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All Journal Jurnal Keteknikan Pertanian Sinergi AME (Aplikasi Mekanika dan Energi) : Jurnal Ilmiah Teknik Mesin
M.Sjahrul Annas
Department Of Mechanical Engineering, Universitas Trisakti
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Other

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PENGEMBANGAN BAK UJI UNTUK MEDIA PEMBELAJARAN DALAM PENGUKURAN TORSI RODA TRAKSI Lisyanto .; E. Namaken Sembiring; M.Sjahrul Annas
Jurnal Keteknikan Pertanian Vol. 20 No. 1 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.020.1.%p

Abstract

ABSTRACT Measurement of torque and performance of traction wheel is generally employed a device of big soil bin. The device however is not to be employed as a leaming media in the classroom scale. Development the model of soil bin to measure tourque and performance of traction wheel, wich can be used in the classroom, is necessary, in order to gain effective and simplicity for learning systtem. Development of the model can be designed by decreasing the dimension of the bin to be smaller, whereas the main component and the shape of the bin are remaining the same,and by the development are needed, i.e.: 1) type of contact surface made of sandy loam soil, rubber, and iron plate, 2) dynamic loade of wheel of 50 N, 100 N, and 150 N. Model of soil bin that will be developed will has a dimension of 1 m length, 0.4m widht, and 0.8 m height. The model suitable as a media of learning system in classroom scale for exploring the measurement method of torque and performance of traction wheel. The higher the dynamic wheel loads the more increasing the maximum torque. In results of the experiment, rubber give the more higher torque (0.53 N m) than torque resulted by soil (0.34 N m) and iron (0.21 N m). Keyword: soil bin, torque, traction, learning media system
DESIGN MODELING OF SAVONIUS-DARRIEUS TURBINE FOR SEA CURRENT ELECTRIC POWER PLANT Boris Metheny; Rosyida Permatasari; Muhammad Sjahrul Annas
SINERGI Vol 25, No 1 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2021.1.004

Abstract

Turbines convert the kinetic energy of ocean currents into electrical energy produced by the sea current electric power plant. This study aims to design a power generator turbine modeling that is carried out using the Computational Fluid Dynamic (CFD) approach by comparing the geometric performance based on the angle of attack and the Tip Speed Ratio (TSR) value of the Savonius-Darrieus Turbine. Having done several trials and errors during collecting the data, the value of the TSR 1.427; 2.853; 4.28; 5; and 5.7 is proposed. Here, the NACA 0018 series has been adopted on the current design of Savonius-Darrieus Turbine. The turbine has three blades, length of the span 357 mm, the diameter of turbine 428 mm, and length of the hydrofoil chord 40 mm. Effect of various angle of attacks from 0°up to 10° has been taken into account in the computational to obtain the coefficient power for each variation. The results revealed that the turbine with an angle of attack of 5°and TSR value of 5.0 has higher power coefficient value by 0.469 as compared with its angle of attack of 10°. It should be noted here that the increase of the angle of attack up to 10° resulted in a significant reduction of the power coefficient value of 0.206 as the value of TSR about 4.28. The addition of the Savonius Rotor results in increasing efficiency of the turbine for sea current applications.
Studi Friction Stir Welding (FSW) Pada Lembaran Al 5083 Dan Al 6061 Resdina Silalahi; Triyono; Dody Prayitno; Sjahrul Annas
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol. 9 No. 2 (2023)
Publisher : Universitas Ibn Khaldun Bogor

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Abstract

Friction Stir Welding (FSW) merupakan sebuah metode pengelasan gesek, yang tidak memerlukan bahan penambah atau pengisi pada prosesnya. Tujuan dari penelitian ini adalah untuk mengetahui kualitas sambungan las beda material dengan melakukan pengujian kekerasan dengan metode uji microvickers standar ASTM E384, dan uji tarik pada hasil pengelasan FSW. Material yang digunakan adalah lembaran aluminium paduan 5083 dan lembaran aluminium paduan 6061. Parameter yang digunakan adalah putaran spindel 1225 rpm, kecepatan pengelasan 25 mm/menit dan ukuran sampel yang akan disambung memiliki panjang 75 mm, lebar 50 mm, ketebalan 6 mm. Variable panjang pin adalah 3,5mm, 4mm, 4,5mm, dan 5mm. Hasil pengujian menunjukkan bahwa pada nilai panjang pin 3,5 mm didapatkan kekerasan pada lokasi Base 1, manik las (weld pool), HAZ 2 dan Base 2 memiliki kekerasan yang relatif sama. Kekerasan yang paling rendah berada pada HAZ 1. Dimana pada daerah HAZ 1 ini terjadi patah ketika sampel diuji tarik. Sedangkan pada nilai kedalaman pin 5,0 mm didapatkan kekerasan pada lokasi Base 1, manik las, HAZ 2 dan Base 2 memiliki kekerasan yang relatif sama. Panjang pin dari 3,5 mm ke 5,0 mm tidak mempengaruhi nilai kekerasan pada Base 1, manik las, HAZ 2 dan Base 2. Kata kunci: friction stir welding; lembaran aluminium; sifat mekanik; uji kekerasan mikro; uji tarik.
Co-Authors Boris Metheny Dody Prayitno E. Namaken Sembiring Lisyanto . Resdina Silalahi Rosyida Permatasari Triyono