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Pengaruh perubahan sudut camshaft terhadap performa mesin sepeda motor sebagai upaya efisiensi energi Lukito Dwi Yuono; Eko Budiyanto
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

The role of the camshaft (noken as) is very important, including determining the time to open the valve, regulating the length of the valve opening duration, determining the overlap inlet and exhaust valve duration, as well as being a major component of the engine's working system. Modification of the camshaft angle is expected to be able to increase the efficiency of the combustion of fuel entering the combustion chamber and increase compression pressure in the combustion chamber so that it can improve volume quality of fuel entering the combustion chamber and can provide greater power to the engine rotation when in use. The purpose of this study was to determine the effect of camshaft angle changes on motorcycle engine performance and determine the effect of the camshaft duration on fuel consumption. The method that will be used in this research is to provide variations in angular changes on the camshaft of 20, 40, 60.Then test the dyno test on each variable. The result, the highest torque is the camshaft 40 variation with a value of 8.25 Nm. The highest power is in variation 40 with the highest number of 8.76 PS. Acceleration with the fastest time is obtained in camshaft 40 variations with a time of 14.2 seconds at a speed of 100 km/h. As well as the most efficient fuel consumption is at variation 20 with 150 ml fuel consumption.Keywords: Angle, camshaft, and engine performance.

PERANAN AERASI SEL ELEKTROLISIS DALAM PEMBENTUKAN PORI PADA PROSES ANODIZING LOGAM ALUMINIUM Eko Budiyanto; Lukito Dwi Yuono
TURBO [Tulisan Riset Berbasis Online] Vol 7, No 2 (2018): Desember 2018
Publisher : Universitas Muhammadiyah Metro

Penelitian ini bertujuan untuk mengetahui peranan aerasi sel elektrolisis dalam pembentukan pori pada lapisan proses anodizing logam Aluminium. Selain Beda potensial, Pembentukan lapisan oksida pada permukaan Aluminium juga dipengaruhi oleh jumlah oksigen yang terdapat pada larutan elektrolit. Pengaliran udara (aerasi) pada proses ini diharapkan akan menyuplai sejumlah oksigen pada sel elektrolisis sehingga larutan elektrolit tidak mengalami defisit oksigen. Tujuan lain penambahan aliran udara pada proses ini adalah untuk menciptakan rongga pori pada oksida Aluminium yang dibentuk. Kualitas produk hasil anodizing ditentukan oleh ketebalan pori yang terbentuk serta jarak antar pori. Untuk keperluan yang membutuhkan material bersifat dekoratif, jarak antar pori yang terbentuk haruslah saling berdekatan untuk menghindari pewarnaan yang kurang merata. Material yang digunakan dalam penelitian ini adalah Aluminium paduan Mangan dan Silikon (Al-Mg-Si). Ukuran spesimen anodizing Aluminium adalah 60 x 15 x 3 (mm). Tahap preparasi Aluminium dilakukan pembersihan secara fisik dan kimiawi, spesimen dicuci menggunakan alkohol dan aquadest yang selanjutnya dilakukan perendaman pada larutan Natrium Hidroksida (NaOH) selama 2 menit. Proses anodizing Aluminium menggunakan asam sulfat (H2SO4) sebagai elektrolit dengan beda potensial 25 V selama 3 menit dan variasi aerasi 5, 10, dan 15 lpm. Jarak antar sel elektrolisis diatur sejauh 20 cm. Hasil dari proses anodizing , material diuji dan dianalisa karakteristik permukaannya menggunakan uji Scanning Electron Microscopy (SEM). Hasil yang diperoleh adalah debit aerasi pada proses anodizing memberikan pengaruh yang signifikan terhadap nilai degradasi material Aluminium. Pada debit aerasi masing-masing 10 lpm, 15 lpm, dan 20 lpm diperoleh nilai degradasi sebesar 0.0009 gr (0.0123 %), 0.0095 gr (0.1319 %), 0.041 gr (0.5621 %). Sedangkan karakteristik permukaan, bentuk, dan jarak antar pori dapat dipresentasikan dalam gambar hasil pengamatan SEM. Kata Kunci : Aluminium, anodizing , aerasi, SEM, pori.

Pengaruh penambahan Silikon pada remelting piston motor bekas menggunakan tungku induksi terhadap kekuatan tarik dan kekerasan Eko Nugroho; Eko Budiyanto; Aji Dawam Firdaus
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1823

Aluminum is one of the most widely used non-ferrous metals in industry and engineering because of its light weight and resistance to corrosion. The purpose of this study is to change the waste of used motor pistons using an induction furnace by recycling or remelting the material and adding a mixture of silicon with variations of 8%, 10% and 12% to improve its mechanical properties. In this research, I used the main furnace for the smelting. The results of this study in the tensile test showed that the strength and wear strength increased with the addition of silicon elements but became brittle and stiff this happened because the value of the elastic modulus decreased with the addition of silkon elements, namely at 12% at 1.06 N/mm² and at a variation of 8 % of 1.13 N/mm². In the hardness test, it was found that the addition of silicon to aluminum with variations of 8%, 10% and 12% increased the hardness of the material.

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

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

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

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.

Uji ketahanan fatik aluminium scrap hasil remelting piston bekas menggunakan alat uji fatik tipe rotary bending Eko Budiyanto; Eko Nugroho; Agus Zainudin
TURBO [Tulisan Riset Berbasis Online] Vol 7, No 1 (2018): Juni 2018
Publisher : Universitas Muhammadiyah Metro

Aluminium merupakan salah satu logam non-ferrous yang paling banyak dipergunakan dalam bidang keteknikan karena memiliki sifat yang ringan, tahan terhadap korosi, dan dapat didaur ulang. Daur ulang adalah proses untuk menjadikan suatu bahan bekas menjadikan suatu bahan bekas menjadi suatu yang berguna. Dalam penelitian ini dilakukan daur ulang dengan metode remelting aluminium piston bekas dengan harapan nantinya bahan piston bekas dapat dipergunakan kembali. Tujuan penelitian ini adalah untuk mengetahai nilai kelelahan fatik aluminium hasil remelting piston bekas pada variasi beban yang berbeda. Metode penelitian memvariasikan beban 40%, 50%, dan 60% dari Yield Strength untuk menghasilkan nilai kelelahan. Nilai uji fatik dari pembebanan 40% Yield Strength diberi beban 1,2 kg mendapatkan nilai siklus putaran 171.026 dan waktu patah 01:34:01 detik. Pada pembebanan 50% Yield Strength diberi beban 1,5 kg mendapatkan nilai siklus putaran 56.796 dengan waktu patah 00:37:52 detik. Pada pembebanan 60% Yield Strength diberi beban 1,8 kg mendapatkan nilai siklus putaran 24.384 dan waktu patah 00:16:15 detik. Semakin besar beban yang diberikan semakin kecil siklus dan waktu yang dihasilkan, sebaliknya semakin kecil beban yang diberikan semakin besar siklus dan waktu yang dihasilkan.Kata kunci : Aluminium scrap, Piston bekas, Remelting, Uji fatik, Rotary bending.

Pengaruh temperatur elektrolit terhadap ketebalan dan kuat lekat baja karbon rendah pada proses elektroplating Asroni Asroni; Eko Budiyanto; Tri Cahyo Wahyudi; I Wayan Suarca
TURBO [Tulisan Riset Berbasis Online] Vol 10, No 2 (2021): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v10i2.1755

The development of industry as well as science and technology requires humans to fulfill various kinds of needs in their lives. One of them is the need for metal-based goods. Many objects around us, both in the automotive industry and in the steel-based industry for household purposes, etc., are given a metallic finish to protect and beautify the metal. The metal coating technique that is often used in the metal industry is electroplating. Electroplating comes from two words, namely electro and plating or electricity and coating that uses a deposition system. The purpose of this study was to determine the effect of electrolyte temperature on the thickness and adhesive strength of low carbon steel in the electroplating process. The cathode used is low carbon steel with dimensions of 70 mm x 25 mm x 20 mm, while the anode used is Nickel (Ni) and the bath for plating is 60 cm long, 30 cm depth, and 30 cm wide. Two anodes on the right and left side of the anode with an anode-cathode distance of 10 cm, and using an electric voltage of 7.5 Volts, and using variations in electrolyte temperature of 450C, 500C, 550C, 600C, 650C and room temperature. From the results of the study found the optimal thickness value with 0.021 mm at a temperature of 600C. Meanwhile, the optimal value for coating adhesive strength from electroplating research is 60℃ with a very high adhesive strength value of 26.53 MPa.

Uji ketahanan fatik aluminium hasil remelting piston bekas menggunakan metode pengecoran centrifugal casting Eko Nugroho; Eko Budiyanto; Rubi Kurniawan; Joko Sumosusilo
TURBO [Tulisan Riset Berbasis Online] Vol 8, No 2 (2019): Jurnal Turbo Desember 2019
Publisher : Universitas Muhammadiyah Metro

Aluminum is one of the non-ferrous metals that are most widely used in the engineering field due to it has mild properties and is resistant to corrosion, but aluminum waste such as used pistons that are damaged or not utilized as an proper resource, on the other hand, that this process is very potential due to it uses a used piston that is not used, and is expected to have a better economic value by doing remelting and centrifugal casting to the used piston. This study aims to determine the value of the fatigue cycle of the used piston which is remelting and printed using the centrifugal casting method by using variations in the pouring temperature and die temperature and rotation variations. Based on the tests conducted using pouring temperature variations and rotation speed are as follows: best cycle value at 250 rpm variation is at pouring temperature 600oC with a value of 76000 N, and the lowest is at room temperature of 750oC with a value of 32000 N, best cycle at a variation of 500 rpm is at a pouring temperature of 700oC with a value of 40000 N, and the lowest is at a room temperature of 660oC with a value of 12000 N. The best cycle value at a variation of 750 rpm is at a pouring temperature of 750oC with a value of 16000 N, and the lowest is at room temperature 660oC with a value of 10000 N. While the results of subsequent tests conducted using variations in die temperature and rotation speed are as follows: the best cycle value at 250 rpm variation is at a print temperature of 350oC with a value of 17400 N, and the lowest is at room temperature of 250oC with a value of 8370 N. The best cycle value at a variation of 500 rpm is at a print temperature of 350oC with a value of 67760 N, and the lowest is at a room temperature of 250oC with a value of 22850 N. The best cycle value at a variation of 750 rpm is at a print temperature of 350oC with a value of 75170oC. and the lowest is at room temperature of 250oC with a value of 28940 N.Keywords: Centrifugal casting, fatigue test, remelting, used piston, aluminum, cycle value.

Analisa proses produksi part number D574-50081-201 menggunakan mesin milling CNC di PT DI Eko Budiyanto; Lukito Dwi Yuono; Fatku Rohman
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 2 (2020): Jurnal Turbo Desember 2020
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v9i2.1427

The world of manufacturing technology is currently developing rapidly. Computerization carried out on manufacturing equipment makes it very easy for an industry, especially industries with a large production scale or mass production with a high number of orders in a short time. Manufacturing technology for machine tools usually uses a CNC (Computer Numeric Control) machine. Where the operation of this machine uses a program controlled by a computer and the programmer. This machine can produce products with high accuracy, even for very complicated manufacturing work. Product errors due to operator negligence can be reduced, as contact between the operator and the machine is minimal. However, if there is an error in the material or improper feed, the operator tends not to know because everything has been executed with the program that has been made. Observations were made at the 3 axis prismatic machine section, PT. Dirgantara Indonesia (DI). The milling machine used was the QUASER MV 185 type machine. Part material used in this study was Aluminum alloy 7010. The results of observations and calculations obtained that the average machining efficiency was 13%. Keywords: CNC, production process, efficiency.

Electrical Discharge Machine (EDM): evaluasi nilai kekasaran permukaan benda kerja pengaruh variasi kuat arus listrik dan kekerasan material Eko Budiyanto; Eko Nugroho; YGK Putra
TURBO [Tulisan Riset Berbasis Online] Vol 9, No 1 (2020): Jurnal TURBO
Publisher : Universitas Muhammadiyah Metro

Electrical Discharge Machine (EDM) is a manufacturing machine that can be used to make workpieces with complicated shapes that cannot be worked on conventional machines. The main process of EDM is to erode the workpiece in the plasma zone that is formed as a result of an electric current that flows and jumps of sparks that occur between the electrodes. Some factors that affect the success of the EDM process include the strong electric current and mechanical properties of the workpiece. The use of EDM in steel material for its processing includes various grades of hardness. This study aims to evaluate the value of the roughness of the workpiece EDM process results that are affected by strong electric current and material hardness. This study uses EDM King Spark ZNC ADM-PM Series and steel material as workpieces. The independent variables used in this study were 3 levels of current use namely 6 Amperes, 9 Amperes & 12 Amperes, and 3 levels of steel hardness namely 28.2 HRC, 31.7 HRC & 37.9 HRC with 18 specimens. Data retrieval is carried out in 3 stages, namely data retrieval of material hardness, retrieval of material composition test data, and retrieval of surface roughness test data. The results showed that the higher the current value and the hardness of the steel used will increase the value of surface roughness. The best surface roughness value of each specimen examined is specimen A with a steel hardness of 31.7 HRC and a current value of 6 Amperes resulting in surface roughness of 3.07 μm; in specimen B with a steel hardness of 28.2 HRC and a current value of 6 Amperes resulting in a surface roughness value of 2.66 μm; and in specimen C with a steel hardness of 37.9 HRC and a current value of 9 Amperes resulting in a surface roughness value of 2.92 μm.Keywords: EDM, electric current, violence, roughness, and steel.

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