Articles
<![CDATA[The Copper Influence into Physical and Mechanical Properties of the Al-5Si Alloy ]]>
<![CDATA[Isom Mudzakir, MSi.]]>;
<![CDATA[Suhariyanto Suhariyanto]]>;
<![CDATA[Renanto Putra Wijaya]]>;
<![CDATA[Hamdan Akbar Notonegoro]]>;
<![CDATA[Bambang Soegijono]]>
<![CDATA[ FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 2, October 2021 ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
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DOI: 10.36055/fwl.v0i0.12566
<![CDATA[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.]]>
<![CDATA[Mass Loss Pemaduan Alloy Ni-Fe-Mn-Al Metode Vacuum Arc Melting Furnace Terhadap Hume-Rothery Rules ]]>
<![CDATA[Hamdan Akbar Notonegoro]]>
<![CDATA[ FLYWHEEL : Jurnal Teknik Mesin Untirta Volume III Nomor 2, Oktober 2017 ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
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DOI: 10.36055/fwl.v2i1.2265
<![CDATA[Alloy merupakan material logam campuran yang dibuat untuk menghasilkan sifat mekaniknya, ketahanannya terhadap kondisi lingkungan kerja maupun sifat magnetik yang diharapkan. Material alloy yang dibuat menggunakan Compact Arc Melter MAM–1 memiliki resiko terbuangnya sejumlah bagian (mass loss) komposisi saat peleburan. Untuk itu perlu diidentifikasi pengaruh metode peleburan yang digunakan terhadap mass loss dan hubungannya dengan Hume-Rothery’s Rules. Dalam penelitian ini telah dibuat sistem alloy Ni20Fe30Mn32Al18 (at. %) menggunakan Compact Arc Melter MAM – 1 dengan variasi level busur. Ditemukan bahwa penggunaan busur api level 3 menghasilkan kehilangan massa yang lebih besar dari level 4. Namun, komposisi paduan yang diperoleh dengan busur api level 3 lebih proporsional terhadap komposisi yang direncanakan dibandingkan dengan busur api level 4, yang mengalami defisit kandungan Mn. Dari Hume-Rothery’s Rules diketahui bahwa perbedaan jari-jari atom dan elektron valensi antara elemen pelarut dan terlarut mempengaruhi besarnya mass loss yang terjadi. Untuk itu, agar rasio komposisi (wt. %) paduan yang dihasilkan proporsional dengan komposisi yang direncanakan, maka busur api yang digunakan dalam peleburan adalah busur api level 3.]]>
<![CDATA[The H2S Corrosion Effect On The Stationary Turbine Blade ]]>
<![CDATA[Thomas Agus Bayu Prasetyo]]>;
<![CDATA[Hamdan akbar Notonegoro]]>;
<![CDATA[Ova Kurniawan]]>;
<![CDATA[Sunardi Sunardi]]>
<![CDATA[ FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021 ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
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DOI: 10.36055/fwl.v0i0.11213
<![CDATA[The Geothermal fluids were disturbed by volcanic gas sulfide deposit reactions which form by reaction of metal(s) with H2S. this sulfate acid is one of the most corrosive compounds in the steam which lead the pitting, stress corrosion cracking and other corrosion mechanisms. An optical microscope, XRF dan X-ray diffraction is used to observe the sediment samples that came from stationary blades. The results show that it mainly consists of 89.7%wt iron sulfide (FeS) and 10.3%wt arsenic trisulfide (As2S3). This phase is toxic by inhalation and ingestion. Downstream steam pipeline treatment is required to reduce sulfide carried away into steam turbines such as scrubbing or washing steam. For this reason, special handling is needed for the toxic waste resulting from washing.]]>
<![CDATA[Pengaruh Perlakuan Panas Terhadap Sifat Mekanik Paduan Besi Tuang Putih Dengan Cr-Ni Untuk Bilah Shot Blasting ]]>
<![CDATA[Hamdan Akbar Notonegoro]]>;
<![CDATA[Hasanudin Gufron Fachrudin]]>;
<![CDATA[Greida Frista]]>;
<![CDATA[Yusvardi Yusuf Yusuf]]>;
<![CDATA[Erny Listijorini]]>;
<![CDATA[Rina Lusiani]]>;
<![CDATA[Kurnia Nugraha]]>
<![CDATA[ FLYWHEEL : Jurnal Teknik Mesin Untirta Volume III Nomor 2, Oktober 2017 ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
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DOI: 10.36055/fwl.v2i1.2585
<![CDATA[Bilah sebagai salah satu komponen yang berfungsi sebagai pelontar bola-bola logam dalam mesin shot blasting, masih banyak yang diimpor dari luar negeri. Namun demikian, ditemukan banyak kegagalan ataupun umur pakai yang pendek yang disebabkan karena bahan bilah tersebut rentan mengalami kerusakan lebih cepat akibat kondisi operasional. Dalam penelitian ini dikembangkan bahan bilah berbasis paduan besi tuang putih dengan Cr-Ni yang diberi variasi perlakuan panas, baik hardening maupun tempering, untuk meningkatkan sifat mekaniknya. Dari penelitian ini diperoleh hasil bahwa nilai optimal kenaikan sifat mekanik diperoleh melalui hardening pada suhu 1000 oC yang dilanjutkan tempering pada suhu 400 oC. Pada kondisi tersebut, sampel hasil paduan memiliki struktur fasa ferit acicular, perlite dan karbida berbentuk bulat-bulat kecil. Struktur fasa ini membuat sifat mekanik sampel menjadi lebih keras dan lebih tahan terhadap gerusan saat terjadi gesekan.]]>
<![CDATA[Perilaku Ketahanan Korosi Komposit Coating Poliuretan/Silika/ Karbon Pada Baja Karbon Rendah ]]>
<![CDATA[Bambang Soegijono]]>;
<![CDATA[Ferry Budhi Susetyo]]>;
<![CDATA[Hamdan Akbar Notonegoro]]>
<![CDATA[ FLYWHEEL : Jurnal Teknik Mesin Untirta Volume V Nomor 1, April 2019 ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
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DOI: 10.36055/fwl.v0i0.4775
<![CDATA[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.]]>
<![CDATA[Mass Loss Pada Pemaduan Logam Ni-Fe-Mn-Al Metode Vacuum Arc Melting Furnace Terhadap Hume-Rothery Rules ]]>
<![CDATA[Hamdan Akbar Notonegoro]]>;
<![CDATA[Bambang Soegijono]]>;
<![CDATA[Sovian Aritonang]]>;
<![CDATA[Sunardi Sunardi]]>;
<![CDATA[Dhimas Satria]]>
<![CDATA[ FLYWHEEL : Jurnal Teknik Mesin Untirta Volume III Nomor 2, Oktober 2017 ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
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DOI: 10.36055/fwl.v2i1.2648
<![CDATA[Logam paduan merupakan material hasil campuran antar logam, atau antara logam dengan elemen lain, yang dibuat untuk menghasilkan sifat dan karakter material logam yang diinginkan. Material logam paduan yang dibuat menggunakanCompact Arc Melter MAM–1 memiliki resiko terbuangnya sejumlah bagian (mass loss) komposisisaat peleburan. Untuk itu perlu diidentifikasi pengaruh metode peleburan yang digunakan terhadapkondisi mass loss. Dari Hume-Rothery’s Rules diketahui bahwa perbedaan jari-jari atom dan elektron valensi antara elemen pelarut dan terlarut mempengaruhi besarnya mass loss yang terjadi. Dalam penelitian ini telah dibuat logam paduan sistem Ni20Fe30Mn32Al18 (at. %)menggunakan Compact Arc Melter MAM – 1 dengan dua variasi level busur. Ditemukan bahwa penggunaan busur api level 3 menghasilkan kehilangan massa yang lebih besar dari level 4. Namun, komposisi paduan yang diperoleh dengan busur api level 3 lebih proporsional terhadap komposisi yang direncanakan dibandingkan dengan busur api level 4, yang mengalami defisit kandungan Mn. Dengan demikian busur api level 3 digunakan untuk mendapatkan paduan dengan rasio komposisi (wt. %) proporsional dengan komposisi yang direncanakan.]]>
<![CDATA[Effect Of Titanium On Corrosion Behavior Of Aluminum Alloy 3104 As a Candidate Material For Radiator Combustion Engines ]]>
<![CDATA[Arief Syarifuddin Fitrianto]]>;
<![CDATA[Bambang Soegijono]]>;
<![CDATA[Caing Caing]]>;
<![CDATA[Hamdan Akbar Notonegoro]]>
<![CDATA[ FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 1, April 2021 ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
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DOI: 10.36055/fwl.v0i0.10855
<![CDATA[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.]]>
<![CDATA[Magnetism of Stainless Steel 304 Due to Cold Rolling ]]>
<![CDATA[Naila Mubarok]]>;
<![CDATA[Hamdan Akbar Notonegoro]]>
<![CDATA[ FLYWHEEL : Jurnal Teknik Mesin Untirta Volume 7, Issue 2, October 2021 ]]>
Publisher : <![CDATA[Universitas Sultan Ageng Tirtayasa ]]>
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DOI: 10.36055/fwl.v0i0.12567
<![CDATA[304 austenitic stainless steel (SS 304) is widely used in the oil and gas industry for its resistance to high pitting and stress corrosion. However, Its ability to withstand wear resistance due to fine sand particles carried by oil and gas is very limited. Cold rolling is one of the methods used to mechanically increase the hardness of SS 304 steel. As a result of this method there is a deformation of the structure which causes a phase transformation from austenite to martensite. This change is accompanied by the formation of magnetic properties in the new phase.The increase in the percentage of deformation is followed by an increase in the magnetic saturation value and a change in the magnetic coercivity. Magnetic saturation is influenced by the large population of martensite phase formed, while the magnetic coercivity is influenced by grain shape of the martensite phase. This magnetic property will respond to an external magnetic field. So that the identification of the deformation can simply be known by observing the interaction of the SS 304 material with a magnetic object that is brought near.]]>
<![CDATA[Pengaruh Perendaman Bambu Dengan Air Laut Terhadap Kekerasan dan Laju Keausan Komposit Kampas Rem ]]>
<![CDATA[Sunardi Sunardi]]>;
<![CDATA[Hermawan Susanto]]>;
<![CDATA[Rina Lusiani]]>;
<![CDATA[Iman Saefuloh]]>;
<![CDATA[Hamdan Akbar Notonegoro]]>;
<![CDATA[Moh. Fawaid]]>
<![CDATA[ TURBO [Tulisan Riset Berbasis Online] Vol 12, No 1 (2023): Jurnal TURBO ]]>
Publisher : <![CDATA[Universitas Muhammadiyah Metro ]]>
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DOI: 10.24127/trb.v12i1.2444
<![CDATA[Bamboo is a natural material that is widely found in South Banten. Using bamboo as an alternative material for manufacturing brake pads is interesting to research. Bamboo resistance to attacks of organisms is so low that it is necessary to give initial treatment. Preservation of bamboo sticks is done by soaking them in seawater. This immersion is determined for 15 and 30 days. The comparison of the composite constituent composition is 30% bamboo fiber, 28% bamboo particles, 2% zinc, and 40% epoxy resin. Compaction pressure is carried out by 400 kg/cm2 for 10 minutes. The sintering process is carried out at a temperature of 150 °C for 60 minutes. From this research, it is known that the immersion of bamboo stems in seawater tends to decrease the hardness and the wear rate of composites.]]>
<![CDATA[Preparation, Synthesis and Characterization of La(1-x)Sr(x)MnO3 Alloy ]]>
<![CDATA[Ramlan Ramlan]]>;
<![CDATA[Fatma Husaini]]>;
<![CDATA[Jan Setiawan]]>;
<![CDATA[Ferry Budhi Susetyo]]>;
<![CDATA[Hamdan Akbar Notonegoro]]>;
<![CDATA[Silviana Simbolon]]>;
<![CDATA[Dwi Nanto]]>;
<![CDATA[Yunasfi Yunasfi]]>
<![CDATA[ Journal of Applied Engineering and Technological Science (JAETS) Vol. 5 No. 2 (2024): Journal of Applied Engineering and Technological Science (JAETS) ]]>
Publisher : <![CDATA[Yayasan Riset dan Pengembangan Intelektual (YRPI) ]]>
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DOI: 10.37385/jaets.v5i2.3962
<![CDATA[Magnetic particles have been used for hyperthermia by inserting ferromagnetic material into tumor tissue. La(1-x)Sr(x)MnO3 is one of the best candidates for hyperthermia due to higher magnetic at ambient temperature and their Curie temperature easily adjusted. This research synthesized La(1-x)Sr(x)MnO3 using the ball milling technique. Several heat treatments were also conducted after ball milling processing. Various investigations, including SEM-EDS, XRD, DSC, and VSM, were conducted. LaMnO3 has a hexagonal structure, which has the space group R -3 c. From the diffraction pattern seen in LaMnO3 and La0.9Sr0.1MnO3 seen at angles 32.376 and 32.706, it looks separate like the database diffraction pattern. In La0.9Sr0.1MnO3, these two peaks are seen to be increasingly separated. In contrast to the diffraction patterns of La0.7Sr0.3MnO3 and La0.5Sr0.5MnO3 at an angle of 32.376, there is a decrease in intensity. The specific heat capacity of the alloy with Sr substitution of 0.3 has a greater value than that without substitution and the lowest occurs in the alloy with Sr substitution of 0.1. The magnetization value for Sr substitution is 0.3 higher than for other alloys.]]>
