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All Journal Jurnal Teknik Mesin Jurnal METTEK (Jurnal Ilmiah Nasional Dalam Bidang Ilmu Teknik Mesin) Jurnal Energi dan Teknologi Manufaktur Jurnal Teknik Mesin
Sufiyanto, Sufiyanto
Sekolah Tinggi Teknologi Nasional Jambi
Automotive Engineering Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Modifikasi Alternator dan Sistem Kelistrikan Untuk Peningkatan Daya Listrik Sepeda Motor 125 cc Alfi Tranggono Agus Salim; Eko Darmawan; Yoga Ahdiat Fakhrudi; Izhary Siregar; Balkhaya Balkhaya; Muhammad Anhar Pulungan; Sufiyanto Sufiyanto; Thenny Daus Salamoni
Jurnal Energi dan Teknologi Manufaktur Vol 2 No 02 (2019)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v2i02.46

Abstract

The alternator on the motor is one component of the vehicle that can be used to improve its utilization. Modifications to the alternator on the vehicle are made to increase electric power. The working principle of an electric generator is in accordance with the law of faraday if a conductor is rotated in a magnetic field until it crosses the magnetic force line (GGM), it will cause an electric force line (GGL) in volts at the end of the conductor. In the alternator to be used, the lighting coil resistance is 0.24 - 0.36 Ω and the charging is 12.3 - 13.3 V at 1500 rpm. The research conducted was an experiment by comparing the alternator output voltage before it was modified with the alternator output that had been modified. Modification of the alternator is done by the method of load variation and replacement of the diameter of the coil along with the number of turns on the alternator. Measurement of alternator before and after modification shows results that are directly proportional to the output of the alternator at 1,000 rpm - 8,000 rpm. The results of three tests can be concluded that the modification of the alternator has increased from 6.42 A for the standard alternator to 13.7 A for the modification alternator.
Optimization of Injection molding Parameters using the Taguchi Method to Maximize Biocomposite Material Tensile Strength Sufiyanto Sufiyanto
Jurnal Teknik Mesin (JTM) Vol 7, No 2 (2017)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (824.047 KB)

Abstract

This research explained a study for optimization of parameters process on the injection molding biocomposite material, which is a mixture of plastics and natural fibers. Natural fibers used is rice husk (RH) mixed with polypropylene (PP) and maleic anhydride polypropylene (MAPP). The biocomposite molded into tensile specimens ASTM D638-03 using the injection molding machine. The varied of injection molding is the parameters process, that are divided into 4 parameters and each consists of 3 levels, then be done tensile tests on specimens. Optimization performed using the Taguchi method with orthogonal matrix design L27(313). The maximum tensile strength of biocomposite were barrel temperature of 210°C, injection pressure of 55 bar, holding pressure of 40 bar, and injection velocity of 75 mm/sec
Kaji Eksperimental Perbandingan Performa Engine4 Langkah MenggunakanBahan Bakar Hasil Pirolisis Sampah Plastik dan Premium Marfizal Marfizal; Sufiyanto Sufiyanto; Adriyan Adriyan
Jurnal Mettek: Jurnal Ilmiah Nasional dalam Bidang Ilmu Teknik Mesin Vol 6 No 2 (2020)
Publisher : Program Studi Magister Teknik Mesin Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/METTEK.2020.v06.i02.p01

Abstract

Penelitian yang dilakukan dalam tulisan ini terkait pengujian performa engine 4 langkah menggunakan bahan bakar hasil pirolisis sampah plastik (BBHPSP) dan dibandingkan dengan bahan bakar standar, yaitu premium. Pengujian dilakukan dengan menggunakan parameter tetap berupa volume bahan bakar (20 cc) dan kecepatan engine pada 4500 rpm yang dijaga konstan. Untuk memetakan performa engine 4 langkah menggunakan kedua jenis bahan bakar divariasikan besar pembebanan di poros keluaran engine. Berdasarkan pengukuran yang dilakukan diperoleh temperatur ruang bakar dan temperatur gas buang di exhaust manifoldmenggunakantermokopel. Hasil ini digunakan untuk menghitung performa engine 4 langkah yang menunjukkan bahwa performa engine 4 langkah dengan BBHPSP masih berada di bawah performa engine dengan premium. Pada penelitian ini diketahui bahwa kerja keluaran, indicated horse power (IHP), dan efisiensi termal engine dengan BBHPSP lebih rendah masing-masingnya dalam rentang 8,0 – 11,7%; 20,8 – 32,1%; dan 9,6 – 17,7% terhadap nilai premium. Akan tetapi, konsumsi bahan bakar spesifiknya lebih tinggi dibandingkan dengan premium yaitu sebesar32,4 – 53,1%. Selanjutnya, hubungan antara konsumsi bahan bakar spesifik dengan kerja keluaran, IHP, dan efisiensi termal memenuhi fungsi kudratik.Secara umum dapat disimpulkan bahwa BBHPSP dapat digunakan sebagai bahan bakar alternatif dengan perlunya proses perlakuan setelah pirolisis selesai dilakukan atau penambahan katalis dalam proses. This research was conducted to determine performance measurement of a four-stroke engine using fuel from pyrolisis procsess of plastic waste (BBHPSP) and gasoline as a standard fuel. The measurements were performed by keeping the fuel volume and engine rotation at constant value at 20 cc and 4500 rpm, respectively. To map the performance of four-stroke engine, it can be achieved by varying the magnitude of load at the output shaft. Temperature was also measured using thermocouple at combustion chamber and exhaust manifold. These measurements were applied to determine the performance of four-stroke engine. It gave the value of four-stroke engine using BBHPSP was lower than the use of gasoline. These values were 8,0 – 11,7%foroutput work, 20,8 – 32,1% for indicated horse power (IHP), and 9,6 – 17,7% for thermal efficiency comparing to the use of gasoline. Meanwhile, the specific fuel consumption of BBHPSP was greater than gasoline about 32,4 – 53,1%. Afterwards, the relation of specific fuel conumption with output works, IHP and thermal efficiency fulfilled the quadratic functions. To conclude, BBHPSP can be used as an alternative fuel for the four-stroke engine by considering a post-treatment or adding a catalyst when producing BBHPSP using pyrolisis proccess.
The Application of Rapid Upper Limb Assessment (RULA) for Designing a Lab-scale Flexible Conveyor Basirun Chaniago; Sufiyanto Sufiyanto; Lilia Trisyathia Quentara
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2021.v11.i1.86-94

Abstract

The limited area of laboratory space (3000 x 3000 mm) triggered the importance of designing a flexible conveyor to support practicum activities. The process design of flexible conveyor consist of 1) Planning and preparation of product specifications; collection of product ideas based on needs and material selection. 2) Designing concepts; product dimensions with anthropometric data approach eg. elbow height, forward knee height and hand grip distance. 3) Product design; schemes or sketches that are developed into products or technical objects. 4) Pictures and specifications of product manufacture; complete review of all product elements with geometry, dimensions and material. The Rapid Upper Limb Assessment (RULA) method is used to analyze product function by investigating disorders of the upper limbs consisting of group A; upper arm, forearm, wrist, and wrist rotation, then group B; neck, torso, and feet, which are measured by the degree of injury risk. From the anthropometry approach a flexible conveyor specification was obtained with a length of 2000 mm, a width of 610 mm, a minimum height of 544 mm, and a maximum height of 957 mm. The results of the final score assessment of the standing posture and sitting position that the RULA action category is 4, with a small level of risk and for action to take some time to come.
Co-Authors Adriyan, Adriyan Alfi Tranggono Agus Salim Balkhaya, Balkhaya Basirun Chaniago Eko Darmawan Izhary Siregar Lilia Trisyathia Quentara Marfizal Marfizal Muhammad Anhar Pulungan Thenny Daus Salamoni Yoga Ahdiat Fakhrudi