tahun, PT. PAL Indonesia terus berdedikasi dalam menghasilkan produk-produk unggulan di bidang kapal maupun non kapal. Produk non kapal salah satunya yaitu tube bundle dari heat exchanger. Untuk menghasilkan sebuah produk yang baik, maka dalam proses produksinya perlu dilakukan pengendalian mutu atau kualitas. Bergerak di bidang pekerjaan pada benda kerja yang relatif besar, pengendalian kualitas dilakukan dengan pengujian yang bisa berupa dimension check, magnetic test, ultrasonic test, hydrostatic test dan lain sebagainya. Penelitian ini bertujuan untuk menganalisa quality control pada salah satu komponen tube bundle yaitu fixed tube sheet. Metode quality control yang digunakan yaitu Statistical Quality Control (SQC) dengan alat bantu peta kendali, diagram batang, dan fishbone diagram. Jenis penelitian ini adalah penelitian kuantitatif dengan pengumpulan data diperoleh dari observasi dan wawancara. Pengambilan sampel dilakukan dengan cara acceptance sampling. Sampel yang diambil yaitu alur dalam pada komponen fixed tube sheet yang berjumlah 300 dari total keseluruhan 1036. Analisa dilakukan terhadap ketidaksesuaian diameter alur dalam fixed tube sheet. Setelah diketahui sebab-akibat kegagalan dari komponen tersebut, proses produksi dapat dilakukan dengan hasil akhir sesuai standar.
Perancangan Sepeda Roda Tiga Pasca Stroke Dengan Mekanisme Penggerak Elektrik Rosadila Febritasari; Gerald Adityo Pohan; Febi Rahmadianto; Tito Arif Sutrisno; Ajiman Budi Mardika; Achamd Alphafill Ibrahimy Yusuf; Agung Rusdi Wibowo; Subur Sujatmiko; Mohammad Rahma Dhani
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 7 No. 1 (2023): Edisi Juni 2023
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v7i1.7552

Abstract

Konstruksi sepeda roda tiga memiliki keseimbangan yang baik dan dapat meminimalisir resiko terguling sehingga aman menjadi media rehabilitasi fisik bagi penderita stroke dan sangat berguna dalam memulihkan pergerakan motorik pada kaki dan mengurangi tekanan hidup penderita stroke. Namun, pada kondisi tertentu seperti di tanjakan dan kelelahan, penderita stroke tidak memiliki cukup tenaga untuk mengayuh sepeda ke rumah mereka. Oleh karena itu, perlu dirancang sebuah mekanisme penggerak elektrik (electric support) dengan motor listrik pada sepeda roda tiga konvensional dan dilengkapi dengan baterai untuk menyimpan sumber listrik, disamping dapat dikayuh secara manual. Dengan tujuan, penderita stroke dapat kembali pulang dengan menyalakan motor listrik yang membuat kayuhan menjadi lebih ringan terlebih lagi di jalan menanjak. Penelitian ini dilakukan dengan cara menentukan tenaga dorong yang diperlukan, merancang dan menyeleksi konsep mekanisme gerak sepeda elektrik, kemudian menganalisa kekuatan material pada rangka dan keergonomisan berkendara. Hasil yang didapat dari penelitian ini berupa rancangan sepeda roda tiga elektrik model delta dengan dimensi panjang sepeda 1.5 meter, jarak antara roda belakang adalah 0.66 meter, dan tinggi sepeda 1.1 meter. Mekanisme penggerak elektrik terdiri dari motor listrik 500W bertipe mid-drive dengan Pedal Assistance Sensor (PAS) dan baterai Lithium berkapasitas 48V-14Ah. Rancangan sepeda ini mampu menahan beban pengendara maksimal 100 kg, dan akan digunakan di jalan menanjak. Material rangka adalah AISI Alumunium 6061 dengan tegangan yang diijinkan sebesar 277.6±8.3 MPa. Hasil analisis kekuatan material menunjukkan tegangan kritis rangka sebesar 84.932 MPa terjadi pada daerah pertemuan pipa seat stay dan sandaran. Tegangan kritis yang terjadi lebih kecil daripada tegangan yang diijinkan sehingga dinyatakan aman.

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