ROTOR: JURNAL ILMIAH TEKNIK MESIN
ROTOR merupakan jurnal yang diterbitkan oleh Jurusan Teknik Mesin Universitas Jember yang memuat artikel ilmiah dalam bidang Konversi Energi, Design/Perancangan, Teknik Produksi, Material serta bidang lain yang terkait dengan Teknik Mesin. Semua naskah yang diterima ROTOR diterbitkan secara global dalam bentuk elektronik. Hasil penelitian yang diterbitkan dalam jurnal ini diharapkan dapat menambah khasanah pengetahuan di bidang Teknik Mesin serta menjadikan sarana bagi para profesional baik dari dunia usaha, pendidikan, ataupun peneliti untuk menyebarluaskan perkembangan ilmu pengetahuan dan teknologi di bidang Teknik Mesin melalui publikasi hasil penelitian.
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<![CDATA[ANALISIS OVERALL EQUIPMENT EFFECTIVENESS (OEE) PADA MESIN CNC CUTTING ]]>
<![CDATA[Hidayat Hidayat]]>;
<![CDATA[Moh. Jufriyanto]]>;
<![CDATA[Akhmad Wasiur Rizqi]]>
<![CDATA[ ROTOR Vol 13 No 2 (2020) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Fakultas Teknik Universitas Jember ]]>
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DOI: 10.19184/rotor.v13i2.20674
<![CDATA[PT PAL Indonesia (Persero) is one of the state-owned industries and manufactures engaged in the maritime sector. This company has production equipment complete enough to carry out its production of ship components. There is a problem in this machine, it can be seen by the frequency of damage that occurs to machines or equipment due to the damage so that the production target is sometimes not achieved. Another consequence caused by damage to machines or equipment is in terms of the quality of the resulting product, where products that do not comply with quality standards will be reprocessed. Increasing production efficiency at this company is to measure the effectiveness of CNC Cutting machines using the OEE (Overall Equipment Effectiveness) method. The results of this study suggest that the company should pay more attention to factors of use of production time, work according to standards, operator knowledge, and maintenance of machines. By paying attention to these factors, it is expected that the company's productivity will increase and the production process will run effectively and efficiently.]]>
<![CDATA[SIMULASI LENSA GRATING TERHADAP EFISIENSI DIFRAKSI GRATING PADA SISTEM PEMISAH CAHAYA SPEKTRAL CONCENTRATED PHOTOVOLTAIC/THERMAL ]]>
<![CDATA[Yuke Hary Laksono]]>;
<![CDATA[Okasatria Novyanto]]>
<![CDATA[ ROTOR Vol 13 No 1 (2020) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Fakultas Teknik Universitas Jember ]]>
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DOI: 10.19184/rotor.v13i1.18302
<![CDATA[A spectral beam splitting concentrated photovoltaic/thermal (SBS CPVT) system is a new technology in PV areas . In order to split the sunlight, the grating lens is used in this study. The tool of this study is G-Solver software which simulates the diffraction efficiency of visible light and infrared light of the blazed and binary grating lens. The aim of this paper is to analyze the potential of the diffraction efficiency of grating lens when applied in SBS CPVT. The result show that binary grating, the highest diffraction efficiency for the visible light is also almost unchanged for the aspect ratio from 1.4 to 2, but the peak wavelength shift from around 360 nm to 510 nm, while, for IR light, the diffraction efficiency decrease from aspect ratio 1.4 to 2. On the other hand, blazed grating, The highest diffraction efficiency for the visible light is almost unchanged for the aspect ratio from 1.4 to 2, but the peak wavelengths shift from around 350 nm to 500 nm. While IR light, the diffraction efficiency decrease with the aspect ratio 1.4 to 2]]>
<![CDATA[ANALISIS UNJUK KERJA COOLING TOWER INDUCED DRAFT COUNTER FLOW DENGAN BAHAN PENGISI ASBES ]]>
<![CDATA[Fachriza Putra Pratama]]>;
<![CDATA[Digdo Listyadi Setyawan]]>;
<![CDATA[Mochamad Edoward Ramadhan]]>
<![CDATA[ ROTOR Vol 14 No 1 (2021) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Fakultas Teknik Universitas Jember ]]>
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DOI: 10.19184/rotor.v14i1.24224
<![CDATA[Industrial development is one of the economic components that influences national economic growth. Increased industrial growth is also aimed at realizing national goals for the welfare of society. In the industrial process, the machine generates heat as a side effect of the machine's work, so it requires a cooling system for its continued work. The facilities used by the industry to overcome these problems are by using cooling towers. One of the factors that influence the cooling tower performance is the filler. Asbestos is a material that has a thin and corrugated sheet shape. This material is made of the mineral silica and fine fibers. Asbestos material has many benefits and roles in industrial activities. The purpose of this study was to determine the effect of asbestos filler on cooling tower performance induced draft counter flow on the effect of variations in initial water temperature and air velocity, and the effect of effectiveness, water-air ratio, cooling capacity, evaporation loss and L / G value. This research on the performance of cooling towers with asbestos fillers obtained a higher value of effectiveness and cooling capacity than cooling towers without using fillers. This is evidenced by the highest value of effectiveness obtained by cooling towers using fillers of 83.26%, while the highest value for cooling towers without using fillers is 80.24%. The highest value of cooling capacity in a cooling tower using filler material is 10.34 kJ / s, while the highest value for a cooling tower without using a filler is 9.70 kJ / s. Keywords: Asbestos, Cooling tower, Industry]]>
<![CDATA[PENGARUH TEMPERATUR PEMANASAN DAN WAKTU HOLDING SERAT DAUN NANAS TERHADAP KEKUATAN IMPACT KOMPOSIT EPOXY DENGAN METODE VACUUM INFUSION ]]>
<![CDATA[Mohamad Irkham Mamungkas]]>;
<![CDATA[Nur Subeki]]>;
<![CDATA[M. Ulul Albab]]>
<![CDATA[ ROTOR Vol 14 No 1 (2021) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Fakultas Teknik Universitas Jember ]]>
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DOI: 10.19184/rotor.v14i1.22076
<![CDATA[Technological developments, especially in the material sector, have led to new discoveries, one of which is the composite type material. Composites have been widely used in the automotive industry, both for exterior and interior. This is what encourages research on composites to continue to be developed. This study aims to determine the effect of heating temperature and heating time on pineapple leaf fibers on the impact strength using the vacuum infusion method. The temperature variations given are 70 °C, 80 °C, and 90 °C. While the variation of drying time is 1 hour, 2 hours, and 3 hours. Composite material manufacturing refers to ASTM D5942-96 standard. The results of this study indicate that the highest impact value occurs in specimens with a heating temperature variation of 80 ° C with a heating time of 3 hours, which is 0.075 Joules / mm². While the lowest impact strength occurs in specimens with a heating temperature of 70 ° C with a heating time of 2 hours, which is 0.01943 Joules / mm².]]>
<![CDATA[PENGARUH TEMPERATURE, HOLDING TIME, DAN PENAMBAHAN Sn TERHADAP CACAT SHRINKAGE PADA PROSES SINTERING METAL INJECTION MOLDING AL-PP ]]>
<![CDATA[Ahmad Rendi Maulana]]>;
<![CDATA[Danang Yudistiro]]>;
<![CDATA[Mochamad Asrofi]]>
<![CDATA[ ROTOR Vol 14 No 1 (2021) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Fakultas Teknik Universitas Jember ]]>
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DOI: 10.19184/rotor.v14i1.19689
<![CDATA[Metal injection molding (MIM) is a relatively recent technological process used in the powder metallurgy industry, which is highly efficient and useful for the manufacture of large quantities of small and complex metal components. MIM consists of four basic steps consisting of mixing, injection molding, debinding, and sintering. Sintering to compact and increase the strength of metal powders and experience shrinkage (shrinkage). The purpose of this study was to determine the optimal combination of the MIM sintering process for the proportion of shrinkage defects by adding parameters Sn (%), temperature (℃), and holding time (hours). This study used an experimental design with the Taguchi method. The contribution factor obtained that the addition of the Sn parameter did not have a significant effect on the shrinkage of 14.48%, the temperature parameter had a significant effect on the shrinkage proportion of 68.92%, and the holding time parameter did not have a significant effect on the proportion of depreciation with a percentage of 6.27%. From the results, the optimal combination is the addition of Sn at level 3 (2%), the temperature at level 1 (450 ℃), and holding time at level 1 (1 hour).]]>
<![CDATA[ANALISIS GRAFIS GERAKAN SENDI TERHADAP POROS VERTIKAL TULANG BELAKANG PENARI BAPANG MALANGAN ]]>
<![CDATA[Teguh Sasmito]]>;
<![CDATA[Gatot Soebiyakto]]>;
<![CDATA[Nurida Finahari]]>
<![CDATA[ ROTOR Vol 14 No 1 (2021) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Fakultas Teknik Universitas Jember ]]>
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DOI: 10.19184/rotor.v14i1.24220
<![CDATA[Injuries in dancing activities can occur while practicing or during performance. Repetitive movements can be a major cause of injury when dancing. One of the injuries that can be fatal is spinal cord injury. The clinical manifestations of injury to the spine arise based on the location of the trauma. This study aims to identify potential movements that can cause spinal cord injury from the Bapang Malangan Dance. This potential is viewed from the movements that have a rotational effect on the spinal cord. The research was conducted by imitating several dance movements that were considered to have the potential to cause rotational motion in the spine. The measurement results of the spine rotational angle are used as the basis for carrying out kinematic and dynamic analysis. The degree of potential injury arising from movement is referred to at the normal allowable angle. From the results of the study, it is known that the area of the neck segment from the spinal line of Bapang Malangan dancers is a potentially injury critical area. This is related to the rotation angle that occurs (50-60o) exceeds the maximum limit of normal rotation (45o). The load that works at the point of rotation is the weight of the head which act as pendulum with a combination of compressive effects. The development of research can be directed to the dynamic effects of dance movements, focusing on the study of modes of motion 2 that produce rotational changes in the entire spinal line, studying the combined effects of other body parts, and considering the dancer's skill.]]>
<![CDATA[ANALISIS KERUSAKAN MESIN AHU MENGGUNAKAN PENDEKATAN METODE FAILURE MODE AND EFFECT ANALYSIS ]]>
<![CDATA[Muhamad Ikhsan Ramadhan]]>;
<![CDATA[Jojo Sumarjo]]>;
<![CDATA[Farradina Choria Suci]]>;
<![CDATA[Deri Teguh Santoso]]>
<![CDATA[ ROTOR Vol 14 No 2 (2021) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Fakultas Teknik Universitas Jember ]]>
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DOI: 10.19184/rotor.v14i2.26460
<![CDATA[The manufacturing industry is currently experiencing rapid development from various aspects. This aspect develops, it is increasingly necessary to find solutions to get more effective and efficient results. The Air Handling Unit (AHU) machine is a heat exchanger between cold water and air. The method used to identify the damage is the Failure Mode and Effect Analysis (FMEA) method. With this method, it is hoped that the point of damage that occurs can be known and can be planned for further maintenance. The results of the analysis of the FMEA method were obtained from related fields regarding the damage to the AHU engine components. Based on the results of the analysis of the Pareto diagram, it can be seen that there are several types of damage that dominant in the Air Handling Unit engine, namely; Motors & blowers; Pipe; Air Filter; Spray Nozzles. According to the principle of the Pareto diagram, which is 80/20, it means that 80% of damage to the machine is caused by 20% of the causes of damage. In this case damage the motor & blower, pipelines, air filters must be prioritized for maintenance so that the quality and efficiency of the engine is getting better.]]>
<![CDATA[PENGARUH TIPE SALURAN PENGECORAN TERHADAP SIFAT MEKANIK DAN STRUKTUR MIKRO ALUMINIUM AL 6061 DENGAN METODE SAND CASTING ]]>
<![CDATA[Heni Hendaryati]]>;
<![CDATA[Mohamad Irkham Mamungkas]]>
<![CDATA[ ROTOR Vol 14 No 2 (2021) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Fakultas Teknik Universitas Jember ]]>
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DOI: 10.19184/rotor.v14i2.22086
<![CDATA[Industrial technology is developing very rapidly, one of which is in the field of metal casting. In the foundry case, aluminum is one of the most used types. It happen because of aluminum has many advantages than other types of metal, likely: good corrosion resistance, relatively high mechanical properties, and good formability. The purpose of this study was to determine the effect of variations in the duct system on the tensile strength and impact strength of Al 6061 aluminum using the sand casting method. A variation of this line system was to use a direct line, split line, and split line with an adder. From the results of the study, it was found that the ultimate tensile strength occurred in the specimens using a split channel pattern with an adder, which was 120.25 MPa, while the lowest tensile strength occurred in the specimens using a direct channel pattern which was 65,49 MPa. This also occurs for the highest impact value in the variation of the split pattern system with addition of 0.0081 J/mm2 and the lowest impact value is using the direct channel pattern which results in an impact value of 0.005508 J/mm2]]>
<![CDATA[KARAKTERISTIK KEBULATAN TERHADAP PARAMETER PROSES PEMBUBUTAN PADA MATERIAL ST 42 MENGGUNAKAN METODE TAGUCHI DAN ANOVA ]]>
<![CDATA[Hendri Van Hoten]]>;
<![CDATA[Rijalul Rahman Hakim]]>;
<![CDATA[Helmizar Helmizar]]>;
<![CDATA[Nurbaiti Nurbaiti]]>
<![CDATA[ ROTOR Vol 14 No 2 (2021) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Fakultas Teknik Universitas Jember ]]>
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DOI: 10.19184/rotor.v14i2.27380
<![CDATA[This research is about the roundness characteristics of the turning process parameters on St 42 material using the Taguchi and ANOVA (Analysis of Variance) methods. A cylindrical product requires a good roundness value to ensure its quality. One of the factors that determine the quality of these products is the machining process parameters. In this study, optimization of the turning process parameters using the Taguchi and ANOVA methods was carried out on the roundness characteristics of the workpiece. The workpiece used is Steel St 42. The lathe used is the Krisbow Precision Gear Head Machine 410X1000MM. After data analysis using the Taguchi method, the parameters with the optimum roundness value of 7.385 µm were 510 rpm spindle rotation, 1mm depth of cut, and coolant opening valve. The results of the ANOVA analysis show the percent contribution of each parameter, respectively, as follows: spindle rotation 26.97%, depth of cut 24.82%, and coolant 38.63%.]]>
<![CDATA[IDENTIFIKASI SURFACE RUBBER COVER UNIT INSERT MACHINE BILLING STATEMENT UNTUK MEMINIMALISIR LAJU KEGAGALAN ]]>
<![CDATA[Amam Fachrur Rozie]]>;
<![CDATA[Sumadi Sumadi]]>
<![CDATA[ ROTOR Vol 14 No 2 (2021) ]]>
Publisher : <![CDATA[Jurusan Teknik Mesin Fakultas Teknik Universitas Jember ]]>
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DOI: 10.19184/rotor.v14i2.26976
<![CDATA[A rubber cover flyerroll on an insert machine that has been operating for 3600 hours and is damaged, so an analysis is needed to determine the cause of the damage and a process to overcome the damage and the same failure occurs in the future. This flyer roll functions as a billing statement folder before being inserted into an envelope with dimensions of 28 mm (OD) x 284 mm (L). To find out the cause of the damage, several tests were carried out, namely destructive testing and chemical composition testing. Physical tests carried out include hardness test, tensile strength test, modulus test, elongation break test, density test, and abrasion resistance test. resistance test) and in this study a chemical composition test was conducted. From the test results, it can be seen that the hardness value is still within the tolerance limit, which is 94 shore A with a tensile strength value of 31.7 N/mm2 and the results of the chemical composition are dominated by polyurethane rubber at 62.9% and polystar at 23%. So from the tests that have been carried out, it can be concluded that the cause of the damage that occurs to the rubber cover flyer roll is caused by improper maintenance methods, machine maintenance that is not carried out and standard operational procedures (SOPs) that are not carried out according to the recommended maintenance process]]>
