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<![CDATA[Perancangan dan Pembuatan Mesin Bending dan Notching ]]>
<![CDATA[Muhammad Yanis]]>;
<![CDATA[gunawan]]>;
<![CDATA[Ricky Wahyu Pratama]]>
<![CDATA[ Jurnal Rekayasa Mesin Vol. 21 No. 1 (2021): Jurnal Rekayasa Mesin ]]>
Publisher : <![CDATA[Universitas Sriwijaya ]]>
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DOI: 10.36706/jrm.v21i1.72
<![CDATA[Bending and notching is a common process in manufacturing world as in vehicles chassis fabrication. But, the recent problem is the limited tools that needed to bend and notch pipes. The objective of this research is to fabricate a tool or production machine that could bend and notch pipes based on need by using three roll bending method. As for the notching angle of 0 to 60 and the diameter for notching cutting is 1 to 2 inch. There are some calculations on machine structure by using solidworks simulation such as stress analysis, von mises and factor of safety. There are three trials in bending process such as deflection from 1, 2 and 3 cm and on the other side, notching trials start from 0 to 60 . This notching and bending machine created with two functions. The bending process is conducted in the middle part while the notching process is in the top part of the machine. This machine has 70 cm length, 50 cm wide and 120 cm height and the total amount of cost spent for this machine is Rp. 9.009.500.]]>
<![CDATA[Analisa Sifat Mekanik pada Komposit 86 Al 1020 – 12 Fly Ash – 2 Mg yang Dibuat dengan Proses Direct Melt Oxidation (DIMOX) ]]>
<![CDATA[Qomarul Hadi]]>;
<![CDATA[Ahmad Sumadi]]>
<![CDATA[ Jurnal Rekayasa Mesin Vol. 21 No. 1 (2021): Jurnal Rekayasa Mesin ]]>
Publisher : <![CDATA[Universitas Sriwijaya ]]>
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DOI: 10.36706/jrm.v21i1.76
<![CDATA[This study aims to analyze the mechanical properties of composite with a composition of 86% aluminum 1020, 12% fly ash and 2% magnesium, the three composite materials are combined in a furnace with the Direct Melt Oxidation method, after the melting process with a temperature of 900oC and the holding time varying 4 hours , 5 hours and 6 hours. Later, the Brinell hardness tester, at K4 the average value of BHN was 49.00816 kgf / mm, K5 the average value of BHN was 51.80066 kgf / mm and K6 the average value of BHN was 56.64983 kgf / mm. In the observation of Scaning Electron Microscope K6 specimens that have the best pores, changes in the microstructure of these composites are increasingly visible on the 5000x magnification observation. This is due to the holding time which helps the infiltration process in the interface reaction between the liquid and solid phases, and the user of this holding time is due to the metal's wetting ability and the slow and time-consuming infiltration process. to get a more even mixture.]]>
<![CDATA[Analisis Parameter Pemesinan pada Proses Side Milling Baja AISI 1045 Menggunakan Response Surface Methodology (RSM) ]]>
<![CDATA[Arif Afriansyah]]>;
<![CDATA[Muhammad Yanis]]>
<![CDATA[ Jurnal Rekayasa Mesin Vol. 21 No. 1 (2021): Jurnal Rekayasa Mesin ]]>
Publisher : <![CDATA[Universitas Sriwijaya ]]>
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DOI: 10.36706/jrm.v21i1.88
<![CDATA[Surface roughness is one of the criteria for determining machining quality. This parameter is influenced by machining parameters such as cutting speed (Vc), motion feed (fz) and radial depth of cut (ar). The material is processed using side milling with down milling feeding direction. The results of the milling process are measured with a surface roughness tester by taking the roughness arithmetic (Ra) value as the roughness value. Surface roughness prediction is done using response surface methodology (RSM). RSM was chosen as a quantitative approach based on experimental and modeling data. The number of data retrieval in this study were 16 experimental data for 3 machining parameters. Surface roughness modeling of AISI 1045 milling by Quadratic response surface methodology showed significant model results. Evidenced by the F-Value of 5.61 and P-Value of 0.0241. P-Value was <0.05 means that the model is significant. The mean square error mean in this study also showed good results in the amount of 0.0091 and an average error of 0.122%. The effect of cutting speed on roughness is the higher the cutting speed will produce a smooth roughness value, while the effect of feeding motion and feeding depth on roughness is directly proportional, the higher the value of feeding motion and the depth of feeding, the coarser the roughness score will be.]]>
<![CDATA[Analisis Kerusakan pada Bushing Apron Feeder ]]>
<![CDATA[abraham hutabarat]]>;
<![CDATA[Nurhabibah Paramitha Eka Utami]]>;
<![CDATA[Diah Kusuma Pratiwi]]>
<![CDATA[ Jurnal Rekayasa Mesin Vol. 21 No. 2 (2021): Jurnal Rekayasa Mesin ]]>
Publisher : <![CDATA[Universitas Sriwijaya ]]>
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DOI: 10.36706/jrm.v21i2.135
<![CDATA[The mining industry, especially coal mining, has a transportation and delivery process from one location to another. In the transportation process, there are usually obstacles caused by damage to components that can hinder the delivery process. One of the transportation equipment that often fails is the Apron Feeder. The work process that works continuously and repeated loading can damage the components on the Apron Feeder, one of the components that are often damaged is the Bushing. This study aims to analyze and determine the causes of damage to the Apron Feeder Bushing. The method of this research is by looking at the microstructure of the material, the hardness value of the material, seeing surface defects using a dye penetrant. With the results obtained, namely the number of defects in the form of scratches and porosity in good Bushings which can be the cause of damage to the Bushings and on damaged Bushings, there is martensite which shows that the Bushing is deformed and brittle which results in operations which can be the cause of damage to the Bushing and the results of XRF testing ( X-Ray Fluorescence) the composition of the material on the Bushing is made of AISI 4140 where there is a difference in composition in the original specification of the material, namely SCM 415.]]>
<![CDATA[Analisis Kerusakan pada Chain Link Apron Feeder ]]>
<![CDATA[Muhammad Surya Netrane Jagad Jagad]]>;
<![CDATA[Nurhabibah Paramitha Eka Utami]]>;
<![CDATA[Diah Kusuma Pratiwi]]>
<![CDATA[ Jurnal Rekayasa Mesin Vol. 21 No. 2 (2021): Jurnal Rekayasa Mesin ]]>
Publisher : <![CDATA[Universitas Sriwijaya ]]>
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DOI: 10.36706/jrm.v21i2.140
<![CDATA[The use of an Apron feeder with a carrying capacity of 90 tons with a motor with a power of 55 KW and engine speed of 1500 RPM as a container for coal unloading results in train cars and then distributed to a belt conveyor for 24 hours. Based on Standard Operating Procedures (SOP), the apron feeder can accommodate 8 train carriages for 120 minutes of unloading coal. This process initiates the possibility of fatigue in the Apron feeder component, namely the chain link. This study aims to determine the cause of chain link damage in terms of micro structure and strength to the value of hardness by using chain link analysis samples from PT. Acid Hill. Metallographic testing showed the presence of a banded structure in the new sample and the presence of a martensite phase in the damaged sample material, causing the material to become stronger but brittle.]]>
<![CDATA[Analisis Penjejak Lintasan Mobile Robot dengan Pengendali Gerak Menggunakan Bluetooth ]]>
<![CDATA[Zulkarnain Zulkarnain]]>;
<![CDATA[Ismail Thamrin]]>;
<![CDATA[Astuti Astuti]]>;
<![CDATA[Marwani Marwani]]>;
<![CDATA[Ellyanie Ellyanie]]>;
<![CDATA[Dimas Prayoga Pamungkas]]>
<![CDATA[ Jurnal Rekayasa Mesin Vol. 21 No. 2 (2021): Jurnal Rekayasa Mesin ]]>
Publisher : <![CDATA[Universitas Sriwijaya ]]>
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DOI: 10.36706/jrm.v21i2.155
<![CDATA[This research was carried out aiming to see the temperature around the occurrence of natural disasters using temperature and humidity sensors that were used as robot eyes, and bluetooth sensors were used to control the robot car by connecting with android as a controller. The benefit of this research is to make it easier for the SAR team to search for victims of natural disasters and make time more efficient and reduce the risk of accidents for the SAR team. The research method used is qualitative with testing documentation techniques carried out and recording the data obtained. From the results of this study, it was found that the sensor used can see the ambient temperature and humidity and the bluetooth sensor control distance reaches 140 meters.]]>
<![CDATA[Analisis Aliran Udara Alat Penghemat Energi Vertikal Generasi Kedua untuk Masyarakat Tebing Gerinting Kecamatan Indralaya Selatan Kabupaten Ogan Ilir ]]>
<![CDATA[darmawi darmawi]]>;
<![CDATA[Qomarul Hadi]]>;
<![CDATA[Ellyanie]]>;
<![CDATA[Irwin Bizzy]]>
<![CDATA[ Jurnal Rekayasa Mesin Vol. 21 No. 2 (2021): Jurnal Rekayasa Mesin ]]>
Publisher : <![CDATA[Universitas Sriwijaya ]]>
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DOI: 10.36706/jrm.v21i2.156
<![CDATA[Alat Penghemat Energi Vertikal which is the patent rights of Sriwijaya University with identity number of IDP 000065109 is already developed in order to raised up the efficiency and the effectivity as energy saver and as heat and exhaust gas eliminator to prevent the users for health and comfortable matters. This product is now called Alat Penghemat Energi Vertikal Generasi Kedua (APEV-2). Among the improvements are the legs of APEV-2 is now made of steel, the base flat is also made of steel. The front air window area is decreased and the rack window binder and air hole at the bottom of the APEV-2.]]>
<![CDATA[Pengaruh Pembebanan Terhadap Waktu pada Kopling Dua kumulator sebagai Sumber Daya Listrik Cadangan ]]>
<![CDATA[Cekmas Cekdin]]>;
<![CDATA[Siti Sailah]]>
<![CDATA[ Jurnal Rekayasa Mesin Vol. 21 No. 2 (2021): Jurnal Rekayasa Mesin ]]>
Publisher : <![CDATA[Universitas Sriwijaya ]]>
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DOI: 10.36706/jrm.v21i2.161
<![CDATA[The use of accumulators so far as an energy source is only in an emergency situation and is limited by the time of use. The tool is called an Uninterruptible Power Supply (UPS). The way of the tool works is ineffective and unreliable, so there there needs to be a new innovation that can be used at any time and is not limited to the time of use. The results of the study present the coupling of two accumulators as a backup power source as an alternative provider of the main energy source that can provide a way out in the event of interference from PLN, and work for a relatively long time. Coupling of Two Accumulators as a backup power source begins with determining the characteristics of each component such as accumulators, inverters, rectifiers, current booster circuits, and voltage sensors. The next step is to determine the maximum loading for the system to work long enough. Furthermore, it is analyzed carefully and in a long time so that the design results is really suitable for use as a coupling of two accumulators as a reliable backup power source]]>
<![CDATA[Studi Eksperimental Turbin Darrieus Dengan Sudu Overlap ]]>
<![CDATA[Kaprawi Sahin]]>;
<![CDATA[Fajri Prawira]]>
<![CDATA[ Jurnal Rekayasa Mesin Vol. 20 No. 1 (2020): Jurnal Rekayasa Mesin ]]>
Publisher : <![CDATA[Universitas Sriwijaya ]]>
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DOI: 10.36706/jrm.v20i1.208
<![CDATA[The need for energy is needed at this time. Energy is useful for daily life that can be utilized in human survival. For that we need energy that can be utilized by humans, one of them is wind energy. The Darrieus turbine is a vertical axis wind turbine (VAWT) wind turbine that has high efficiency and is capable of producing large enough torque at high wind speeds and rotations. The working principle of the darrieus turbine utilizes wind that blows the blades where the turbine can rotate with high wind speeds, and does not have good self starting so that assistance is needed at low wind speeds. the purpose of this study is the utilization of overlap on the darrieus blade can rotate low wind speeds and have a good self starting. The darrieus blade study was used only in wind tunnels with a blade thickness of 20 mm, width of 50 mm and blade length of 200 mm. The range of wind speeds used in the wind tunnel ranges from 7 m / s, 9 m / s, 11 m / s. Overlap research conducted with a distance of 4 mm blade.]]>
