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All Journal Rekayasa Mesin FLYWHEEL : Jurnal Teknik Mesin Untirta Jurnal Elektronika dan Telekomunikasi JURNAL KAJIAN TEKNIK MESIN Jurnal Konversi Energi dan Manufaktur
Bambang Soegijono
Universitas Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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Sifat Termal dan Analisis Komposisi Material Barium Zirkonium Titanat (BZT) dengan Doping Lantanum dan Indium Septian Rahmat Adnan; Bambang Soegijono
JURNAL KAJIAN TEKNIK MESIN Vol 5, No 2 (2020): JURNAL KAJIAN TEKNIK MESIN
Publisher : Universitas 17 Agustus 1945 Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52447/jktm.v5i2.3463

Abstract

Material Barium Zirkonium Titantat (BZT) dibuat menggunakan metode sol gel yang dilanjutkan dengan Spin Coating pada substrat Silikon. Untuk mendapatkan material Barium Zirkonium Titantat (BZT)dalam bentuk serbuk dilakukan pemanasan menggunakan hotplate pada suhu 90oC hingga larutan BZT berubah menjadi serbuk.  Selanjutnya untuk menumbuhkan lapisan BZT pada substrat, dilakukan metode spin coating yang dilanjutkan proses pyrolisi. Selanjutnya substrat yang telah dilapisi larutan BZT  dipanaskan pada suhu 800oC selama 3 jam. Untuk mengetahui sifat termal dan kristalisasi pada BZT dilakukan Uji DTA/TGA. Pengujian EDAX dilakukan untuk mengetahui komposisi lapisan BZT yang telah terdeposisi pada substrat. Dari hasil uji DTA/TGA terlihat bahwa proses kristalisasi BZT mulai terjadi pada suhu 400oC dan proses endotermik dari BZT terjadi pada suhu 463oC. Hasil uji  EDAX  komposisi unsur Barium, Titanium, serta doping Lantanum dan Indium telah terdeposisi pada subtrat silikon, serta dari hasil tersebut dapat disumpulkan kristal BZT dengan doping La dan In telah berhasil di deposisi dan ditumbuhkan pada substrat Si.
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.
The Copper Influence into Physical and Mechanical Properties of the Al-5Si Alloy Isom Mudzakir, MSi.; Suhariyanto Suhariyanto; Renanto Putra Wijaya; Hamdan Akbar Notonegoro; Bambang Soegijono
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 2, October 2021
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.12566

Abstract

The microstructure and the hardness due to addition of copper of the Al-Si-Zn-Mg-Cu Alloy have been investigated. The copper has been varied from 0 wt.%– 4.9 wt.% in order to see how the microstructure and the hardness of the alloy change. The Heat treatment at temperature 510 oC during 5 hours and then cooling to ambient temperature, have done to foster the dissolution of copper in the crystal and then precipitate during cooling. The results show that the alloying element form a phase distributed in the matrix of the alloy. Increasing the content of the copper makes the form of the second phase smaller and at the matrix show fine particle distributed mostly entire of the surface. The hardness of the alloy increase as the copper content increase. The increase in hardness might come from the fine particle distributed in the matrix. The onset, endset and melting temperature tend to decrease as the copper content increase.
Perilaku Ketahanan Korosi Komposit Coating Poliuretan/Silika/ Karbon Pada Baja Karbon Rendah Bambang Soegijono; Ferry Budhi Susetyo; Hamdan Akbar Notonegoro
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.4775

Abstract

Salah satu problematika kendaraan bermotor saat ini adalah korosi. Umumnya cat pelindung akan cepat rusak karena disebabkan kondisi operasional kendaraan pada lingkungan yang tidak menentu. Komposit coating poliuretan dengan variasi silika/karbon disiapakan, kemudian diaplikasikan pada material baja karbon rendah dengan spray gun. Pada lapisan yang terbentuk di lakukan analisis Fourier Trasform Infra Red (FTIR), Thermogravimetry (TGA), Differential Scanning Calorimetry (DSC), Mikroskop Optik dan uji salt spray. Hasil FTIR, TGA, pengamatan optik dan uji salt spray menunjukkan semakin tinggi kadar karbon/silika maka akan semakin tahan terhadap korosi.
Electrochemical Behavior, Structure, and Morphology of Electrodeposited Nickel on Copper Alloy Prepared from Sulfate Bath without Additive Addition Bambang Soegijono; Ferry Budhi Susetyo; Hamdan Akbar Notonegoro; Musfirah Cahaya Fajrah
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume VI, Nomor 1, April 2020
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v2i1.7724

Abstract

Nickel and nickel alloy has good chemical and physical properties to enhance corrosion resistance. Electrodeposited nickel layer are expected to enhance corrosion resistance of copper as substrates. The difference distance crystal plane of Nickel and Copper is about 0.02 – 0.03 Angstrom. The electrochemical behavior, structure and morphology of electrodeposited nickel on copper substrate in sulfate solution were investigated. Electrodepositions of nickel layer were conducted at room temperature with various current densities (10 mA/cm², 20 mA/cm², and 30 mA/cm²). Electrochemical behavior, structure, and morphology of the samples were analyzed by using potensiostat, x-ray diffraction (XRD), and Scanning electron microscope (SEM). The x-ray diffraction patterns show that the nickel has cubic FCC crystal system and space group Fm-3m.  The current density during electrodeposition influence crystal parameter, crystallite size and micro strain of nickel film deposited. Electrodeposited nickel with current density 30 m A/cm² shows the best corrosion resistance.
Effect Of Titanium On Corrosion Behavior Of Aluminum Alloy 3104 As a Candidate Material For Radiator Combustion Engines Arief Syarifuddin Fitrianto; Bambang Soegijono; Caing Caing; Hamdan Akbar Notonegoro
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.10855

Abstract

Aluminum Alloy 3104 is aluminum usually used for beverage can. By modifying the content of Titanium content in the alloy, it is expected that this material will be suitable for radiator engine combustion. Especially for its corrosion behavior in coolant solution. Aluminum alloy with different content of Titanium was investigated on its crystal structure, morphology and its corrosion behavior in ethylene glycol solution which is usually used as additive in coolant water. X-ray diffractometer, Electron microscope and potentiodynamic were used to investigate the crystal structure, morphology and corrosion behavior respectively. The results show (002) crystal plane dominate the surface of the sample as the Titanium increase. The (111) and (002) crystal plane are very low compare to (022) crystal plane. Crystallite size and micro strain are affected by addition of Titanium. Surface morphology are clearly affected by the addition of Titanium. Addition of Titanium causes corrosion behavior of the samples. It concludes that the aluminum alloy with different Titanium content in this research, can be used for making radiator combustion engine.
PERHITUNGAN KURVA HISTERESIS INTRINSIK MATERIAL ZINC OXIDE (ZnO) Septian Rahmat Adnan; Bambang Soegijono
Jurnal Konversi Energi dan Manufaktur Vol. 5 No. 1 (2018)
Publisher : Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (358.518 KB) | DOI: 10.21009/JKEM.5.1.3

Abstract

Energi bebas Gibbs dan kurva polarisasi spontan dari Zinc Oxide (ZnO) dihitung menggunakan Teori Landau-Devonshire. Program komputasi untuk menghitung Energi bebas Gibbs dan kurva polarisasi spontan dibuat pada Delphi 6 . Dari hasil perhitungan menunjukan bahwa energi bebas Gibbs terendah terdapat pada ZnO doping Li 1%s yang menunjukan struktur kristal paling stabil.
Microstructures, Magnetic Properties and Microwave Absorption Characteristics of Ti2+ -Mn4+Substituted Barium Hexaferrite Maykel Manawan; Azwar Manaf; Bambang Soegijono; Asep Yudi Hercuadi
Jurnal Elektronika dan Telekomunikasi Vol 14, No 1 (2014)
Publisher : LIPI Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v14.15-19

Abstract

The effect of Ti2+-Mn4+substitution on microwave absorption has been studied for BaFe12-2xTixMnxO19 ferrite, where x varies from 0.2, 0.4, 0.6 and 0.8.Ti2+-Mn4+ ions were obtained from TiO and MnO2 precursors which were mechanically alloyed together with BaCO3 and Fe2O3 precursors. X-ray diffraction (XRD) patterns for sintered samples confirmed that the materials are consisted with single phase BHF structure. Unit cell volume and crystallite size was found increase with increasing x. Crystallite size for all samples below 70 nm, but the grain morphology shown that the grains is in range of 200 - 400 nm, which concluded that each grain are polycrystalline. The saturation magnetization is increases up to x = 0.4 and decrease for higher x values, while the coercivity remains decreases monotonically. These results were interpreted in terms of the site preferential occupation of Ti2+ and Mn4+ at low level substitution.These substitution revealed of enhanced reflection loss (RL) up to 25 dB forx=0.6.It suggested that the synthesized can be employed as effective microwave absorbers in various devices.
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.
The Increase Voltage Effect of The Interface Bipolar Plate to Increase H2/O2 Production Volume as alternative fuel Khadijah Barorotus Salamah; Abdurrahman azzam Akbar; Bambang Soegijono; Hamdan Akbar Notonegoro
FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 9, Issue 1, April 2023
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36055/fwl.v0i0.20478

Abstract

Renewable fuels hold the key to the increasing energy demand and environmental issues. In recent years, the installed capacity of renewable energy sources has experienced rapid growth based on limited remaining oil reserves. Applying hydrogen/oxygen as fuel in combustion engines is possible. Hydrogen (H2) which burns with Oxygen (O2) in the combustion chamber, will produce H2O compounds that are environmentally friendly. In this study, we wanted to see the effect of increasing the voltage of the interface bipolar plate to increase the H2 and O2 gas molecules volume. The experimental results show that the breaking of bonds in water compounds which utilize the interaction force between fields and charges, has been affected by an increase in voltage. The time to convert the H2O compound into H2/O2 gas molecules decreases with the increasing voltage between interfacing electrodes. The voltage increase affects the Volumetric Flow Rate (VFR) of H2 dan O2 gas molecules. This study also shows that when a voltage of 10 Volts is applied at the electrode interface, charge transport occurs optimally.
Co-Authors Abdurrahman azzam Akbar Arief Syarifuddin Fitrianto Arief Syarifuddin Fitrianto Asep Yudi Hercuadi Azwar Manaf Budhy Kurniawan Caing Caing Ferry Budhi Susetyo Ferry Budhi Susetyo Hamdan Akbar Notonegoro Hamdan Akbar Notonegoro Hamdan Akbar Notonegoro Isom Mudzakir, MSi. Khadijah Barorotus Salamah Maykel Manawan Musfirah Cahaya Fajrah Naila Mubarok Ova Kurniawan Renanto Putra Wijaya Septian Rahmat Adnan Septian Rahmat Adnan Suhariyanto Suhariyanto Sukarno Sukarno Surya Darma