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Jurnal Mesin Nusantara
Published by Universitas Nusantara PGRI Kediri
ISSN : 27757390     EISSN : 26219506     DOI : https://doi.org/10.29407
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation
Jurnal Mesin Nusantara is a media publication for researchers who conduct research in the field of machinery. This journal is published twice a year, in June and December. Any research related to the topics in this journal can be sent to the editorial board for publication. The six (6) topics include Mechatronics, Product Design, Manufacturing, Energy Conversion, Metallurgy and Automotive.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 148 Documents
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Efisiensi Boiler dan Turbin Uap Untuk PLTU Unit 2 PT. XYZ Mubarak, Husni; Mahmuddin, Mahmuddin; Sungkono, Sungkono; Arham, Muhammad
Jurnal Mesin Nusantara Vol 7 No 1 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i1.21676

Abstract

PT. XYZ has an electric power capacity of 70 MW and began operating in 2014 during its operation there has been a decrease in power from 35 MW at the time of commissioning to 32 MW. This study investigates the impact of the air-fuel ratio (AFR) on the efficiency of a thermal system, focusing on the boiler, turbine, and overall thermal cycle efficiency. Variations in excess O2 in flue gas were examined at levels of 5.0%, 5.5%, and 6.0%. The results reveal that the boiler efficiency peaks at 5.0% excess O2 (73.50%), while an increase in excess O2 or AFR leads to a decrease in efficiency. Turbine efficiency remains relatively stable (74-76%) despite a slight decline with increased AFR. The thermal cycle efficiency reaches its maximum at an AFR of 13.61 (45.60%) but diminishes at higher AFR values.
Karakterisasi Tebal Lapisan Dan Ketahanan Korosi Mild Steel SS400 JIS G3101 Dengan Metode Elektroplating Ni-Cr Pakanna, Adi Aprians; Sumual, Hendro Maxwell; Pomalingo, Moh Fikri; Mansjur, Zuldesmi
Jurnal Mesin Nusantara Vol 7 No 1 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i1.21779

Abstract

Mild steel is steel with a concentration of carbon element below 0.3%. In its use as an oil storage tank material on fuel transport trucks, there is a problem, namely its resistance to corrosion in fuel. Sulfur compounds in fuel have a role in the formation of corrosion. Currently, the Ni-Cr electroplating coating method is very widely used as an effort to control the corrosion rate of carbon steel. The use of Ni-Cr as an anode is relied upon as a substance resistant to corrosion. Therefore, the purpose of this study was to identify how layer thickness affects corrosion levels in SS400 mild steel based on current variations and duration of the electroplating process. In this study using mild steel SS400 JIS G3101 with electroplating method (electroplating) varying the electric current 1A, 2A and 3A, as well as electroplating time of 10 minutes, 20 minutes and 30 minutes. The test parameters of the electroplating results are the actual layer thickness test, theoretical thickness test and corrosion rate test. Data processing was analyzed using two-way variance analysis. The thickness of the layer increases with increasing electric current and the length of time of Ni-Cr electroplating. The highest thickness value of 102.34 μm using a digital microscope while for theoretical testing of 98.33 μm, both were obtained at a current variation of 3A and an electroplating time of 30 minutes. The trend of corrosion rate value will decrease with the increase in electric current and the length of electroplating time with the lowest value of 0.003359 mmpy at a variation of electric current 3A and electroplating time of 30 minutes. For optimal values with the lowest corrosion rate on mild steel SS400 JIS G3101 as an oil storage tank material on fuel transport trucks, it is obtained by using a current of 3A and an electroplating time of 30 minutes Ni-Cr.
Smart machinery monitoring system berbasis mobile application Aminah, Siti; Maulana, Gun Gun; Rahman, Fikri Abdul
Jurnal Mesin Nusantara Vol 7 No 1 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i1.21797

Abstract

This research designs and implements a Mobile Application-Based Smart Machinery Monitoring System as a solution for monitoring machine conditions in industrial environments. Using Flutter as a mobile application development framework and utilizing internet connection capabilities, this research aims to increase monitoring efficiency and minimize the risk of machine failure. With a responsive interface, this application allows real-time access to machine conditions from various mobile devices. Internet of Things (IoT) integration allows machine sensors to communicate with applications, providing accurate and direct data. This research is expected to make a positive contribution to industrial operational efficiency, make it easier for users to monitor machine conditions, and support the industry's evolution towards an era of better connectivity.
Pengaruh Variasi Pembebanan Terhadap Performansi Mesin Diesel Single-Fuel Berbahan Bakar Dexlite dan Liquified Petroleum Gas Rahmandhika, Andinusa
Jurnal Mesin Nusantara Vol 7 No 1 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i1.21874

Abstract

Liquified Petroleum Gas (LPG) is an environmentally friendly alternative fuel, it would be a shame if it were not utilized. By making modifications to the diesel engine, it turns out that LPG can be used as a substitute for fuel oil. This research aims to determine the performance of a single-fuel diesel engine using Dexlite and 3 kg LPG. The method in this research is experimental research. Data was taken three times in each experiment with different load variations, then processed to obtain values for engine speed, torque, power, SFC and thermal efficiency. The research results show that the maximum torque value for dexlite and LPG is 22.4375 N.m. The maximum power value for dexlite and LPG is 3.9924 kW. The minimum SFC value for dexlite is 1.3089 kg/kW.hour while LPG is 0.9481 kg/kW.hour. The maximum thermal efficiency value for dexlite is 64.03% while for LPG it is 80.8%. The results of this research show that the torque and power values for each fuel have the same value, this is because the engine speed and load are the same. However, the SFC value and thermal efficiency of each fuel have different values, where the SFC value of 3 kg LPG is lower than Dexlite and the thermal efficiency value of 3 kg LPG is higher than Dexlite.
Pengaruh Penambahan Pigmen Warna pada Filamen PLA SUNLU Colors dan SUNLU Natural Ahmad, Noesanto Dewantoro; Sukamto, Sukamto; Pratama, Bagas Risda
Jurnal Mesin Nusantara Vol 7 No 1 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i1.21891

Abstract

3DP technology is experiencing rapid development and is widely used in various fields. PLA material is widely used as a material for making filaments used in 3D printing (3DP). PLA filament in 3DP is widely used because it has many advantages, including biocompatible, biodegradable, and non-toxic. When compared with other filament materials, PLA material is easier and safer to use because the temperature used is relatively lower so it is more energy efficient compared to other filament materials. SUNLU is a well-known manufacturer that provides various types of quality filaments, including PLA Colors and PLA Natural, where each type of SUNLU PLA filament has its characteristics and advantages. The choice of PLA filament type is adjusted to the desired printing needs, including the desired color and visual effect. The use of color pigments in PLA filaments with various color choices is used to produce objects that are more attractive and more flexible in their use in various fields. This experimental research was carried out to determine the effect of adding color pigments to SUNLU PLA Colors and SUNLU PLA Natural 1.75 mm filament samples with predetermined sample manufacturing variables. This research uses the ASTM D638 type V standard tensile test so that the tensile strength value of each sample can be determined and the maximum value from the tensile test can be determined. The results of this research will show a comparison of the tensile strength between SUNLU PLA Colors filament samples and SUNLU PLA Natural 1.75 mm. The tensile test results of the SUNLU PLA Natural sample had a higher value, namely 53.98 MPa, and for the SUNLU PLA Colors Orange and Gray samples, each had a tensile strength value of 46.58 MPa and 46.63 MPa. These results show that adding color pigments to the filament affects the strength of the resulting 3D-printed samples
Pengaruh Komposisi Pasir Kuarsa Terhadap Sifat Bata Tahan Api (Firebrick) Berbahan Kaolin Dan Fly Ash Handoko, Dwi; Pujarianto, Pujarianto
Jurnal Mesin Nusantara Vol 7 No 1 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i1.21978

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh komposisi pasir kuarsa pada pembuatan bata tahan api berbahan dasar kaolin dan fly ash. Kaolin merupakan bahan keramik yang memiliki kekuatan tinggi apabila dibakar pada suhu tinggi dan fly ash merupakan produk limbah dari pembakaran boiler. Unsur-unsur yang terkandung dalam fly ash adalah alumina (Al2O3), oksida besi (Fe2O3), silika (SiO2) dan kalsium, sulfur, dan magnesium karbon. Pasir kuarsa berfungsi sebagai bahan pengisi yang dapat meningkatkan kekerasan batu bata tahan api sekaligus meningkatkan ketahanan terhadap temperatur tinggi. Metode penelitian yang digunakan adalah metode eksperimen dengan membuat benda uji yang komposisinya bervariasi yaitu kaolin, fly ash dan pasir kuarsa dengan air yang konstan. Komposisi yang digunakan untuk kaolin dan fly ash diberi perbandingan persentase yang sama, dengan memvariasikan pasir kuarsa sebesar 0 (%), 10 (%), 15 (%), 20 (%), 30 (%). Pengujian yang dilakukan adalah uji massa jenis, konduktivitas panas, kuat tekan pada batu bata yang telah dipanaskan hingga suhu 1275°C, dimana hasil tersebut akan menjadi parameter untuk mengetahui komposisi terbaik. Hasilnya adalah dengan menambah komposisi pasir kuarsa terjadi peningkatan nilai densitas dan konduktivitas panas, sedangkan kuat tekan maksimum terjadi pada penambahan pasir kuarsa 10% yaitu sebesar 30,51 MPa
Pengaruh Media Pendingin Post–Weld Heat Treatment (PWHT) Terhadap Karakteristik Mekanik dan Struktur Mikro Baja Karbon Hasil Pengelasan Shielded Metal Arc Welding (SMAW) Mansjur, Zuldesmi; Suharto, Moh. Fachruddin
Jurnal Mesin Nusantara Vol 7 No 1 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i1.22434

Abstract

Post-Weld Heat Treatment (PWHT) selain berfungsi untuk menghilangkan tegangan sisa, juga untuk meningkatkan ketangguhan sambungan di daerah pengaruh panas/Heat Affected Zone (HAZ) dan memperbaiki butir-butir kristal suatu material. Parameter PWHT (waktu, temperatur dan media pendingin) sangat mempengaruhi peningkatan karakteristik mekanik dari material las, seperti: kekerasan, kekuatan tarik, keuletan, ketangguhan dan lain sebagainya. Penelitian ini bertujuan untuk mengetahui pengaruh media pendingin terhadap sifat mekanik (kekerasan dan kekutan tarik) dan struktur mikro baja karbon rendah ST42 hasil pengelasan SMAW. PWHT dilakukan pada temperatur 800 °C dengan tiga variasi media pendingin yaitu: air, udara, dan tungku. Hasil penelitian yang didapat adalah nilai kekerasan dan kekuatan tarik baja ST42 hasil pengelasan SMAW menjadi turun setelah dilakukan proses PWHT, namun elongation meningkat setelah PWHT. Diantara ketiga variasi media pendingin PWHT (air, udara dan tungku), nilai kekerasan dan kekuatan tertinggi dihasilkan pada baja las ST42dengan media pendingin air. Struktur mikro baja las S45C terdiri atas fasa ferite, perlite dan bainite. Ukuran butir baja tersebut menjadi lebih halus setelah PWHT dibandingkan dengan tanpa PWHT.
Pengaruh Jumlah Lubang Pendingin, Temperatur Pemanasan Dan Lebar Diameter Cetakan Terhadap Cacat Scratch Pada Cetakan Aluminium Firdaus, Rachmat; Akbar, Ali; Yulianto, Achmad Irfan; Mulyadi, Mulyadi
Jurnal Mesin Nusantara Vol 7 No 1 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i1.22435

Abstract

Alumunium dan Metal merupakan bahan material yang umum digunakan pada industry cetakan dan juga manufaktur sparepart mobil karena sifat materialnya yang padat dan keras. Produk berbahan aluminium sering memiliki masalah dalam proses produksinya yang bisa menimbulkan hal fatal yang lebih besar seperti udara yang terjebak dalam hasil cetakan alumunium, hasil cetakan memiliki ketebalan yang abnormal, dan juga adanya goresan non prediktif pada cetakan. Oleh karena itu, diperlukan penelitian tentang teknik analisa penggunaan cetakan yang baik agar tidak menimbulkan kegagalan cetakan. Penelitian ini di laksanakan secara eksperimen dengan tiga variable yaitu lebar gap, temperature dan jumlah pendinginan. Hasil dari penelitian ini menunjukkan Gap yang kecil dengan jumlah lubang pengingan yang sedikit timbul scratch atas dan bawah dengan temperatur yang paling rendah 670oC sampai temperature yang tinggi 750oC. Seiring dengan peningkatan lebar gap dan jumlah lubang pendinginan maka didapatkan pengurangan scrath. Dengan lebar gap space yang besar 0,3 mm maka scrath hilang meskipun jumlah lubang pendinginan yang sedikit maupun banyak dan temperature rendah sampai tinggi.
Manufaktur Prototipe Mobil Listrik SULA Politeknik Negeri Subang Efendi, Adhan
Jurnal Mesin Nusantara Vol 7 No 2 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i2.14075

Abstract

Penelitian ini bertujuan untuk membuat prototipe mobil listrik sula Politeknik Negeri Subang. Proses manufaktur melalui beberapa tahap seperti membaca desain rancangan, mengukur benda kerja, memotong benda kerja, penyambungan, assembly, dan uji coba. Proses ini sangat menunjang hasil akhir pada manufaktur rangka utama mobil listrik sula. Hasil rangka mobil listrik sula dilakukan dengan uji jalan trak 1 km dan beban penumpang 50 kg. Berdasarkan hasil penelitian dapat disimpulkan bahwa prototipe mobil listrik sula yang dibuat telah memenuhi standar untuk diikutkan dalam lomba mobil listrik Nasional.
PERANCANGAN SISTEM MONITORING PADA MESIN UJI PUNTIR BERBASIS ARDUINO Handoko, Dwi
Jurnal Mesin Nusantara Vol 7 No 2 (2024): Jurnal Mesin Nusantara
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jmn.v7i2.21977

Abstract

Pada penelitian ini dilakukan perancangan sistim monitoring pada mesin uji puntir manual berbasis microcontroller arduino untuk mendapatkan data momen puntir, sudut puntir dan perubahan defleksi pada spesimen. Sistem monitoring dibuat menggunakan perangkat lunak yang dapat menampilkan secara realtime grafik data momen puntir, defleksi dan sudut puntirnya. Sistem monitoring ini menggunakan sensor load cell, limit switch dan dial indikator yang akan mencatat berat, sudut putar dan defleksinya. Sensor tersebut akan dikalibrasi untuk mengetahui nilai kepresisian dari penggunaannya. Data yang didapat oleh sensor selanjutnya diproses dengan menggunakan mikrokontroler Arduino Mega dan diolah pada Microsoft Excel untuk ditampilkan datanya, output data pada perangkat lunak disimpan dengan format e xcel. Hasil pengujian kalibrasi mendapatkan fungsi persamaan load cell y = 6.6498x + 48.867 dengan tingkat keyakinan 99,98%. Pengujian puntir spesimen dengan perangkat lunak ini dilakukan pada material besi beton dengan dimensi Sesuai Standar ASTM dengan spesimen yang diuji berjumlah 4 pcs mendapatkan rata-rata tegangan puntir 0.40 dan rata-rata sudut puntir sesungguhnya 18.2120 rad.

Page 11 of 15 | Total Record : 148

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