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All Journal Borneo Engineering: Jurnal Teknik Sipil Jurnal Abdimas Bina Bangsa Cylinder : Jurnal Ilmiah Teknik Mesin
Prita Dewi Basoeki
Fakultas Teknik, Universitas Katolik Indonesia Atma Jaya
Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Social Sciences Other

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Pengaruh Campuran Limbah Anorganik (Plastik) Sebagai Pengganti Semen Terhadap Kuat Tekan Paving Block Siti Nurul Hijah; Mohammad Hamsyuni; Prita Dewi Basoeki; Isdaryanto Iskandar
Borneo Engineering : Jurnal Teknik Sipil Volume 6 Nomor 2 Tahun 2022
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Borneo Tarakan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35334/be.v1i2.3451

Abstract

The increased production of waste that is hard to degrade is inorganic waste, so it takes effort to reduce it into a useful product.  One of the alternatives, inorganic waste recycling is becoming one of the mixture ingredients of paving blocks. This research aimed to determine the best composition of mixture ingredients towards the compressive strength of paving blocks with plastic waste as a substitute for cement. Research methods with experimental testing in the laboratory using paving blocks mixed with plastic waste as a substitute for cement. Plastic waste used is cleaned first and dried, chopped into smaller pieces afterward, and heated inside a cauldron until melted and ready to be mixed with sand. The composition used is 80% plastic: 20% sand, 70% plastic: 30% sand, 60% plastic: 40% sand, and 50% plastic: 50% sand. The result of the compressive strength test of paving block composition affected by a proper mixture of plastic waste as a substitute of cement towards compressive strength of paving block is type LDPE with a variation of 50%: 50%, with average compressive strength of 8,5 MPa with category D of paving block quality that good to be used for park and another usage. For the absorption capacity test of the paving blocks that absorb most of the water is located in the ratio of 50% plastic: 50% sand with 1,30% satisfy SNI requirement 03-0691-1996 entering grade A with average water absorption of 3%.
Pengembangan Lapisan Komposit 3YSZ - AL2O3 Pada Substrat Inconel Dengan Metode Electrophoretic Deposition Jeremy, Jason; Basoeki, Prita Dewi; Sugiarti, Eni
Cylinder : Jurnal Ilmiah Teknik Mesin Vol 10 No 1 (2024): APRIL 2024
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25170/cylinder.v10i1.5480

Abstract

Nickel-based alloys, known as superalloys, exhibit high resistance to oxidation and slow deformation at elevated temperatures, making them suitable for aircraft and gas turbine applications. However, corrosion remains a challenge at temperatures exceeding 800◦C. One solution is to coat the metal with heat-resistant layers such as YSZ and Al2O3 ceramics. Previous research indicates that adding Al2O3 above 30% has a negative impact. Therefore, a study was conducted to explore coatings with 10% and 20% Al2O3 compositions using electrophoretic deposition method at voltages of 20V, 40V, and 60V onan Inconel substrate. The study found that the 20% Al2O3 coating had a porosity of 26% and a maximum hardness of 105.64 HV at 20V voltage.
PEMANFAATAN ALAT PENGUPAS NANAS DENGAN SISTEM PRESS UNTUK PEDAGANG NANAS MADU DI TANGERANG SELATAN Gunawan, Harjadi; Darmawan, Marten; Soewono, Arka Dwinanda; Basoeki, Prita Dewi; Nahak, Demetrio; Pote, Juan William; Tobing, Sheila
Jurnal Abdimas Bina Bangsa Vol. 6 No. 1 (2025): Jurnal Abdimas Bina Bangsa
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/jabb.v6i1.1678

Abstract

The traditional process of peeling a pineapple using a knife is complex and time-consuming. Therefore, a specialized peeler is needed to increase the productivity of honey pineapple peddlers located in the Cisauk area, South Tangerang. The objective of this service activity is to design a prototype of a pineapple peeler using press technology that can peel pineapples more quickly and efficiently, and produce more precise and uniform cuts. This pineapple peeler consists of a knife ring with a diameter of 11-12 cm. It is also equipped with a spring system with an inner diameter of 30 mm, an outer diameter of 41 mm, and a length of 206 mm which functions as part of the mechanism to automatically return the knife ring and pressing lever to their original position. The knife and spring components are made from food-grade Stainless Steel 316 and 304, rsepectively. The test results show that the prototype peeler can peel honey pineapple measuring 10-12 cm in diameter in an average time of 13.11 seconds. It is hoped that the use of this peeler can help increase the productivity of small pineapple peddlers, as well as reduce their burden and work risks.
Co-Authors Eni Sugiarti Gunawan, Harjadi Isdaryanto Iskandar Jeremy, Jason Marten Darmawan Muhammad Hamsyuni Nahak, Demetrio Pote, Juan William Siti Nurul Hijah Soewono, Arka Dwinanda Tobing, Sheila