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All Journal Media Mesin: Majalah Teknik Mesin Journal of Science and Applicative Technology JURNAL CRANKSHAFT Jurnal Foundry
Abdul Muhyi
Department Of Mechanical Engineering Institut Teknologi Sumatera
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Energy Engineering Materials Science & Nanotechnology Mechanical Engineering

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Journal : Journal of Science and Applicative Technology

 1 
Uji Performa Gasoline Engine menggunakan bioaditif cengkeh dengan bensin berkadar oktan 90 Devia Gahana Cindi Alfian; Rico Aditia Prahmana; Dicky J. Silitonga; Abdul Muhyi; Didik Supriyadi
Journal of Science and Applicative Technology Vol 4 No 1 (2020): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (542.971 KB) | DOI: 10.35472/jsat.v4i1.243

Abstract

Globally, the demand for fuels is ever-increasing and so is the demand for fuel additives. A fuel additive is a substance added in small quantities to increase the performance of the engine, decrease fuel consumption and reduce emission. The fuel additives have no specific set of raw materials or ingredients. Every fuel additive is different from the other in many ways of raw materials and ingredients to produce these additives. In many cases, fuel additives have made by chemical materials as additives for a gasoline engine. However, the optimal parameters for the reduction of fuel consumption are not clear. Accordingly, the present study performs a mixing additive material in the form of clove oil with pure gasoline fuel with a percentage of 1%, 0,6% and 0,3% from a total volume of gasoline to be tested. Then the mixing of the additive and gasoline is tested into the gasoline engine by varying the load using 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800 and 2000 Watt power with a fixed engine rotation of 2500 rpm. The results show that the reduction of fuel consumption respectively. Results showed that the addition of 1%, 0.6% and 0.3% clove oil into a 90 octane gasoline reduced fuel consumption by 10.6%, 18.2% and 15.4% respectively. Maximum reduction of fuel consumption was 28.6% at 800 W electrical load with 0.6% of clove oil additive.
Optimasi Multi Respon pada Proses End-Milling Glass Fiber Reinforced Polymer (GFRP) Dengan Menggunakan Metode Back Propagation Neural Network – Particle Swarm Optimization (BPNN-PSO) Fajar Perdana Nurullah; Abdul Muhyi; Devia Gahana Cindi Alfian
Journal of Science and Applicative Technology Vol 5 No 2 (2021): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v5i2.447

Abstract

The use of composite materials continues to show an increasing trend in various fields such as sports, aviation and the military. This also increases the need for knowledge about the manufacturing process of composites. One of the most widely used composite materials is glass fiber reinforced polymer (GFRP). In the process of making components made from GFRP, one of the processes that is often used is end-milling. The studies that have been carried out on the GFRP end-milling process mostly use woven fibers, while research on machining of GFRP using combo fibers has not been widely conducted. This research was conducted to determine the effect of spindle speed, feeding speed, and cutting depth, on cutting forces, surface roughness, and delamination. In addition, multi response optimization is carried out using the combined method of BPNN-PSO to obtain the most optimal combination of machining parameters. The results shows that the optimal level of cut depth, spindle speed, and feeding speed are 1 mm, 4871 rpm and 788 mm / minute, respectively.
Pengaruh Komposisi Campuran Minyak Sereh Wangi dan Minyak Cengkeh terhadap Unjuk Kerja Mesin Diesel Rico Aditia Prahmana; Devia Gahana Cindi Alfian; Didik Supriyadi; Dicky Januarizky Silitonga; Abdul Muhyi
Journal of Science and Applicative Technology Vol 4 No 2 (2020): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v4i2.244

Abstract

The increase in fuel prices makes the use of essential oils as a natural bio-additive in diesel engines much in demand. This is because essential oils are believed to have good content to improve engine performance and reduce fuel consumption. In this research, essential oils used are citronella oil because they contain carboxylic compounds (-COOH) and clove oil which has the advantage to prevent corrosion. The aim is to improve engine performance and reduce fuel consumption can also prevent corrosion. This research was conducted by mixing citronella oil and clove oil with diesel fuel with a percentage of 1%, 0.5%, and 0.1% of the total volume. The diesel engine is operated with a loading variation of 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, and 2000 W at a constant engine speed of 1500 rpm. The variables measured and calculated in this experiment are power, torque, Brake Mean Effective Pressure (BMEP), Specific Fuel Consumption (SFC). The results showed that the addition of citronella oil and clove oil to diesel fuel with a percentage of 0.1%, 0.5%, and 1% significantly reduced fuel consumption by 14.6%, 12.9%, and 18.3%, respectively. The maximum fuel reduction from mixed oils is only 0.086 liters/hour at 1000W loads with 1% bio-additives content.
Desain Turbin Angin Horisontal untuk Area Kecepatan Angin Rendah dengan Airfoil S826 Setiadi Wira Buana; Putty Yunesti; Guna Bangun Persada; Abdul Muhyi
Journal of Science and Applicative Technology Vol 4 No 2 (2020): Journal of Science and Applicative Technology December Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v4i2.272

Abstract

This research aims to determine performance of turbine rotor performance with a single rotor blade model with a diameter of 0.6 m that has been developed by NORCOWE, while for turbine rotor blades used is the NREL S826 airfoil series. The wind turbines are operated at wind speed intervals of 1-5 m / s. This parameter will also present data in the form of the optimal point of wind turbine rotation and rotor rotation speed. The pitch angles used are 25 °, 30 °, and 35 °. The pitch angle that affects the value of the ideal rotational speed with the highest optimization for the horizontal airfoil turbine S826 is 30 ° with a wind speed of 5 m / s and a rotation of 570 RPM. This is because the greater the pitch angle of the installation, the easier it will be to experience speed trimming but is vulnerable to too large an angle of attack that causes a stall.
Aplikasi Penggunaan Serah Wangi Sebagai Bioaditif Alami untuk Karakterasi Unjuk Kerja dari Mesin Diesel Abdul Muhyi; Rico Aditia Prahmana; Devia G. C. Alfian; Dicky J. Silitonga; Didik Supriyadi
Journal of Science and Applicative Technology Vol 3 No 1 (2019): Journal of Science and Applicative Technology August Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1188.007 KB) | DOI: 10.35472/jsat.v3i1.194

Abstract

The consumption of diesel fuel in Indonesia is increasing every year, one way to overcome this problem is to use natural bioaditive in the form of essential oils found in Indonesia. Essential oils used in this study are fragrant lemongrass because fragrant lemongrass contains carboxylic compounds (-COOH) [1,2,3]. With the aim of improving engine performance and reducing fuel consumption. This research was conducted by mixing fragrant citronella oil with diesel oil with a percentage of 1%, 0.5% and 0.1% of the total volume. Diesel engines are operated with variations in loading 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800 and 2000 W at a constant engine speed of 1500 rpm. The variables measured and calculated in this experiment are power, torque, Break Mean Effective Pressure (BMEP), Specific Fuel Consumption (SFC). The results showed that adding citronella oil to diesel fuel with a percentage of 1%, 0.5% and 0.1% significantly reduced fuel consumption by 15.5%, 3.6% and 2.6% respectively. The maximum reduction in fuel consumption reaches 0.055 liters / hour at 200W loading with a bioaditive level of 0.1%. The next study planned is to mix clove oil and citronella oil as bioaditive so that it is expected to reduce fuel consumption and engine corrosion. Keywords: Diesel engine, bioaditive, fragrant citronella oil, performance of diesel engines, fuel consumption
Analisis Sifat Mekanik dari Struktur Seluler yang Difabrikasi dengan Printer 3D Abdul Muhyi; Riyan Ferdiyanto; Kardo Rajagukguk; Wahyu S. Sipahutar; Muhamad Fatikul Arif
Journal of Science and Applicative Technology Vol 7 No 1 (2023): Journal of Science and Applicative Technology June Chapter
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LPPM), Institut Teknologi Sumatera, Lampung Selatan, Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35472/jsat.v7i1.370

Abstract

Struktur ringan berbentuk cellular (seluler) atau foam (busa) dalam beberapa tahun terakhir sangat banyak dikembangkan terutama karena perkembangan cepat dari Printer 3D, sehingga desain rumit dapat difabrikasi dengan mudah. Struktur seluler mempunyai rasio kekuatan terhadap massa dan kekakuan yang tinggi, serta dapat diaplikasikan pada struktur ringan dengan ketahanan impak yang tinggi. Dalam tulisan ini, dilakukan uji tekan terhadap enam jenis struktur seluler dengan fraksi volume 10%. Jenis struktur seluler yang divariasikan adalah Cubic, Gyroid, Honeycomb 3D, Rectilinear, Honeycomb, dan Rectilinear 45o. Hasil yang didapat menunjukkan bahwa struktur kompleks jenis Cubic mempunyai kekuatan maksimal terbaik dan juga mempunyai penyerapan energi yang terbaik berdasarkan pengujian yang dilakukan, diikuti dengan struktur Gyroid dan Honeycomb 3D. Struktur yang mempunyai topologi dua dimensi yaitu, Rectilinear 0o, Rectilinear 45o, dan Honeycomb tidak mempunyai kekuatan dan karakteristik penyerapan energi yang baik. Hasil ini dapat digunakan sebagai panduan desain struktur ringan yang mempunyai karakteristik kekuatan dan penyerapan energi mekanik yang tinggi.
Co-Authors Abdul Aziz Ahmad Waldi Chaniago Anas Maulana Buana, Setiadi Wira Devia Gahana Cindi Alfian Dicky J. Silitonga Didik Supriyadi Fajar Paundra Fajar Paundra Fajar Perdana Nurrullah Fajar Perdana Nurullah Febryan Utama Putra Fuad Hakim Guna Bangun Persada Indriyani Indriyani Kardo Rajagukguk, Kardo Khairul Imad Lukman Triawan Muhamad Fatikul Arif Nurdin, Akhmad Opi Sumardi Putty Yunesti Rico Aditia Prahmana Riyan Ferdiyanto Setiyo Rojikin Sipahutar, Wahyu Solafide