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All Journal ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin
ALQAP, A SOFWAN F
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Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Teknik Sortir Produk Pangan menggunakan Teknik Bio-impedansi ALQAP, A SOFWAN F; HAIDI, JUNAS; KURNIAWAN, ADHADI; VERONICA, SHINTIA; SUPARDI, NURULIMAN
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 9, No 3: Published July 2021
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v9i3.518

Abstract

ABSTRAKKarakterisasi untuk memisahkan mutu-mutu yang berbeda dalam aplikasi industri dapat dipenuhi dengan menggunakan alat dengan kemampuan yang terbatas. Teknik sortir memanfaatkan sistem papan evaluasi Eval AD5933 EBZ berakurasi 0,5% dilakukan terhadap pisang kepok (musa spp) hasil perkebunan di Pulau Enggano, Provinsi Bengkulu. Sistem dinyalakan dengan sambungan listrik bertegangan 2,7 V – 5,5 V mengeksitasi gelombang dari frekuensi 4000 Hz sampai 100.000 Hz kepada tiga sampel, masing-masing tiga kali sapuan. Tanpa ada modifikasi yang diberikan, sistem mampu membedakan impedansi musa spp antara jenis-jenis mutu mentah, mengkal dan masak melalui diagram Argand yang digambar dari data impedansi masing-masing. Diagram Argand yang dihasilkan menunjukkan jenis mutu masak dari musa spp lebih besar (dalam Ohm) dari jenisj-jenis mutu di bawahnya. Sistem ini dapat membantu industri pembuatan tepung pisang yang memerlukan pemilahan jenis bahan baku bermutu tertentu. Kata kunci: sortir, mutu, buah pisang kepok, impedansi ABSTRACTCharacterization to sortir different qualities in industrial applications can be fulfilled by using a tool with limited capability. Sorting technique using a 0.5% accuracy Eval AD5933 EBZ evaluation board system has been carried out on kepok banana (musa spp) from the plantation of Enggano Island, Bengkulu province. The system powered by a 2.7 V – 5.5 V DC low-voltage excited waves from 4000 Hz to 100,000 Hz frequencies to three samples, three sweeps of each. Without any modification, the system has been able to segregate different quality types of unripe, almost ripe and ripe from their Argand diagram drawn from their impedance data. The Argand diagram characterizes that the quality type of banana ripe is more expanded (in Ohm) than the other quality types of below. The system is applicable for a banana flour manufacturing industry that requires the sorting of certain types of quality raw materials.Keywords: sorting, quality, musa banana, impedance
CHARACTERIZATION OF WASTE PET POWDER AS ATOMIZATION PRODUCT Pamuji, Hari; Alqap, A Sofwan F; Suandi, Agus
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 3 No. 2 (2019): Oktober 2019
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v3i2.9861

Abstract

A nozzle of diameter 25 cm of a closed coupled type was set at an outlet gap 0,05 mm to atomize polyethylene terephthalate plastic wastes. Parameters of pressure and heating temperature were varied into 5 bar, 6 bar and 7 bar pressures, and at 275?C, 285?C and 295?C heating. A vessel to collect the product was 40 cm diametrally away from the nozzle mouth. The products were the form of powders, yarn and liquid. The powders were only 4,77%, 6,45% and 2,94% of each heating temperature aforementioned.
PENGUKURAN KESALAHAN GERAK SUMBU X DAN SUMBU Z BERDASARKAN HASIL CUTTING TEST MESIN BUBUT CNC INOVASI MENGGUNAKAN COORDINATE MEASURING MACHINE (CMM) Helmizar, Helmizar; Agustian, Alvin Bayu; Alqap, A Sofwan F
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 5 No. 1 (2021): April 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v5i1.20150

Abstract

The innovation CNC lathe is one of the machine tools with two axis. The X and Y axis are very influential in producing precision products the axis on the lathe because the axis on the lathe is as a tool for driving the chisel. To determine the precision or not of the motion of the axis, it is necessary to do a cutting test (Cutting Test) then the results of the cutting test are measured for precision using a Coordinate Measuring Machine (CMM). In the cutting test, the ISO 13041-6-M4 Series is used. In this cutting test, a radius of 50 mm is used, the test object can be reused, but the programmed radius should not be more than ± 10% of the nominal radius. The circle deviation tolerance is 0.025 mm. From the measurements made, the largest error value is 1.825056 mm in the first measurement in the CW direction, while the smallest error value is 1.824025 mm in the three-way CCW measurement, the resulting deviation continues to increase along with the cutting direction. The magnitude of the deviation, and the motion between the X-axis and the Z-axis are not collaborating with each other and not constant. This is because from the starting point of the cut on the X axis to the Z axis the deviation is getting bigger. resulting in inaccurate results from the cutting test. From the cutting test and measurements made, it can be concluded that it is necessary to make improvements to the Z axis motion.
Loss of Guide Vane Disposition on Francis Turbine of Unit 6 of the Hydroelectric Power Plant PLTA Ghozali, Syaiful; Alqap, A Sofwan F; Helmizar, Helmizar
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 5 No. 2 (2021): Oktober 2021
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v5i2.20167

Abstract

Hydropower is a power plant (PLTA) that is very environmentally friendly because it is clean and does not pollute the environment compared to other plants. PLTA, one of which is located in Bengkulu Province, is a power plant that utilizes the potential energy of water. Where the source of the water propulsion produced for the process of generating electricity is from the Tes lake which is sourced from the Air Ketahun river and the Air Pauh river, Lebong Bengkulu. Where this PLTA uses a Francis type turbine with a horizontal position. PLTA has 7 turbine units, with units 1 and 2 being old units producing 2 x 600 KW of power, while units 3 – 7 producing 5 x 4400 KW of power, so the total installed power is 23,200 KW. One of the problems that often occurs in PLTA is the occurrence of disposition of the guide vane on the turbine, where this time we will find out the cause of the disposition and how to overcome it so that there is no disposition and find out the loss of disposition of the guide vane on the Francis unit 6 turbine at PLTA. With this research done, the disposition occurs, it is necessary to take corrective action so that the unit will stop operating and can affect the level of profitability of the company. So that the results of the unit's work if it operates 24 hours are approximately 82 million rupiah, repairs are carried out for 16 hours with a loss of approximately 55 million rupiah. The occurrence of disposition is caused by damage to the transrack so that large waste enters the turbine section. In order to prevent disposition, it is necessary to repair or replace the transrack at the inlet.
Co-Authors Adhadi Kurniawan Agus Suandi, Agus Agustian, Alvin Bayu Ghozali, Syaiful Haidi, Junas Helmizar Pamuji, Hari SUPARDI, NURULIMAN VERONICA, SHINTIA