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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 Pengaruh Penambahan Fan pada Instalasi Air Conditioner dan Putaran Engine terhadap Temperatur Cabin dan Coeffisient of Performance Ahmad Yani; Yano Hurung Anoi; Miswan Prastiawan
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 1 (2019): Juni 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (445.401 KB) | DOI: 10.24127/trb.v8i1.918

Abstract

Pendingin adalah suatu proses yang dilakukan untuk menurunkan temperature suhu. Pendingin dilakukan dengan cara memindahkan kalor dari objek yang akan didinginkan ke lingkungan. Maka dari itu dalam proses pendinginan pada system AC mobil diperlukan media yang digunakan pendingin yaitu menggunakan refrigerant. Memodifikasi instalasi AC ini dengan melakukan penembahan fan ini bertujuan untuk memaksimalkan kinerja semua komponen air conditioner yang terdapat pada mobil Mitsubishi triton double cabin. Fan yang digunakan mempunyai daya sebesar 12 volt dan hanya beroprasi ketika AC dinyalakan dan AC hanya bisa digunakan ketika mesin menyala oleh sebab itu battery pun tetap awet setelah penambahan fan ini karena saat fan berputar battery akan tetap terisi oleh altenator pengisian yang bergerak mengikuti putaran mesin, sehingga tidak begitu membebani daya mobil yang berkapasitas 2500 CC.Berdarakan hasil penelitian, temperatur terendah terjadi setelah penambahan fan dengan nilai temperatur sebesar  14,4 oC pada putaran mesin 3000 dan temperatur tertinggi sebesar 21,3 oC pada putaran mesin 1000 rpm. Sedangkan sebelum penambahan fan temperatur terendah sebesar 20 oC pada putaran mesin 3000 dan temperature tertinggi sebesar 24,3 oC pada putaran mesin 1000 rpm. Sedangkan nilai COP Carnot tertinggi terjadi setelah penambahan fan dengan nilai nilai COP Carnot 10,730 pada putaran mesin 1000 rpm dan nilai COP Carnot terendah 9,729 pada putaran mesin 3000 rpm. Sedangkan sebelum penambahan fan nilai COP Carnot tertinggi sebesar 10,299 pada putaran mesin 1000 dan nilai COP Carnot terendah sebesar 8,613 pada putaran mesin 3000 rpm.Kata kunci: Fan, rpm, engine, temperatur dan COP
Analisa Pengaruh Berat Roda Daya terhadap Akselerasi Kendaraan Toyota Kijang 7K Ratnawati Ratnawati; Mimin Septiani; Fitria Fitria
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 1 (2019): Juni 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v8i1.911

Abstract

 Analisa pengaruh berat roda daya (Flywheel) sangatlah berguna dalam dunia otomotif pada kendaraan roda empat khususnya mesin 7k. Dalam dunia otomotif kita dapat mengetahui kecepatan dan percepatan suatu kendaraan. Tujuan penelitian ini untuk mengetahui perubahan kecepatan kendaraan akibat adanya   perubahan berat roda daya dan mengetahui perubahan percepatan kendaraan akibat adanya perubahan berat roda daya dengan berat yang tertentu.Dari hasil perhitungan  analisis  berat roda daya 95,06 kg dengan putaran maksimum 2800 rpm, maka kecepatan kendaraan yang dihasilkan sebesar (V) 64.87 km/jam dan pada saat dimensi berat roda daya mengalami pengurangan berat hingga 86,24 kg menghasilkan putaran mesin 2939,23 rpm dan menyebabkan naiknya kecepatan kendaraan (V) 68,05 km/jam dan percepatan kendaraan Pemakaian roda daya standar dengan berat 95,06 kg dengan putaran maksimum mesin 2800 rpm kendaraan mengalami percepatan 13,161 m/s² dan pada saat dimensi berat roda daya mengalami pengurangan berat hingga 86,24 kg dengan menghasilkan putaran maksimum 2939,23 rpm kendaraan mengalami percepatan 13,246  m/s. Kata Kunci: Pengaruh, flywheel , akselerasi, mesin 7k. 
Upaya Peningkatan Kualitas dan Kapasitas Produksi Mesin Pengupas Kulit Kopi Kering Eko Budiyanto; Lukito Dwi Yuono; Andrianto Farindra
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 1 (2019): Juni 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (832.155 KB) | DOI: 10.24127/trb.v8i1.926

Abstract

Pengolahan kopi kering sangat berpengaruh pada kualitas kopi yang dihasilkan. Selain itu hasil produksi pengupasan kulit kopi kering kurang baik karena terlalu lambat, sehingga banyak waktu yang diperlukan dalam proses pengupasan kulit kopi kering tersebut. Penelitian ini bertujuan untuk mengetahui pengaruh jumlah mata silinder dan putaran terhadap kualitas dan kapasitas produksi pengupasan yang dihasilkan. Penelitian ini dilakukan dengan cara memvariasikan jumlah mata silinder dan putaran mesin pengupas kopi kering. Jumlah variasi mata silinder alat pengupas kulit kopi kering  adalah 3, 5, dan 7 mata silinder. Bentuk susunan mata silinder pengupas horizontal, degan ketebalan 1 cm. Pengujian dilakukan  pada putaran 300, 400, 500 rpm. Mesin pengupas kulit kopi menggunakan daya mesin penggerak 6,5 HP. Percobaan dilakukan dengan 10 kg buah kopi kering setiap 1 kali percobaan. Hasil penelitian menunjukkan bahwa jumlah mata silinder yang terbaik pada alat  pengupas kulit biji kopi kering adalah 3 mata silinder. Namun pada kapasitas produksi pengupasan tertinggi didapat pada 7 mata silinder, akan tetapi persentase kualitas pengupasan pada 7 mata silinder sangat rendah sehingga banyak biji kopi yang cacat atau pecah.Kata kunci: Mesin pengupas, mata silinder, kopi, kualitas, dan kapasitas
Analisis Penyebab dan Perbaikan Vibrasi Pada Fin Fan Blower F1-Ek-9-D1 Milik PT. Badak LNG Bontang Yano Hurung Anoi; Ahmad Yani; Bayu Asmoro Seto
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 1 (2019): Juni 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (615.099 KB) | DOI: 10.24127/trb.v8i1.920

Abstract

Fin Fan Cooler merupakan salah satu komponen utama dalam Unit Purifikasi karena fungsinya untuk mendinginkan lean amine sebelum diumpankan menuju menara absorber. Fin Fan Cooler selalu dipantau secara rutin, apabila terjadi kelainan atau kerusakan harus segera diperbaiki secepat mungkin. Parameter seperti getaran, temperatur, dan tekanan harus terus diperhatikan karena dari parameter tersebut dapat mempresentasikan kinerja Fin Fan Cooler. Fin Fan Blower merupakan salah satu komponen utama pada Fin Fan Cooler. Identifikasi permasalahan pada Fin Fan Blower harus dilakukan dengan cepat dan tepat agar perbaikan dapat segera dilaksanakan. Jika ada Fin Fan Blower yang mengalami masalah, maka akan mempengaruhi kerja Fin Fan Cooler dan mengakibatkan turunnya kualitas produksi dan perusahaan akan mengalami kerugian. Metode yang digunakan pada penelitian ini yaitu penelitian lapangan. Hasil analisa data vibrasi dari penyebab vibrasi pada fin fan blower  F1-EK-9D1 PT. Badak LNG Bontang, maka dapat disimpulkan bahwa terdapat keadaan abnormal pada bagian pulley dan belt yang mengakibatkan misalignment sehingga terjadinya vibrasi yang tinggi dan setelah dilakukan predictive maintenance fin fan blower terjadi penurunan fibrasi 70% dari sebelum dilakukan predictive maintenance atau pengecekan vibrasi peralatan secara berkala.Kata Kunci: Analisis, vibrasi, fin fan blower  F1-EK-9D1
Uji daya mesin diesel dengan hot EGR menggunakan bahan bakar campuran biosolar, metanol kadar rendah, dan jatropha Yafid Effendi; Syaiful Syaiful
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (928.902 KB) | DOI: 10.24127/trb.v8i2.1030

Abstract

Motorized vehicles that are very suitable for transportation and heavy equipment vehicles are diesel engines, because their high combustion efficiency, reliability, fuel flexibility, and low fuel consumption make diesel widely used in several countries. The purpose of this study was to determine the effect of using a mixture of biosolar fuels, low levels of methanol and jatropha on power in a diesel engine using the hot Exhaust Gas Recirculation (EGR) system. This study uses an experimental method, using a 4JB1 diesel engine, the percentage of biodiesel fuel mixture, low levels of methanol and jatropha, Low Purity Methanol has a moisture content of 24.88%. The ratio of biosolar mixture, methanol and jatropha used are D85LPM5J10, D80LPM10J10, D75LPM15J10, D75LPM5J20, D70LPM10J20, D65LPM15J20, D65LPM5J30, D60LPM10J30 and D55LPM15J30. EGR openings vary from 0%, 25%, 50%, 75% and 100%. The test is carried out at a constant speed of 2000 rpm and is given a load of 25%, 50%, 75% and 100%. This study uses a dynamite brand Land & Sea dynamite. The results of this study are the use of EGR resulted in increasing the value of brake power. The effect of the fuel mixture causes the value of brake power tends to fall compared to D100. When using D85LPM5J10, D80LPM10J10, D70LPM10J20 and D55LPM15J30 at low loads (25%) there is an increase in power by 12.03%, 7.50%, 5.01%, and 5.97%. Keywords: Power, Engine, Diesel, LPM, Jatropha, EGR.
Kajian Eksperimen Instalasi Pompa Seri dan Paralel Terhadap Efisiensi Penggunaan Energi Iman Syahrizal; Daud Perdana
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (663.995 KB) | DOI: 10.24127/trb.v8i2.1056

Abstract

The pump is used to transfer liquid fluid from a low place to a high place or from one place to another with a certain distance and with a certain height. This study aims to figure the connection of series and parallel pumps to the discharge, pressure and pump power, and to figure the efficiency of series and parallel pumps with energy use. This study was conducted in a mechanical engineering major at Sambas State Polytechnic. The method used was three treatment experiments, including installing a single pump, a series pump installation, and a parallel pump installation. Observed changes are flow rate, water pressure, motor rotation, and electric current. The results showed that the series pump did not affect the discharge, but it affected the pressure and hydraulic power of the pump. While the parallel pump affects the increase in discharge but does not affect the pump pressure and hydraulic power. The results of pump calculations flow rate series 0.000450 m3 / sec, while the parallel pump flow rate 0.000769 m3 / sec. The results of pump measurement pressure are 80 psi series, while the parallel pump pressure is 40 psi. The calculation result of the hydraulic pump is 248.28 Watt series, while the parallel pump hydraulic power is 198.2 Watt.  The power efficiency of series pumps is higher than the efficiency of parallel pumps. The efficiency of electric power when measuring flow rate at 70.53% series pump installations, parallel pump electrical power efficiency of 56.3%. The efficiency of electric power when measuring series water pressure is 45.14%, while the parallel pump's electrical power efficiency is 36.03%. Keywords: Efficiency, pump installation, series, parallel.
Metode optimasi pada interkoneksi sistem suplai uap untuk kehandalan dan ekonomi pada sea water desalination Angga Ridwan Pratama; Muhammad Agus Sahbana; Nova Risdiyanto Ismail
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (983.784 KB) | DOI: 10.24127/trb.v8i2.988

Abstract

Sea water desalination or desalination plant is an equipment that functions to change sea water into fresh water. Its reliability in supply water is important especially as raw material for the electricity generation process. Start-stop gas turbine operating mode as well as routine maintenance schedules or sudden damage in one of the desalination plant s cause a reduction in steam supply readiness. This research purposed to maintain the availability of supply steam desalination plant by using a method design interconnection line which is analyzed in terms of pressure drop and flow in theoretical calculations. This research resulted is design the interconnection line supply steam of the desalination plant by removing and modifying the position of the check valve dividing between desalination plant 1, 2 and 3. The analysis of the supply steam interconnection design in terms of pressure and flow desalination plant is still in accordance with the reference manual book. The operational cost of the desalination plant is more economical using supply steam from Block 1 Low-Pressure Auxiliary with a profit of 154.01% or 82,318,148 rupiahs per day. Keywords: Sea water desalination, interconnection line, pressure drop, flow, operational cost.
Proses elektroplating nikel dengan variasi jarak anoda katoda dan tegangan listrik pada baja ST-41 Billy Permadi; Asroni Asroni; Eko Budiyanto
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (273.959 KB) | DOI: 10.24127/trb.v8i2.1080

Abstract

Electroplating process is a coating process where the deposition of a thin metal coating occurs on a coated surface using direct current and constant voltage. The process of finishing metal products uses Nickel as a coating that serves to improve the properties of the metal so that it resists corrosion and attach importance to the appearance of the metal surface. The metal coating process is carried out by electroplating technique with Nickel which occurs as an anode, and electrolyte uses in this process contained Nickel Sulphate. This study aims to determine the effect of distance variations and electrical pressure on layer thickness and adhesive strength. Anode Material coated with ST-41 Steel Plate with dimensions of 70 x 25 x 20 mm. While the cathode uses nickel (Ni) with dimensions of 10 x 20 x 20 mm. Cathode distance variations with anodes 5, 10, and 15 cm and electrical voltage variations of 3.5 Volts, 5 Volts, and 7.5 Volts. Bath time of 40 minutes and adhesion testing using the Posi Test AT-M Adhesion Tester. The results obtained from this study are the distance of the cathode with the best anode found at a distance of 5 cm and a voltage of 7.5 volts with a thickness of 0.0160 mm. Then the best voltage is at 7.5 Volts with a sticky strength value of> 21.53 MPa.Keywords: Electroplating, Nickel, Anode, Cathode, ST-41 Steel.
Perbandingan trajectory tracking pada prototype excavator sistem pneumatic dengan sistem kontrol menggunakan joystick dan smartphone android Randis Randis; Angga Wahyu Aditya
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (639.247 KB) | DOI: 10.24127/trb.v8i2.1031

Abstract

Trajectory tracking testing is mostly implemented both on vehicles, mobile robots, flying robots, and excavators to generate a small value of trajectory tracking to effectiveness and efficiency by the tasks and functions of each unit or product. This study aims to compare trajectory tracking on pneumatic excavator units with a manual control system with a joystick and a remote control system using an Android smartphone. Two tracks are used where the first track uses combine straight and radius shapes and the second track combines horizontal and vertical lines that form an angle of 90º. The results showed the use of remote control using an Android smartphone still has a higher trajectory tracking error when compared to manual control with a joystick even though on average the error results obtained are small, so more remote control is needed. Keywords: Pneumatic excavator system, joystick control system, remote control system, error trajectory tracking.
Kekasaran permukaan pada pemesinan frais mikro Ti 6Al- 4V ELI (extra low intertitial) Gusri Akhyar Ibrahim; Endra Saputra; Suryadiwansa Harun; Eko Agus Supriyanto; Armulani Patihawa
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (483.728 KB) | DOI: 10.24127/trb.v8i2.1057

Abstract

One of the ingredients that are popular now is titanium, but titanium is a material that is difficult to process using conventional milling machining because of the poor thermal conductivity of the material so that the high-temperature machining process produced in the cutting zone causes plastic deformation in cutting tools and increased chemical reactivity in titanium. High-speed micro-milling machining can be used for micro machining of hard metals or alloys that are difficult to achieve at low speeds. Micro milling machining in titanium material 6Al-4V ELI with variations in milling tool diameter 1 and 2 mm, spindle speed 10.000 and 15.000 rpm, feed 0,001 and 0,005 mm/rev, depth of cut 100 and 150 μm, which then do data processing using the method taguchi full factorial and theoretical analysis. The results showed that the diameter of the tool and into the depth of cut the most effect on surface roughness, the greater the tool diameter of the milling produced a smaller roughness value, this is inversely proportional to the depth of the cut. The lowest roughness value is 0,26 and the highest roughness value is 0,9. Keywords: Micro milling machining, titanium 6Al-4V ELI, surface roughness.

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