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All Journal EPI International Journal of Engineering Community Development Journal: Jurnal Pengabdian Masyarakat Innovative: Journal Of Social Science Research Jurnal Polimesin
Rante, Milka
Department Of Mechanical Engineering, Engineering Faculty, Universitas Kristen Indonesia Toraja
Humanities Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Public Health Other

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The Corrosion Erossion of Ship Propeller Al 7075 Produced by Gravity Sand Casting Milka Rante; Muhammad Syahid; Onny Sutresman
EPI International Journal of Engineering Vol 2 No 2 (2019): Volume 2 Number 2, August 2019 with Special Issue on Natural Disaster and Mitigat
Publisher : Center of Techonolgy (COT), Engineering Faculty, Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/epi-ije.082019.13

Abstract

Propeller is one of the important components of ships and boats that function as motor or boat propulsion. The mechanical properties required in propeller material are high toughness, easy to cast, and good engine capability, as well as good resistance to corrosion and erosion. One of the aluminum alloys that have been widely used in major vessels in propeller systems is the Nickel-aluminum-bronze (NAB) alloy because it has an excellent combination of mechanical properties and corrosion-erosion resistance. Another type of aluminum alloy that is widely used as a machining component is the Al 7075 T651 because it has the highest strength among other aluminum alloys. The mechanical properties of the Al 7075 T651 are directly proportional to the erosion resistance of the propeller which agrees with the pot tester porridge. The higher the value of the erosion propeller failure that occurs also increases with increasing testing rotational speed. For corrosion, a propeller with air testing media at a speed of 1000 rpm which results in significant corrosion products. Keywords: Al 7075 T651, Slurry Pot Tester, Corrosion Erosion
Pengaruh Dua Jenis Perekat Terhadap Briket Arang Tempurung Kelapa Halim, Abdul; Rante, Milka
Innovative: Journal Of Social Science Research Vol. 4 No. 1 (2024): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i1.9127

Abstract

The aim of this study is to determine the impact of coal brick particle dimensions as an alternative energy source. This study uses two types of comparison of coconut coal bricks with three different types of brick size comparison. The method used by observation or observation of calorie values, ash levels, volatilimeters and pressure strength and combustion tests of the briket. The results of the analysis in the study were obtained with the dimensions of briket 0.2 mm, 0.42 mm, 0.5 mm and briket with the highest calorie value is 56.67 cal/g with dimensions 0.5 adhered to kanji, the most value ash content is in coconut coal with an oil glue of 8.96% with dimensions 0.42mm, the maximum volatilimeter is worth 32.71 with oil glues with a size of 0.2 mm, and the strength of the pressure value is at the value of 0.9 gr/cm3. This study found that the differences between the adhesives used in the process of making coconut coal briquettes produced different parameters that influenced the burning rate of the birch.
Unjuk Kerja Turbin Angin Savonius Tiga Sudu Model Twist dengan Variasi Sudut Puntir Sudu Pasae, Nofrianto; Suririk, Matias; Nitha, Nitha; Rante, Milka
Innovative: Journal Of Social Science Research Vol. 5 No. 1 (2025): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v5i1.18177

Abstract

Turbin angin Savonius adalah salah satu sumber energi terbarukan yang memanfaatkan energi angin sebagai mekanisme gerak untuk mengubah energi mekanik menjadi energi Listrik. dalam penelitian ini menggunakan salah satu jenis turbin savonius yaitu tipe twist. Penelitian ini bertujuan untuk mengetahui pengaruh sudut puntir sudu terhadap torsi, daya, dan efisiensi turbin angin Savonius tiga sudu tipe twist. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dengan melakukan pengujian terhadap turbin angin Savonius tiga sudu tipe twist dengan variasi sudut puntir sudu dengan dimensi diameter 250 mm dan tinggi 350 mm. Pada penelitian ini dilakukan variasi sudut puntir sudu yaitu 120°, 150°, dan 180°. Torsi maksimum yang dihasilkan sudut puntir 180o sebesar 2,94 Nm dengan beban 15 kg dan putaran 0 rpm. Daya maksimum yang dihasilkan sudut puntir 180o sebesar 8,16Watt dengan beban 7 kg dan putaran 57,00 rpm. Efisiensi maksimum yang dihasikan sudut puntir 180o sebesar 15,38 % dengan putaran 57,00 rpm dan beban 7 kg.
Low-carbon steel fatigue behavior after pack carburizing with buffalo bone charcoal and barium carbonate media Bontong, Yafet; Rante, Milka; Nitha, Nitha
Jurnal Polimesin Vol 22, No 2 (2024): April
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v22i2.4596

Abstract

The pack carburizing method is a technique that can be employed to enhance the surface hardness of Low-Carbon Steel (LCS). This method can potentially improve the hardness of the material while maintaining its strength. This study aims to investigate how different carburizing media, specifically varying percentages of Buffalo Bone Charcoal (BBC) powder as a carbon source, impact the mechanical properties of LCS. The temperature in the carburizing process ranges from 850°C and 950°C while maintaining a holding time of 2 hours. The carbon derived from buffalo bone charcoal is finely ground and mixed with barium carbonate (BaCO3) as the energizer during this process. This study used different ratios of BBC powder and BaCO3 as carburizing mediums. The ratios tested were 60% BBC + 40% BaCO3, 70% BBC + 30% BaCO3, and 80% BBC + 20% BaCO3, based on the weight of the BBC powder used in the carburizing process. The steel will be combined with BaCO3 and powdered BBC for this research. Next, the fatigue test was examined. BBC in the pack carburizing process increases LCS carbon content by 0.735% from 0.268%. This change alters the steel's microstructure, possibly increasing its hardness and wear resistance. The direct link between BBC concentration and LCS carbon enrichment shows the process's efficiency. Pack carburizing also improves LCS fatigue strength. This improvement is due to higher BBC concentration, smaller carburizing medium particles, and higher processing temperatures. After carburizing, the LCS can resist 36,625 to 61,435 cycles.
PEMBUATAN BRIKET DARI ARANG SEKAM PADI SEBAGAI BAHAN BAKAR ALTERNATIF DI LEMBANG SA’DAN BALLOPASANGE’ Pasae, Nofrianto; Bontong, Yafet; Sampelawang, Petrus; Nitha, Nitha; Fikran, Fikran; Rante, Milka
Community Development Journal : Jurnal Pengabdian Masyarakat Vol. 4 No. 6 (2023): Volume 4 Nomor 6 Tahun 2023
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/cdj.v4i6.25856

Abstract

Lembang Ballopasange’ , Kecamatan Sa’dan, Kabupaten Toraja Utara merupakan salah satu desa yang perekonomiannya bertumpu pada sektor pertanian. Hampir seluruh masyarakat di Lembang Ballopasange’ berprofesi sebagai petani. Namun, ada satu permasalahan yang perlu diselesaikan yaitu limbah pertanian seperti sekam padi belum mampu dimanfaatkan dengan baik oleh masyarakat setempat. Limbah sekam padi selama ini dibuang dan dibakar begitu saja tanpa ada pemanfaatan, hal tersebut berpotensi menimbulkan pencemaran lingkungan. Sekam padi ini sebenarnya dapat dimanfaatkan, untuk pembuatan briket, tetapi minimnya pengetahuan dan keterampilan masyarakat tentang pengolahan limbah sekam padi menjadi briket. Proses pembuatan briket tidak memerlukan teknologi tinggi dan biaya murah. Pelatihan pembuatan briket arang ini sangat berguna untuk dilakukan yang bertujuan agar masyarakat di wilayah tersebut mampu memanfaatkan limbah sekam padi menjadi suatu produk teknologi tepat guna secara berkesinambungan yaitu briket arang yang dapat digunakan sebagai alternatif bahan bakar pengganti BBM, dan juga meminimalisir terjadinya pencemaran lingkungan. Adapun kegiatan ini diantaranya yaitu (1) sosialisasi pemanfaatan sekam padi menjadi briket arang; (2) pelatihan cara pembuatan cerobong untuk membakar sekam padi; (3) pengolahan sekam padi menjadi arang; (4) pembuatan briket arang; (5) penerapan penggunaan briket sebagai bahan bakar. Kegiatan sosialisasi dan pelatihan ini telah berhasil dilaksanakan sesuai dengan rencana kegiatan yang telah disusun, serta mendapat sambutan yang baik dari warga desa setempat yang dilihat dari kehadiran dan keterlibatan dalam kegiatan, serta berhasil dalam memberikan ketrampilan khusus bagi para warga setempat terutama para petani yang terlibat langsung dalam pembuatan briket.
Co-Authors A Halim Bontong, Yafet Fikran, Fikran Muhammad Syahid Nitha Nitha Onny Sutresman Sampelawang, Petrus Suririk, Matias