Articles
<![CDATA[The Effect of Hold Time Variation in the Annealing Process To Mechanical Properties and Microstructure of Austenitic Manganese Steel ]]>
<![CDATA[Ilham Azmy]]>;
<![CDATA[Albert Daniel Saragih]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 10, No 2 (2020) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[Manganese steel is a special alloy steel which has good mechanical properties, especially high ductility and toughness values. This steel has high work hardening capability so it will be easy to engineer. In industrial applications, this steel is susceptible to a decrease in the value of its mechanical properties such as the hardness value due to continuous loading. From these problems, a steel engineering process is needed in order to significantly improve the mechanical properties of steel so that it has good durability and lifetime. This study aims to determine the effect of holding time of heat annealing treatment process on the microstructure and mechanical properties of austenitic manganese steel. This research was conducted by heating the annealing process at a temperature of 1000 oC with four variations of holding time for 0, 40, 80, and 120 minutes. After the austenitic manganese steel specimen is heated for a certain time, it is then subjected to very high temperature cooling (in the furnace). The steel specimen is then prepared for metallographic testing and mechanical properties (hardness) testing. Metallographic testing is carried out to be able to analyze the microstructure formed in the austenitic manganese steel specimens after undergoing annealing process. From the metallography results, it was found that the effect of holding time on the annealing process affected carbide precipitation at the grain boundaries in the austenite matrix of manganese steel specimens. In the annealing process with a holding time of 80 minutes, the austenitic manganese steel showed a microstructure with perfect carbide precipitation at the grain boundaries so that this would have an effect on a significant increase in the hardness value. From the results of the hardness test, it was also found that the hardness value of steel specimens by annealing process for 80 minutes was 39.5 HRc. Thus, the effect of the optimal holding time of the annealing heat treatment process to improve the microstructure and mechanical properties (hardness value) is 80 minutes]]>
<![CDATA[Effect of Chromium Doping to Hardness Properties in the Manufacture of Spur Gears Made from Ferrous Powder ]]>
<![CDATA[Albert Daniel Saragih]]>;
<![CDATA[Slamet Sutjipto]]>
<![CDATA[ Jurnal Teknik Mesin (JTM) Vol 10, No 2 (2020) ]]>
Publisher : <![CDATA[LP2M - Institut Teknologi Padang ]]>
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<![CDATA[A gear is a part of a machine that has a very complex shape so that it requires special care and expertise in the manufacturing process. Powder metallurgy offers an efficient manufacturing process for the production of these complex machining parts. In this study, Cr metal powder was selected to increase the hardness properties of spur gears made from iron (Fe) powder. Doping Cr by 0%; 0.5%; 10%, 1.5% and 2.0% will be added in gear manufacturing. Water is used as a binder with a ratio of 1:15 which is then packed by 15,000 kg or 15 tons then heated or sintered at a temperature of 1200 oC for 1 hour. The shrinkage ratio of the sample to the sintering treatment averaged 4.6%. 0.2 kg of load applied to the Vickers hardness test. Vickers hardness values obtained were 60, 77, 90, 184 and 211 respectively for the Cr doping of 0%; 0.5%; 10%, 1.5% and 2.0%. From these data it is found that the addition of the element Cr increases the hardness properties of iron gears. The hardness value shown is still too small, this is because there is still a lot of porosity generated in the sintering process because it is not in a vacuum condition.]]>
<![CDATA[PERANCANGAN ALAT PEMOTONG BAKSO MENGGUNAKAN SISTEM PENEKAN MANUAL KAPASITAS 0,8 KG UNTUK INDUSTRI RUMAH TANGGA ]]>
<![CDATA[Albert Daniel Saragih]]>;
<![CDATA[Ahmad Fauzi Hamidi]]>;
<![CDATA[Sckolastika Ninien Henny]]>
<![CDATA[ AL-JAZARI JOURNAL SCIENTIFIC OF MECHANICAL ENGINEERING Volume 7, Nomor 1, Mei 2022 ]]>
Publisher : <![CDATA[Universitas Islam Kalimantan Muhammad Arsyad Al Banjari ]]>
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DOI: 10.31602/al-jazari.v7i1.7101
<![CDATA[Usaha penjualan bakso dari waktu ke waktu mengalami peningkatan pesanan dari konsumen, sehingga pembuatan produksi bakso mengalami kenaikan permintaan dari masyarakat. Keripik bakso goreng atau camilan bakso yang dipotong tipis-tipis yang sering disebut dengan nama basreng, merupakan Usaha Mikro Kecil Menengah (UMKM). Salah satu permasalahan dalam UMKM atau industri rumahan tersebut adalah memenuhi permintaan konsumen yang banyak dengan waktu yang efisien. Maka solusi untuk permasalahan tersebut adalah dengan adanya alat pemotong bakso yang menggunakan sistem press manual. Alat pemotong bakso ini memiliki dimensi 840 x 640 x 420 (mm) dengan menggunakan sistem penekan manual dimana tuas sebagai tumpuan utama alat. Bakso diletakan diatas meja yang sudah dipasang pisau pemotong pada bagian bawah meja. Lalu tuas ditekan menggunakan tenaga manusia yang akan mengarahkan pendorong sebagai penekan menuju mata pisau yang sudah dipasang pada bagian bawah meja, dan bakso terpotong menjadi balok-balok tipis dengan ukuran 9x9 mm. Kelebihan alat ini adalah waktu pemotongan bakso dapat menghemat waktu juga dapat dilakukan dengan skala banyak (mass production) dibandingkan dengan pisau dapur]]>
<![CDATA[The Effect of Hold Time Variation in the Annealing Process To Mechanical Properties and Microstructure of Austenitic Manganese Steel ]]>
<![CDATA[Ilham Azmy]]>;
<![CDATA[Albert Daniel Saragih]]>
<![CDATA[ Jurnal Teknik Mesin Vol 10 No 2 (2020): Jurnal Teknik Mesin Vol.10 No.2 October 2020 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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DOI: 10.21063/jtm.2020.v10.i2.97-101
<![CDATA[Manganese steel is a special alloy steel which has good mechanical properties, especially high ductility and toughness values. This steel has high work hardening capability so it will be easy to engineer. In industrial applications, this steel is susceptible to a decrease in the value of its mechanical properties such as the hardness value due to continuous loading. From these problems, a steel engineering process is needed in order to significantly improve the mechanical properties of steel so that it has good durability and lifetime. This study aims to determine the effect of holding time of heat annealing treatment process on the microstructure and mechanical properties of austenitic manganese steel. This research was conducted by heating the annealing process at a temperature of 1000 oC with four variations of holding time for 0, 40, 80, and 120 minutes. After the austenitic manganese steel specimen is heated for a certain time, it is then subjected to very high temperature cooling (in the furnace). The steel specimen is then prepared for metallographic testing and mechanical properties (hardness) testing. Metallographic testing is carried out to be able to analyze the microstructure formed in the austenitic manganese steel specimens after undergoing annealing process. From the metallography results, it was found that the effect of holding time on the annealing process affected carbide precipitation at the grain boundaries in the austenite matrix of manganese steel specimens. In the annealing process with a holding time of 80 minutes, the austenitic manganese steel showed a microstructure with perfect carbide precipitation at the grain boundaries so that this would have an effect on a significant increase in the hardness value. From the results of the hardness test, it was also found that the hardness value of steel specimens by annealing process for 80 minutes was 39.5 HRc. Thus, the effect of the optimal holding time of the annealing heat treatment process to improve the microstructure and mechanical properties (hardness value) is 80 minutes.]]>
<![CDATA[Effect of Chromium Doping to Hardness Properties in the Manufacture of Spur Gears Made from Ferrous Powder ]]>
<![CDATA[Albert Daniel Saragih]]>;
<![CDATA[Slamet Sutjipto]]>
<![CDATA[ Jurnal Teknik Mesin Vol 10 No 2 (2020): Jurnal Teknik Mesin Vol.10 No.2 October 2020 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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DOI: 10.21063/jtm.2020.v10.i2.109-113
<![CDATA[A gear is a part of a machine that has a very complex shape so that it requires special care and expertise in the manufacturing process. Powder metallurgy offers an efficient manufacturing process for the production of these complex machining parts. In this study, Cr metal powder was selected to increase the hardness properties of spur gears made from iron (Fe) powder. Doping Cr by 0%; 0.5%; 10%, 1.5% and 2.0% will be added in gear manufacturing. Water is used as a binder with a ratio of 1:15 which is then packed by 15,000 kg or 15 tons then heated or sintered at a temperature of 1200 oC for 1 hour. The shrinkage ratio of the sample to the sintering treatment averaged 4.6%. 0.2 kg of load applied to the Vickers hardness test. Vickers hardness values obtained were 60, 77, 90, 184 and 211 respectively for the Cr doping of 0%; 0.5%; 10%, 1.5% and 2.0%. From these data it is found that the addition of the element Cr increases the hardness properties of iron gears. The hardness value shown is still too small, this is because there is still a lot of porosity generated in the sintering process because it is not in a vacuum condition.]]>
<![CDATA[Manufacturing Technique of Aluminum Plate Waste Crusher ]]>
<![CDATA[Imadudin Abdurohim]]>;
<![CDATA[Prasetyo]]>;
<![CDATA[Albert Daniel Saragih]]>
<![CDATA[ Jurnal Teknik Mesin Vol 11 No 2 (2021): Jurnal Teknik Mesin Vol.11 No.2 October 2021 ]]>
Publisher : <![CDATA[Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP ]]>
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DOI: 10.21063/jtm.2021.v11.i2.184-188
<![CDATA[With the increase in the amount of unused aluminum plate waste every year, it can increase environmental damage if no preventive measures are taken, so it must be done processing the unused plate waste by recycling. One of the recycling processes is by destroying it before it is thawed. The plate crusher is designed to have dimensions (861 mm x 250 mm x 910 mm), with the main power being an electric motor of 0.5 HP (0.37 kW) and a motor shaft rotation of 1400 rpm. The type of knife used has dimensions of 100 mm x 10 mm which have a disc-like shape that has 4 cutting blades at each end. The tool is designed to use two rotating shafts with 10 crushing blades placed on each part of the shaft. The crusher is designed using the Solidworks Application.]]>
<![CDATA[Pembuatan Mesin Tekuk Pelat Sistem Hidrolik Manual untuk Membuat Celah Berbentuk U ]]>
<![CDATA[Sckolastika Ninien]]>;
<![CDATA[Firhan Fadhlan Adzima]]>;
<![CDATA[Albert Daniel Saragih]]>;
<![CDATA[Prasetyo Prasetyo]]>
<![CDATA[ Jurnal Dinamika Vokasional Teknik Mesin Vol. 7 No. 2 (2022) ]]>
Publisher : <![CDATA[Department of Mechanical Engineering Education ]]>
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DOI: 10.21831/dinamika.v7i2.53325
<![CDATA[Diperlukan suatu alat khusus untuk membuat bentuk dengan ukuran yang tidak tentu dan tidak memiliki standar. Demikian halnya pada alat penekukan pelat bentuk U dengan ukuran celah yang kecil tidak dapat dibentuk dengan sekali proses oleh mesin khususnya yang terdapat di laboratorium Fabrikasi Politeknik Negeri Bandung, maka diperlukan alat penekuk pelat khusus untuk membuat celah berbentuk U. Mesin penekuk pelat ini berfungsi untuk mempermudah kerja pengguna serta untuk menunjang fasilitas praktikum di Laboratorium Fabrikasi dengan menggunakan sistem hidrolik. Alat ini dapat menekuk pelat dengan kapasitas maksimal 5 ton dan panjang pelat yang dapat ditekuk maksimum 500 mm dengan tebal maksimum 1,5 mm. Pelat yang akan dibentuk diletakan diatas U-die, kemudian dongkrak hidrolik di pompa hingga punch bergerak turun dan menekan pelat. Pembuatan mesin penekuk pelat dilakukan dengan mengukur kekuatan rangka dengan nilai faktor keamanan. Ukuran tinggi, panjang dan lebar alat penekuk pelat ini yaitu (1300 x 800 x 800) mm dan digunakan untuk membuat celah berbentuk U dengan diameter 20 mm serta panjang maksimal 500 mm.]]>
<![CDATA[Perancangan Alat Pemotong Tulang Daging Dengan Chainsaw Skala Industri Rumahan ]]>
<![CDATA[Albert Daniel Saragih]]>;
<![CDATA[Muhammad Rifqi Aliftyo]]>;
<![CDATA[Deni Mulyana]]>
<![CDATA[ Piston: Journal of Technical Engineering Vol 6, No 1 (2022) ]]>
Publisher : <![CDATA[Prodi Teknik Mesin ]]>
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DOI: 10.32493/pjte.v6i1.19493
<![CDATA[The technique of bones saw was used by many traders still uses the conventional method, namely with a butcher knife. To make cutting more efficient, bone saw machines are created which are widely marketed. However, the use of these tools is considered inefficient because during operation the meat attached to the bones will move into the machine through the cutting tool so that the motor work becomes heavy and even the cutting tools are prone to breaking, then the electrical power required is large enough to make traders use more conventional methods. This manufacturing technique aims to produce designs and working drawings of meat bone cutting machines and the components needed. Bone cutting machines are designed to be used by various groups of bone traders, market traders or home-based traders to increase production and use low electrical power. The machine was designed to be more efficient than the previous by modifying the cutting tool using a saw type, namely a chainsaw with a low electrical power of 550 Watt or equivalent to 0.75 HP and a blade speed of 2500 rpm. The machine was designed to use a spring to raise the machine automatically. The dimension of 800 mm × 700 mm × 1415 mm has double safety that is protected by a cover and a lever to provide distance between the machine and the operator.]]>
<![CDATA[Motions Analysis Investigation of a 12 Meter Catamaran Tourism Boat on Passenger Comfort Criteria Case Study "MV Garuda Ngelayang" ]]>
<![CDATA[Yeddid Yonatan Eka Darma]]>;
<![CDATA[Hery Inprasetyobudi]]>;
<![CDATA[Rochmad Eko Prasetyaning Utomo]]>;
<![CDATA[Galih Hendra Wibowo]]>;
<![CDATA[Ahmad Hidayat]]>;
<![CDATA[Albert Daniel Saragih]]>
<![CDATA[ International Journal of Marine Engineering Innovation and Research Vol 8, No 2 (2023) ]]>
Publisher : <![CDATA[Institut Teknologi Sepuluh Nopember ]]>
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DOI: 10.12962/j25481479.v8i2.16581
<![CDATA[Bangsring Beach is one of the leading tourist destinations in Banyuwangi Regency. Bangsring Beach which focuses on underwater tourism (Bangsring Underwater) is a coral reef-based tourism that can only be accessed by diving and snorkeling. But only in that way to enjoy Bangsring Underwater tourism, the construction of a 12 m catamaran with a bottom glass is carried out so that tourists who cannot dive and snorkel can enjoy the beauty of Bangsring Underwater. To ensure the comfort and safety of passengers, a simulation analysis of the movement of the existing 12-merter catamaran is carried out. This simulation was carried out with the general design of a catamaran modeled 1:1 with a LOA of 12 m, B 5.6 m, H 1.85 m, and Vs 10 knots. On the 1:1 ship, an exsisting process is carried out at each ship station to get a line plan for the Garufa Ngelayang ship then 3D modeling is carried out based on the reference from the line plan drawing. Ship motion simulations are carried out to determine the ship's response when hit by waves from various directions which are presented in the RAO (Response Amplitude Operator) graph using the CFD method which is based on a 3D model. Simulations were carried out with a wave height of 1.25 m in Bangsring waters with a fully loaded ship with a wave direction of 0o following sea; Stern Quarter 45o, 315o; Beam Sea 90o, 315o; Bow Quarter 135o, 225o; and Head Sea 180o. With a comfortable ship condition with 2.052 s of ship shaky period.]]>
<![CDATA[Perancangan Alat Pemotong Tulang Daging Dengan Chainsaw Skala Industri Rumahan ]]>
<![CDATA[Albert Daniel Saragih]]>;
<![CDATA[Muhammad Rifqi Aliftyo]]>;
<![CDATA[Deni Mulyana]]>
<![CDATA[ Piston: Journal of Technical Engineering Vol 6, No 1 (2022) ]]>
Publisher : <![CDATA[Prodi Teknik Mesin ]]>
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DOI: 10.32493/pjte.v6i1.19493
<![CDATA[The technique of bones saw was used by many traders still uses the conventional method, namely with a butcher knife. To make cutting more efficient, bone saw machines are created which are widely marketed. However, the use of these tools is considered inefficient because during operation the meat attached to the bones will move into the machine through the cutting tool so that the motor work becomes heavy and even the cutting tools are prone to breaking, then the electrical power required is large enough to make traders use more conventional methods. This manufacturing technique aims to produce designs and working drawings of meat bone cutting machines and the components needed. Bone cutting machines are designed to be used by various groups of bone traders, market traders or home-based traders to increase production and use low electrical power. The machine was designed to be more efficient than the previous by modifying the cutting tool using a saw type, namely a chainsaw with a low electrical power of 550 Watt or equivalent to 0.75 HP and a blade speed of 2500 rpm. The machine was designed to use a spring to raise the machine automatically. The dimension of 800 mm × 700 mm × 1415 mm has double safety that is protected by a cover and a lever to provide distance between the machine and the operator.]]>
