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All Journal METAL : Jurnal Sistem Mekanik dan Termal Jutek JAGO Journal of Applied Mechanical Technology (JAMET)
Muhammad Luthfi
Politeknik Negeri Indramayu
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Electrical & Electronics Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Pengujian Turbin Air Pusaran Gravitasi dengan Variasi Overlap Ratio Rotor Muhammad Luthfi; Meri Rahmi; Rachmatullah -
METAL: Jurnal Sistem Mekanik dan Termal Vol 6, No 1 (2022): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1045.707 KB) | DOI: 10.25077/metal.6.1.14-23.2022

Abstract

The gravitational water vortex turbine is a turbine system that can convert the energy from artificial water vortex by means of the drained water through the basin outlet to the kinetic energy of rotor rotation. This type of turbine system is able to produce energy despite the low head of water flow. Many researches were conducted to improve the efficiency of this turbine by changing the shape of basin, or the rotor. Meanwhile, the Savonius rotor has good starting rotation and ease of fabrication, but low efficiency. One way to increase the efficiency of this rotor is to apply the gap between the blades which is called Overlap Ratio (OR). In this research, the gravitational water vortex turbine with the conical-shape basin was combined with the various-OR Savonius rotors with area proportion of 26,88% and without endplate and the effect was observed to the efficiency of turbine. The volume flowrate of channel was maintained constant at 0,005 m3/s while mass was added gradually for the torque measurement system by using rope brake dynamometer. The result showed that for all rotors, the greater efficiency occurred in the low rotational speed. Moreover, the rotor with OR of 0,15 had greater mechanical efficiency which was around 22,78% for the rotor with endplate 26,88% and 27,18% for the rotor without endplate than rotor with OR of 0. Meanwhile, rotor without endplate had higher maximum mechanical efficiency for all OR variation than that with endplate 26,88%.
Perancangan Alat Pembakar Sampah Rumah Tangga Bertenaga Surya Dengan Pemantik Glow Plug Suliono; Muhammad Luthfi; Delffika Canra
Jurnal Teknik Juara Aktif Global Optimis Vol. 2 No. 2 (2022): December
Publisher : STTI Bontang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53620/jtg.v2i2.92

Abstract

Sampah merupakan suatu benda yang tidak memiliki nilai atau tidak berharga yang ada di sekitar lingkungan masyarakat. Pada dasarnya masyarakat malas membuang sampah rumah tangga ke tempat pembuangan sementara (TPS) yang dibuat oleh program pemerintah karena lokasi TPS agak jauh dari pemukiman masyarakat sehingga kebanyakan sampah rumah tangga ini ditumpuk di belakang rumah atau di lahan kosong. Tujuan penelitian ini adalah untuk mengetahui desain alat pembakar sampah rumah tangga bertenaga surya dengan pemantik glowplug yang efektif dan efisien. Prinsip kerja alat pembakar sampah rumah tangga bertenaga surya dengan pemantik glowplug yaitu dengan cara memanfaatkan panas matahari sebagai sumber daya untuk menyalakan glowplug sehingga sampah yang masuk ke ruang pembakar dan terkena ujung glowplug bisa langsung terbakar. Rangka base yang dirancang memiliki dimensi 1000 x 600 mm dengan menggunakan material besi hollow. Sementara kapasitas ruang pembakar sebesar 0,0494 . Jenis panel surya yang dipilih yaitu monocrystalline karena performanya lebih baik pada saat cuaca mendung. Hasil dari perhitungan, panel yang dipakai berkapasitas 230WP yaitu panel 115WP dua buah, baterai yang dipakai sesuai kebutuhan yaitu 12V 65Ah.
Teknik Pemrosesan Gambar Digital pada Hasil Pengelasan TIG Aluminum Paduan untuk Aplikasi Pengukuran Lebar Manik Las Mohammad Azwar Amat; Muhammad Luthfi
Journal of Applied Mechanical Technology Vol 2 No 1 (2023): Journal of Applied Mechanical Technology (JAMET)
Publisher : Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1045.545 KB) | DOI: 10.31884/jamet.v2i1.33

Abstract

ABSTRACT – The process of edge detection on aluminum 1100 material as a result of welding tungstent inert gas (TIG) has been successfully developed, difficulties in the edge detection process due to the large number of impurities in the form of vertical streaks on the weld metal can be overcome using several methods. Of the many methods used, double thresholding and hysterisis have the most important role and contribution in the process of cleaning impurities. The hough transform process requires setting the number of meeting lines to get two lines with rho = (229, 146) and theta = (1.582496, 1.553343). Method 4 is the shortest method of pre-processing until line detection, namely GS > Gauss > Sobel > DT > Hys > HT. In further development, the development of an interface that makes it easy to vary the threshold value and the number of meeting lines, then the pixel/mm or pixel/cm scale calibration process needs to be carried out.
Co-Authors Delffika Canra Meri Rahmi Mohammad Azwar Amat Rachmatullah - Suliono