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All Journal FLYWHEEL : Jurnal Teknik Mesin Untirta
Hamdan Akbar Notonegoro
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Partial Discharge of Polyurethane/ Organoclay Composite Coated on Aluminum Conductor Overhead Lines Bambang Soegijono; Ova Kurniawan; Hamdan Akbar Notonegoro; Arief Syarifuddin Fitrianto
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume VI, Nomor 2, October 2020
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v1i1.9233

Abstract

Aluminum conductor have been used worldwide as the primary conductive materials for high voltage electrical transmission lines. The partial discharge behavior of the aluminum conductor have been obeserved during operation due to the transmission line's performance to serve electricity. The partial discharge of aluminum alloy coated by polyurethane/organoclay (PClay) composite material was studied. PClay composites were prepared by adding organoclay with different content in polyurethane as a matrix then coated on an aluminum conductor sample. A partial discharge test was conducted to obtain the behavior of partial discharge versus voltage. It was found that an escalation of organoclay content in the polyurethane reduce partial discharge appears.
Pengaruh Cetakan Pasir Daur Ulang Berpengikat Waterglass Terhadap Permukaan Logam Hasil Pengecoran Moch Iqbal Zaelana Muttahar; Hamdan Akbar Notonegoro; Greida Frista; Bambang Soegijono; Hasanudin Gufron Fachrudin; Ferry Budhi Susetyo; Nazarudin Koto
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume IV Nomor 1, April 2018
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (986.771 KB) | DOI: 10.36055/fwl.v1i1.3334

Abstract

Penggunaan cetakan pasir dalam proses produksi industri pengecoran logam menghasilkan limbah pasir yang kian melimpah dan berdampak negatif bagi lingkungan. Salah satu upaya untuk mengatasi persoalan tersebut adalah mendaur ulang limbah pasir untuk dimanfaatkan kembali sebagai cetakan. Salah satunya adalah jenis limbah pasir dengan pengikat waterglass yang memiliki sifat keras dan tak mudah hancur dari Balai Besar Logam dan Mesin BPPI KEMENPRIN, Bandung. Untuk itu dalam penelitian ini diselidiki pengaruh penggunaan pasir cetak daur ulang berpengikat waterglass terhadap produk logam hasil pengecoran. Ditemukan bahwa pasir hasil daur ulang mengikat air lebih banyak dibandingkan pasir baru. Untuk itu variasi waterglass sebanyak 7% dan 10% (Vol. %) ditambahkan sebagai pengikat dalam membuat cetakan menggunakan pasir daur ulang tersebut. Dari kedua variasi tersebut nampak bahwa penambahan waterglass menurunkan nilai permeabilitas pasir cetak hasil daur ulang dan menaikkan nilai kuat tekannya. Nilai kekasaran permukaan  logam hasil cetakan pun menjadi lebih tinggi dengan penambahan tersebut. Kandungan air dalam pasir daur ulang telah menyebabkan cacat permukaan pada logam hasil cetakan. Untuk itu kandungan air tersebut perlu hilangkan sebelum pasir daur ulang digunakan sebagai cetakan.
Effect of magnetic field on the behavior of Electrochemical oxidation of Aluminum in 3.5% NaCl solution Surya Darma; Sukarno Sukarno; Bambang Soegijono; Hamdan Akbar Notonegoro; Naila Mubarok
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 8, Issue 1, April 2022
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.14703

Abstract

An irreversible electrochemical reaction from material interaction with the environment and causing degradation is known as corrosion. The electrolyte changes significantly affect the corrosion's reaction kinetics. Unknown factors and various notable factors influence the corrosion rate of a particular material in the environmental system. Significant interest in magnetic fields and their effects on electrochemical reactions have recently been gained. This paper studies the effect of an external magnetic field on the electrochemical oxidation of Aluminum (Al) in a 3,5% NaCl solution. The magnetic field 0; 0,8; 1,4; and 2,1 Tesla were used to expose the samples during corrosion testing. We found that the effect of a magnetic field on electrochemical oxidation shifts the oxidation potential to higher or lower than the oxidation potential without a magnetic field. Moreover, the oxidation potential's value depends on the magnetic field's intensity.
Co-Authors Arief Syarifuddin Fitrianto Bambang Soegijono Ferry Budhi Susetyo Greida Frista Hasanudin Gufron Fachrudin Moch Iqbal Zaelana Muttahar Naila Mubarok Nazarudin Koto Ova Kurniawan Sukarno Sukarno Surya Darma