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All Journal Jurnal Fisika Unand Jurnal Teknik Mesin Jurnal Energi dan Teknologi Manufaktur (JETM)
Yuli Yetri
Jurusan Teknik Mesin, Politeknik Negeri Padang
Automotive Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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PENGUJIAN DAN PERAWATAN MESIN GRANULAR Zul Ihsan; Robby Gunawan; Eka Sunitra; Rivanol Chadry; Yuli Yetri
Jurnal Energi dan Teknologi Manufaktur Vol 3 No 02 (2020)
Publisher : Polinema Press, Politeknik Negeri Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33795/jetm.v3i02.54

Abstract

This paper discusses the granulator machine testing process. This test aims to determine the process of occurrence of granular. Granular pellets are one form of feed pellets, granular (rounded) and light in weight. Granular pellets are not easy to sink but are easily broken down in water. This type of pellet is made without going through the process of pressing, so that it can produce feed grains that are light weighted, not easily submerged but easily decomposed in water. The goal is to determine the optimal state of the granulator machine with three angular tilt positions, it can perform maintenance on the granulator machine. The granulator machine testing process is carried out by means of the plate angle measurement process, the water mixture measurement process, the plate speed measurement process. Material used for the testing process uses flour and water. While the tools used in the granulator machine testing process are spray, 14 key, sieve, and container. After testing at 3 angles at an angle of 25o, angle of 30o and angle of 35o the authors conclude that this machine can produce small granules at a slope of 250 with an engine speed of 17 rpm and average weight of granular which is produced 236 grams. While the results of hourly 3 kg / hour.
Pengaruh Komposisi Kulit Buah Kakao, Ampas Tebu, dan Perekat terhadap Sifat Fisis dan Mekanis Papan Partikel dari Campuran Limbah Kulit Buah Kakao dan Ampas Tebu Yeni Fathatun Najihah; Dwi Puryanti; Yuli Yetri
Jurnal Fisika Unand Vol 7, No 1 (2018)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (503.95 KB) | DOI: 10.25077/jfu.7.1.8-14.2018

Abstract

Penelitian ini bertujuan untuk mengetahui perlakuan bahan terbaik terhadap sifat fisis dan mekanis papan partikel. Dalam penelitian ini digunakan dua variasi perlakuan bahan, yaitu perbandingan komposisi bahan dan jumlah perekat. Variasi komposisi bahan yang digunakan antara kulit buah kakao dan  ampas tebu adalah 100:0%, 75:25%, 50:50%. Kadar perekat  isosianat  yang digunakan adalah 12%, 14%, dan 16%. Ukuran panjang serat ampas tebu yang digunakan adalah 3 cm. Parameter yang diukur adalah kadar air, kerapatan, daya serap air, keteguhan patah, kuat tekan sejajar permukaan dan kekuatan rekat internal. Didapatkan papan partikel terbaik adalah papan partikel dengan perbandingan komposisi bahan 50:50% dengan kadar perekat 16%. Hasil penelitian menunjukkan bahwa nilai sifat fisis yang dihasilkan memenuhi standar JIS A 5908 (2003), SNI 03-2105-2006, dan FAO (1996). Namun pada pengujian sifat mekanis terdapat beberapa nilai MOR papan partikel yang tidak memenuhi standar.  Berdasarkan persentase densitas papan partikel maka papan partikel yang dihasilkan termasuk jenis medium density particle board hingga high density particle board.Kata kunci: kulit buah kakao, ampas tebu, perekat isosianat, papan partikel
KAJIAN KOROSI PADA MESIN PERKAKAS AKIBAT PERBANDINGAN COOLANT (PENDINGIN) YANG TIDAK SEIMBANG Nota Effiandi; Yuli Yetri; Nofriadi Nofriadi
Jurnal Teknik Mesin Vol 1 No 1 (2004): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

One of the effort to lessen worn-out of tool machine is used by spraying coolant (mixture water and oil). Beside that dilution of coolant also function to slow down the rate of corrosion. But practically often arise damage ahead of schedule, so that old age to wear appliance become shorter. This research was conducted to dilution of coolant made with mixture irrigate faucet with oil and pure water mixture (aquades) with oil, were in the reality obtained that dilution of coolant aqueous of quicker faucet of its process of him from at using pure water. This matter was caused by pregnant faucet water of metal minerals able to form salt when mixed with oil, so that will quicken rustiness process. Later; Then for the variation of different composition in the reality more and more oil longer process rustiness happened. The corrosion at tool machine during the time was caused usage of faucet water to make dilution of coolant and also composition making of dilution of coolant imprecise.
Co-Authors Dwi Puryanti Eka Sunitra Nofriadi Nofriadi Nota Effiandi Rivanol Chadry Robby Gunawan Yeni Fathatun Najihah Zul Ihsan