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INDONESIA
STATOR: Jurnal Ilmiah Mahasiswa Teknik Mesin
Published by Universitas Jember
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Articles 4 Documents
 1 
Search results for , issue "Vol. 8 No. 1 (2025): JURNAL STATOR" : 4 Documents clear
Analisis Performa Mesin Pengayak Pasir Zeolit Jenis Rotary Dengan Variasi Sudut Kemiringan & Variasi Kecepatan Putaran Wildan, Muhammad; Hermawan, Yuni; Nashrullah, Muhammad Dimyati; Syuhri, Ahmad; Sidartawan, Robertus; Kristianta, FX
STATOR: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 1 (2025): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Pengayakan merupakan proses pengelompokan suatu butiran yang akan dipisahkan menjadisatu atau beberapa kelompok. Salah satu jenis pasir yang membutuhkan sebuah prosespengayakan ialah pasir zeolit. Mesin pengayak pasir dibagi beberapa type salah satunya yaitutype rotary atau berputar. Dalam penelitian ini, akan menciptakan performa terbaik mesinpengayak pasir zeolit type rotary dengan menentukan parameter variasi sudut kemiringan dankecepatan putaran yang tepat pada tabung pengayak. Variasi yang telah ditentukan akanberpengaruh terhadap lama waktu proses pengayakan dan hasil pengayakan pasir zeolit. MetodeTaguchi digunakan untuk mengoptimalkan variasi yang digunakan berupa matriks orthogonalL9 (32). Berdasarkan hasil penelitian ini sudut kemiringan dan kecepatan putaran berpengaruhsignifikan terhadap lama waktu proses pengayakan dan hasil pengayakan pasir zeolit dengannilai persen kontribusi sebesar 17,72% dan 45,18% terhadap lama waktu pengayakaan,sedangkan untuk hasil pengayakan dengan nilai kontribusi 39,33% dan 33,45%. Maka prosespengayakan pasir terbanyak didapat pada variasi sudut 10° dan 28 rpm menghasilkan hasilsaringan pasir halus zeolit 6,70 kg dengan waktu 256,6 sec dan hasil lama waktu pengayakantercepat didapat pada variasi sudut 20° dan 61 rpm menghasilkan waktu pengayakan 198,3 secdengan hasil berat pasir halus 2,67 kg. Sehingga hasil penelitian ini bisa sebagai alternatifpemilihan variasi parameter pada proses pengayakan pasir zeolit menggunakan mesin pengayaktype rotary.Kata Kunci: mesin pengayak, rotary, pasir zeolit, sudut, kecepatan
PENGARUH PARAMETER PEMESINAN BUBUT TERHADAP KEKASARAN PERMUKAAN PADA BAJA AISI 4340 Adha Mahendra, Erlian; Hermawan, Yuni; Triono, Agus; Rozy Hentihu, M. Fahrur; Sakura, Rahma Rei
STATOR: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 1 (2025): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

This research evaluates the influence of lathe machining parameters, such as spindle speed,cutting speed, and feed depth, on the surface roughness (Ra) on the wheel axle of an electric car madefrom AISI 4340 steel. Measurements were carried out using a TR220 surface roughness tester machine,which recorded the highest roughness of 10.107 μm and the lowest was 4.041 μm. The results showedthat feed speed contributed 51.24%, spindle speed 35.82%, and cutting depth 12.94% to surfaceroughness.The optimal combination of machining parameters to produce a surface with low roughness is aspindle speed of 770 m/min, a cutting depth of 0.5 mm, and a feed speed of 120 mm/s. Small infeed depths are ideal for producing smooth surfaces, but compromises may be necessary for production efficiency. In addition, high cutting speeds provide optimal results if heat and tool wear can be controlled. Optimizing these parameters is critical to improving product quality, performance and lifetime.Keywords: Surface Roughness, AISI 4340 Steel, Lathe Machining
ANALISIS HAMBATAN PENAMBAHAN STERN FLAP PADA KAPAL PATROLI PENGAWAS PERIKANAN MENGGUNAKAN COMPUTATIONAL FLUID DYNAMIC Aziz, Abdul; Indria Dwi Puspita, Hery; Sakinah, Wazirotus; ., Sumarji; Sutjahjono, Hary; Setiawan, Digdo Listyadi
STATOR: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 1 (2025): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

This study aims to analyze the addition of Stern flap to the performance of fisheries surveillance patrol vessels using Computional Fluid Dynamics (CFD). Stern flap is an additional component on the hull installed at the stern of the ship and serves to reduce the resistance that occurs on the ship. The design or simulation used to compile this research is a literature study, with the Computational Fluid Dynamics method using ANSYS Workbench for Student 2023 R2 software simulation. This study discusses the analysis, simulation, and research results related to hydrostatic and aerodynamic resistance on patrol boat models with and without the use of stern flaps at speed variations from 10 knots to 25 knots. The results show that the use of stern flaps increases hydrostatic resistance at low speeds, but can reduce aerodynamic resistance at high speeds. The comparison shows a significant increase in hydrostatic resistance at low speed with the highest value at 10 knots of 54%, while a decrease in aerodynamic resistance occurs at high speed, especially at 25 knots with a decrease of 23%. These results provide important insights in patrol boat design for performance optimization at various operational speeds.
PENGARUH PENGGUNAAN CAIRAN PENDINGIN (DEBIT 75 L/h) TERHADAP EFISIENSI PANEL SURYA MONOCRYSTALLINE 20 WP Hardiatama, Intan; Al Wafi, Adib; Djumhariyanto, Dwi; Ilminafik, Nasrul; Darsin, Mahros; Rudi Sugara, Imam
STATOR: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 1 (2025): JURNAL STATOR
Publisher : Jurusan Teknik Mesin

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Abstract

Indonesia still relies on the use of energy from non-renewable sources, especially oil and coal. However, the supply of energy from fossil sources is decreasing. The energy conversion process in solar panels causes an increase in temperature, especially in conditions of intense sunlight and hot weather. High temperatures can accelerate the degradation of materials in solar panels. Therefore, a cooling system needs to be developed to lower the temperature of the solar panels to produce electricity efficiently. This study aims to examine how the efficiency of solar panels can be affected by cooling fluids. The experimental method is used by setting the solar panels at an angle of 30°. Data is collected during sunny weather conditions with sunlight levels above 2000 lux. The solar panel used is a 20 WP monocrystalline type. The recorded data includes several parameters, namely current, voltage, light intensity, and solar panel temperature. The results indicated that solar panels with cooling had a lower surface temperature compared to solar panels without cooling. In addition, cooled solar panels have a higher efficiency than uncooled solar panels. Using a cooler with a certain discharge on the surface of a solar panel can increase efficiency significantly. Keywords: Cooling system, Solar Energy, Solar Panel, Efficiency

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