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Turbo : Jurnal Program Studi Teknik Mesin
Published by Universitas Muhammadiyah Metro
ISSN : 23016663     EISSN : 2477250X     DOI : https://doi.org/10.24127
Core Subject : Engineering,
Mechanical Engineering
TURBO ISSN (print version) 2301-6663 & ISSN (online version) 2477-250X is a peer-reviewed journal that publishes scientific articles from the disciplines of mechanical engineering, which includes the field of study (peer) material, production and manufacturing, construction and energy conversion. Articles published in the journal Mechanical include results of original scientific research (original), and a scientific review article (review). Mechanical journal published by the Department of Mechanical Engineering, Faculty of Engineering, University Muhammadiyah of Metro for publishing two periods a year, in June and December with the number of articles 14-20 per year . Editors receive manuscripts in mechanical engineering from various academics, researchers and industry practitioners.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 509 Documents
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Analisis Biodiesel Sebagai Aditif Bahan Bakar Diesel Terhadap Kinerja dan Konsumsi Bahan Bakar Mesin Pembangkit Listrik Prasetiyo, Dani Hari Tunggal; Sidartawan, Robertus; Sanata, Andi; Yudhistiro, Danang; Nisak, Rima Zidni Karimatan
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3688

Abstract

Research on the use of biodiesel as renewable energy must continue to be carried out as an effort to reduce dependence on fossil energy. This research method was carried out using biodiesel from used cooking oil as an additive to fossil diesel fuel (dexlite). The fuel was tested on a diesel engine as a power generator accompanied by variations in power loading (load). The composition of biodiesel as an additive was (10, 20 and 30)% of fossil diesel fuel, while the power load used during testing was 100 to 700 watts. Testing was carried out to determine the performance and fuel consumption of a diesel engine as a power generator. The test results showed that the highest effective power value was in the D0 composition with a value of 278.18 watts with a power load of 700 watts, while the highest torque value was in the D0 fuel composition of 2.23 Nm at a power load of 700 watts. The lowest fuel consumption was in the D70BIO30 fuel composition of 114.25 seconds at a power load of 100 watts.
Pengembangan Freeze Vacuum Drying Dengan Sistem Kendali Menggunakan Reverse Valve Martin, Awaludin; Hermanto, Jheri; Agustina, Dinni; Surianto, Muhammad Akbar; Putri, Sunny Ineza; Khotimah, Nur
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3845

Abstract

The post-harvest handling process for rice aims to reduce the water content of rice grain, one of which is using the drying method. To maintain the quality of grain, evaluation and corrections are needed in handling so that losses can be minimized. Mechanical drying methods such as freeze drying are an effective vacuum solution, because they combine freeze drying and vacuum drying which have advantages in efficiency and quality of results. This vacuum dryer prototype has a maximum capacity of 10 kg of rice, the refrigerant used is R-134a, and the vacuum pressure that can be achieved is 5 bar below atmospheric pressure. This research will use variations in mass of 1 kg, 5 kg, and 10 kg, then the mass of 10 kg will be varied with refrigerant pressure of 14 bar, 15 bar, and 16 bar. The results of this test are that for the mass variation of 1 kg the air content that can be removed is 89% for 12.1 hours, for the mass of 5 kg the air content that can be removed is 85% for 15.3 hours, and for the mass of 10 kg the air content that can be removed is 76% for 17.5 hours. For variations in refrigerant pressure at a pressure of 16 bar 78% of the air content is lost for 19.8 hours, 15 bar 76% of the air content is lost for 19 hours, and 14 bar 62% of the air content is lost for 18 hours
Analisis Blow-by Tinggi Pada Traktor New Holland T7.150 sunaryo, sunaryo; mutaqin, dimas ahmad; hakim, legisnal
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3392

Abstract

Tractor is a tool that is often used in the process of agricultural land processing, a vehicle specially designed to handle heavy pulls at low speeds, or to pull special implements needed in agricultural activities. The use of tractors on a large enough land must of course carry out routine maintenance, especially on engines which have a limited operating time, within a certain limit it is necessary to check the components after reaching the maximum time limit. This analysis was carried out during November 2023 - February 2024. Secondary data collection was carried out by making direct observations on the Newholland T7.150 Tractor unit during the design and operation of the unit. Identification is carried out while the unit is operating, this aims to determine the effectiveness of the engine on the tractor, the occurrence of high blow-by engines and the factors that cause them. The blow-by pressure test results showed that the blow-by pressure in the engine was at a level far exceeding the maximum limit of 20.42 cm H2O (8.047 In H2O), indicating a serious problem with the sealing between the piston and cylinder. When the compression test was carried out, normal compression results were found, indicating that the compression pressure in the engine was stable at a level in line with normal standards, also indicating that the components in the combustion system were functioning properly. From the analysis, phenomena related to high blow-by caused by improper ring gap and valve seal leakage in the engine were investigated. The analysis shows that the out-of-specification ring gap and leakage at the valve seal can result in uncontrolled leakage of fuel and combustion gases into the engine crankcase.
THE INFLUENCE OF VARIATION MODEL OF BRASS CATALYTIC CONVERTER ON EXHAUST EMISSIONS AND ENGINE PERFORMANCE Karyasa, Tungga Bhimadi; Syamsuri, Syamsuri
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3608

Abstract

The increase in motorized vehicles has resulted in air pollution. The result of incomplete combustion causes disease and contributes to global warming. From the problem of incomplete combustion residues, the researcher studied reducing exhaust emissions using brass catalytic converters with Flat Perforated Plate Type, Folded Perforated Plate Type, and Rolled Brass Sheet models. This research method used a Revo Absolute motorcycle's idle engine speed of 2000 rpm. This test used a gas analyzer and a dyno test. This study found a significantreduction in carbon monoxide (CO) and hydrocarbon (HC) exhaust emission levels using the folded perforated plate type catalytic converter model compared to other models and standard exhaust. CO exhaust emission results produced 0.52% by Folded Perforated Plate, 1.6% by Rolled Brass Sheet, 1.7%by Perforated Plate Type, and 2.1% by standard exhaust. HC exhaust emissions resulted in 475 ppm on the Folded Perforated Plate, 755 ppm on the Rolled Brass Sheet, 1517 on the Perforated Plate Type, and 1857 on the standard exhaust. This research concluded that a brass catalytic converter could reduce exhaust emission levels. Engine performance power and torque were almost the same for all models.
METODE DESAIN VDI 2221 UNTUK MERANCANG MESIN UJI MIKRO FATIK TIPE CANTILEVER ROTATING BENDING LOAD DENGAN SISTEM KONTROL HUMAN MACHINE INTERFACE basyari, aziz basyari
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3718

Abstract

Mesin uji mikro fatik digunakan dalam pengujian fatik untuk menentukan parameter kekuatan fatik (fatigue strength) dan umur fatik (fatigue life) dari bahan logam. Spesimen mikro banyak digunakan pada industri kesehatan.. Prinsip mesin uji ini didasarakan pada adaptasi teori teknis pembebanan cantilever. Metode pemilihan desain didasarkan pada metode VDI 2221 untuk menentukan desain terbaik dari beberapa varian desain. Bagian utama mesin ini terdiri dari : Human Machine Interface (HMI) dan control box, Motor dan Inverter, Kopling (Pencekam Spesimen), Limit switch, Beban Pemberat dan Dudukan Peralatan. Mesin Uji Mikro Fatik Tipe Cantilever Rotating Bending Load Dengan Kontrol HMI  akan menghasilkan data  pengujian fatik berupa nilai kekuatan fatik (S: Strength ) dan jumlah siklus pembebanan (N: Number of Stress Cycle) secara realtime dan mampu kontrol dan dipantau melalui jaringan internet .
Evaluasi Unjuk Kerja Boiler: Studi Kasus pada Pabrik Pulp dan Kertas PT. ABC Nasution, Fikri Fahlevi; Khotimah, Nur; Sihombing, Tikkos; Martin, Awaludin
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3119

Abstract

In process industries or power generation, boilers are one of the first components to consume energy. Moreover, poor combustion, heat transfer fouling, and improper operation and maintenance lead to a gradual decrease in efficiency. In addition, poor fuel and water quality cause boiler performance to decrease. As a result, efficiency testing helps determine how far the boiler efficiency deviates from the best efficiency level. A complete energy audit of the boiler was conducted at PT. ABC Pulp and Paper Mill with ASME (American Society for Mechanical Engineers) power test code, PTC 4.1. Direct method is an input-output method, and Indirect mehod is a method of heat loss that occurs in the boiler. The direct method shows an efficiency of 84.46% and the indirect method shows an efficiency of 78.73%. Based on direct and indirect methods showing a difference of 5.73%, it is reported that the total heat loss is 21.26% where the highest is in the dry flue gas of 14.88%, namely the incoming heat energy is carried away with dry flue gas.
Desain Parameter Untuk Minimasi Cacat Black Spot Dalam Proses Extrusion Blow Molding Pada Produk Bottle Blank 200 Gram Rachel, Djoehana Ayu
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3523

Abstract

Defect bintik hitam sering kali menjadi masalah dalam produk plastik hasil cetak extrusion blow molding, yang dapat menurunkan kualitas dan nilai produk. Penelitian ini bertujuan untuk mengkaji pengaruh temperature barrel, kecepatan putaran screw, dan komposisi material regrind terhadap cacat bintik hitam pada produk HDPE. Menggunakan metode Design of Experiments (DoE) dengan rancangan factorial, percobaan dilakukan dengan tiga level untuk setiap variabel bebas: temperatur barrel (175°C, 198°C, 221°C), kecepatan putaran screw (82 RPM, 90 RPM, 98 RPM), dan komposisi material regrind (40-60%, 60-40%, 80-20%). Data yang dikumpulkan dianalisis menggunakan ANOVA dan regresi linear untuk menentukan signifikansi pengaruh dan interaksi antar variabel. Hasil menunjukkan bahwa temperatur barrel dan komposisi material regrind memiliki pengaruh signifikan terhadap cacat bintik hitam, dengan interaksi yang paling kritis terjadi pada kombinasi temperature tinggi (221°C), kecepatan putaran screw tinggi (98 RPM), dan komposisi material regrind tinggi (80% regrind - 20%murni). Kesimpulan utama penelitian ini adalah pengaturan parameter yang optimal dapat meminimalkan cacat bintik hitam, meningkatkan kualitas produk secara keseluruhan. Rekomendasi diberikan untuk pengaturan parameter yang lebih baik guna mencapai hasil produksi yang lebih konsisten dan berkualitas tinggi.
Kebocoran Oli Engine Turboprop Akibat Vibrasi Dari Ketidak-seimbangan Rotor AC Wild Generator Prabowo, Barly
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3785

Abstract

Kebocoran oli yang berasal dari sambungan engine dengan komponen kelistrikan yaitu AC wild generator yang dicurigai terjadi karena ketidak- seimbangan rotor pada AC wild generator yang menyebabkan terjadinya vibrasi.  Kebocoran oli pelumas pada engine pesawat turboprop dapat terjadi karena beberapa sebab seperti karena deformasi seal yang diakibatkan oleh getaran akibat ketidak-seimbangan rotor. Dalam penulisan ini akan dilakukan pengujian pada rotor ACW Generator dengan menggunakan Schenck Dynamic Balancing Machine untuk memperoleh data ketidak-seimbangan rotor. Hasil nilai pengujian unbalanced pada 4 ACW generator menunjukkan nilai total unbalanced pada masing-masing benda uji adalah sebesar 36,03 g.mm (2.132%), 28,97 g.mm (1.714%), 6,67 g.mm (395%), 25,65 g.mm (1.518%). Dari hasil pengujian dan analisis dapat diambil kesimpulan bahwa telah terjadi unbalanced over limit pada ke-4 bahan uji dengan rata-rata total unbalanced pada plane 1 dan plane 2 sebesar 24,33 g.mm (1.440%) atau sebesar 14x batas maksimal ambang batas yang diijinkan oleh maintenance manual yaitu 1,69 g.mm yang memungkinkan terjadinya getaran pada shaft rotor dan menyebabkan kerusakan pada seal sehingga menyebabkan kebocoran. Dari pengujian tersebut dapat diberikan kesimpulan penyebab kebocoran oli disebabkan oleh ketidak-seimbangan rotor AC wild generator.
Pengaruh Filter Proses Elektroplating Terhadap Hasil Kekasaran Permukaan, Biaya Oprasional dan Uji Pantul Cahaya Rae, Ade; asroni, asroni; wahyudi, tri cahyo
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3778

Abstract

Elektroplating merupakan teknik pelapisan logam dengan memanfaatkan prinsip elektrolisis, di mana satu logam dilapisi dengan logam lain dalam larutan elektrolit mempergunakan arus listrik, serta menghasilkan lapisan yang lebih seragam, adhesi yang kuat, dan tampilan permukaan yang lebih baik. Tujuan dari penelitian ini Untuk mengetahui pengaruh filter terhadap hasil kekasaran permukaan, biaya oprasional serta nilai pantul cahaya pada proses elektroplating. Metode penelitian yang dipergunakan ialah metode eksperimental diamana,material dengan ukuran 70 mm x 35 mm x 3 mm dilakukan proses elektroplating selama 30 menit setelah itu dilakukan pengujian kekasaran permukaan, uji pantul cahaya serta mengitung biaya oprasional. Hasil dari pengaruh filter terhadap nilai kekasaran didapatkan nilai (Ra) 0,219 µm (filter digunakan) serta (non-filter) dengan nilai Ra 0,376 µm. Sedangkan biaya oprasional untuk sekali peroses pelapissan pada elektroplating yakni sebesar Rp 52.145. Nilai reflektansi cahaya terdapat korelasi positif antara kebersihan larutan elektrolit dan nilai reflektansi lapisan, di mana semakin bersih larutan elektrolit, semakin tinggi nilai reflektansinya
PENGARUH VARIASI MEDIA QUENCHING TERHADAP KEKERASAN DAN STRUKTUR MIKRO MATERIAL PADUAN Al-Si-Cu-Fe Shieddieque, Apang Djafar
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3383

Abstract

meningkatnya tuntutan efisiensi energi dan material yang ringan namun kuat adalah tantangan utama yang dihadapi untuk meningkatkan kekuatan aluminium tanpa mengorbankan sifat-sifat unggul lainnya. Hal ini didukung dengan sifat mekanik dari alumunium yang sudah dimodifikasi. Setiap metode memiliki efek yang berbeda terhadap sifat mekanis dan mikrostruktur aluminium, sehingga pemahaman mendalam tentang teknik penguatan sangatlah penting. Proses perlakuan panas (Heat treatment) digunakan untuk meningkatkan sifat mekanik aluminium, seperti kekuatan dan keuletan. Parameter seperti suhu, waktu pemaparan, dan laju pendinginan mempengaruhi hasil akhir dari Heat treatment. Tujuan dari penelitian ini adalah mengetahui pengaruh variasi media quenching terhadap perubahan struktur mikro dan kekerasan paduan Al-Si-Cu-Fe. Pengujian yang dilakukan berupa pengujian kekerasan dan pengamatan metalografi. Dari hasil penelitian didapatkan bahwa perlakuan panas quenching dengan perbedaan variasi media quenching cenderung mempengaruhi tingkat kekerasan Al-Si-Cu. Dari hasil pengujian kekerasan, nilai rata-rata kekuatan tertinggi didapatkan dengan media quenching air sebesar 75,484 BHN. Variasi media pendingin akan merubah struktur mikro melalui penyebaran partikel Si dan morfologi partikel Si. Hasil pengujian kekerasan dan hasil pengamatan struktur mikro spesimen dengan media quenching air memiliki struktur mikro dengan bentuk partikel Si paling halus dan penyebaran partikel Si yang banyak sehingga tingkat kekerasan pada spesimen dengan media pendingin air paling tinggi.

Page 41 of 51 | Total Record : 509

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