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ROTOR: JURNAL ILMIAH TEKNIK MESIN
Published by Universitas Jember
ISSN : 1979018x     EISSN : 24600385     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
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.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 6 Documents
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Search results for , issue "Vol 14 No 1 (2021)" : 6 Documents clear
PENGARUH MERK DAN RASIO CAMPURAN ANTI GORES TERHADAP KUALITAS HASIL PELAPISAN MATERIAL LOGAM ikhwanul Qiram; Fawaizul Umam; Adi Pratama
ROTOR Vol 14 No 1 (2021)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (392.168 KB) | DOI: 10.19184/rotor.v14i1.20642

Abstract

Paint is a liquid used to coat the surface of an object with the aim of decorative, reinforcing or protective of the material. Anti-scratch or varnish is a paint made from a hydrocarbon polymer without a color pigment. This study aims to determine the effect of the brand and the ratio of the anti-scratch mixture on the quality of the metal coating. The workpiece used is a 0.5 mm galvanized plate with a size of 10 cm x 10 cm. In this study, three variations of the ratio of anti-scratch and thinner mixtures will be carried out, namely 1: 1, 1: 1.25 and 1: 1.5 using the brands MTT, BLKT, WS. Spraying variations include spraying 1 sec (2x spraying), 2 secs (4x spraying), 3 sec (6x spraying). From the data collection process, two measurements will be taken, the first, the gloss test using a lux meter and a color density test. The gloss test was carried out by irradiating using three tilt angles, namely 50 °, 55 ° and 60 °. To test the color density using the Coolphptools Software. The highest gloss results occurred on the WS brand with a mixture ratio of 1: 1 resulting in a value of 9770 (lux) at an angle of 60 ° with a spray time of 2 seconds (4 times spray). The lowest yield occurred for the MTT brand producing a value of 4170 at an angle of 50 ° with a spray time of 3 seconds (6 times the spray). The results of this study generally show that the brand and the ratio of the anti-scratch mixture have an effect on the coating of metal materials
SIMULASI PENGARUH LUAS PERMUKAAN ELEKTRODA TERHADAP TEGANGAN DAN KONSENTRASI PERMUKAAN ELEKTRODA PADA LEAD ACID REDOX FLOW BATTERY Muhammad Ghufron; Silvi Hadila; Ervinka Felindia; Nikita Syaharani; Satria Pamungkas Panji Kumara; Irvan Fajar Hidayah; Gancang Saroja; Kurriawan Budi Pranata
ROTOR Vol 14 No 1 (2021)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (451.274 KB) | DOI: 10.19184/rotor.v14i1.23850

Abstract

Energy storage systems (ESS) with large storage capabilities, easy made, and low cost are in high demand. Dynamic lead acid battery (DLAB) as a breakthrough design compared conventional lead acid batteries offers a solution to these problems. Two Dimensional (2D) DLAB simulations with surface area variations of 8 cm2, 12 cm2, 16 cm2 and 20 cm2 were successfully build using the principle of tertiary current distribution and Nerst-Planck Interface. The results for one cycle charge-discharge test showed that the increase in surface area succeeded in increasing the final charging voltage with a value of 2.16 V; 2, 21 V; 2.30 V and 2.32 V and increase the initial discharging voltage by a value of 1.58 V; 1.59 V; 1.60 V and 1.62 V respectively but did not affect the electrode surface concentration. Dynamic lead acid battery has high energy efficiency of 70.6% -71.5%.
ANALISIS UNJUK KERJA COOLING TOWER INDUCED DRAFT COUNTER FLOW DENGAN BAHAN PENGISI ASBES Fachriza Putra Pratama; Digdo Listyadi Setyawan; Mochamad Edoward Ramadhan
ROTOR Vol 14 No 1 (2021)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1259.439 KB) | DOI: 10.19184/rotor.v14i1.24224

Abstract

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
PENGARUH TEMPERATUR PEMANASAN DAN WAKTU HOLDING SERAT DAUN NANAS TERHADAP KEKUATAN IMPACT KOMPOSIT EPOXY DENGAN METODE VACUUM INFUSION Mohamad Irkham Mamungkas; Nur Subeki; M. Ulul Albab
ROTOR Vol 14 No 1 (2021)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (302.535 KB) | DOI: 10.19184/rotor.v14i1.22076

Abstract

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.
PENGARUH TEMPERATURE, HOLDING TIME, DAN PENAMBAHAN Sn TERHADAP CACAT SHRINKAGE PADA PROSES SINTERING METAL INJECTION MOLDING AL-PP Ahmad Rendi Maulana; Danang Yudistiro; Mochamad Asrofi
ROTOR Vol 14 No 1 (2021)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (366.949 KB) | DOI: 10.19184/rotor.v14i1.19689

Abstract

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).
ANALISIS GRAFIS GERAKAN SENDI TERHADAP POROS VERTIKAL TULANG BELAKANG PENARI BAPANG MALANGAN Teguh Sasmito; Gatot Soebiyakto; Nurida Finahari
ROTOR Vol 14 No 1 (2021)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (378.184 KB) | DOI: 10.19184/rotor.v14i1.24220

Abstract

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.

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