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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
 1 
Search results for , issue "Vol 15 No 1 (2022)" : 6 Documents clear
ANALISIS KERUSAKAN MESIN GEMINI FICEP G25 SP CNC MENGUNAKAN METODE FAILURE MODE EFFECT ANALYSIS (FMEA) Habibberi Agil Rabani; Iman Dirja; Najmudin Fauji
ROTOR Vol 15 No 1 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (235.935 KB) | DOI: 10.19184/rotor.v15i1.31474

Abstract

The rapid development of the manufacturing industry requires companies to always produce high quality and fully functional products. However, when the production process does not always run, there should be problems encountered, such as the machine factor which often breaks down and even shuts down completely, causing production disruption. One of the important factors in the successful implementation of Failure Mode Effect Analysis (FMEA) is to interpret before, the process takes place and not after it occurs. To support the implementation of Failure Mode Effect Analysis in the field of maintenance, an effort is needed to improve the state of the equipment. So, in this study, this method will be applied to the maintenance of the Gemini Ficep G25 CNC machine. The result can be assumed to be the primary problem in damage. The trouble that must be prioritized first are the plasma doesn’t run, the force on the engine drive does not move, the dust collector does not work and the internal and external coolants water don’t come out.
ANALISIS ALIRAN MASSA UAP PADA KATUP KONTROL UREA (UREA GLOBE CONTROL VALVE) DI UNIT PRODUKSI UREA PABRIK 1B PT PETROKIMIA GRESIK Erwan Adi Saputro; Auliya Ichda; Gelar Panji Gemilar; Bandung Arry Sanjoyo
ROTOR Vol 15 No 1 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (264.87 KB) | DOI: 10.19184/rotor.v15i1.31079

Abstract

In a process, industrial plants have several tools that require steam to help run the processing of a material. For the heating process, PT. Petrokimia Gresik requires steam. Sometime the steam leak during the process, so it reduces the productivity of this industry. For that reason, the purpose of this calculation is to find out the steam loss during the process, especially in urea globe control valve (PV-723, PV-726, PV-735). The result show that the upstream pressure and temperature at PV-723 are 21 kg/cm2G and 307 oC, upstream pressure and temperature in PV-726 are 5 kg / cm2G and 158 oC, upstream pressure and temperature on PV-735 of 2.5 kg / cm2G and 138 oC. For downstream pressure on all valves is 1.03323 kg/cm2G. The obtained mass flow (F) in each valve is 0.514 tons / hr, 0.86 tons / hr and 1,902 tons / hr. The value of the input mass balance of steam in the system is 82.70 tons/hour and the overall output is74.11 tons/hour. Therefore, the total steam loss in PV-723, PV-726, and PV-735 is around 8.59 tons/hour which mean there are some leak during the process that need to do further investigation.
EKSTRAK DAUN KALIANDRA SEBAGAI INHIBITOR ALAMI LAJU KOROSI ST-37 Moh. Jufri; Indra Surya; Ali Saifullah; Suwarsono Suwarsono; Rr. Heni Hendaryati; Sudarman Sudarman
ROTOR Vol 15 No 1 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (146.657 KB) | DOI: 10.19184/rotor.v15i1.30581

Abstract

The utilization of natural resources as a metal inhibitor is widely researched. The extract of Calliandra leaves is one of the natural resources utilized to prevent the corrosion rate. It contains high tannins, which is a natural compound that can be utilized as an inhibitor of the corrosion rate. The research is aimed to find out the efficiency of Calliandra leaves extract as the natural inhibitor for steel ST-37. The experiment method is applied to vary the extract of Calliandra leaves in the corrosive medium. Meanwhile, the extraction of Calliandra leaves uses the maceration method. The extraction of Calliandra leaves with the solvent uses an evaporation process using a rotary vacuum evaporator. The extract used as the inhibitor is determined in 5%, 10%, and 20% of concentrations. The sample test of corrosion used is steel ST-37 with 4 × 4 cm of dimension and 0.2 cm of thickness. The best inhibition efficiency is 99.73% with an inhibition concentration of 20% in HCl. It shows that the extract of Calliandra leaves works well as an inhibitor, and it is efficient to inhibit the corrosion rate.
STUDI EMISI SPEKTRA PADA SINTESIS PEMBAKARAN METAL ALUMINIUM DALAM PLASMA-UDARA Imam Sholahuddin; Andi Sanata
ROTOR Vol 15 No 1 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (344.308 KB) | DOI: 10.19184/rotor.v15i1.31133

Abstract

Research on emission spectra of metal combustion at temperatures above the boiling point of Al has been successfully carried out. This method can be used as a qualitative characterization of the presence of elements or compounds involved in the combustion process. Recording of emission spectra data was carried out during the process of burning Al powder with oxygen O in an air plasma flame at atmospheric pressure. The burning characteristic of Al was detected at the peak intensity of the wavelength λAl = 396 nm, and the reaction products of AlO with the peak intensity of the wavelength λ­AlO were 471, 489 and 512 nm, respectively. The absolute temperature of the plasma flame black body was 5660 K based on the highest peak intensity λAlO = 512 nm. The increase in emission intensity was quite significant when Al was started to be injected at 1.25 seconds, followed by an unstable plasma form. The steady state of the plasma flame indicates a full reaction in the vapor phase of AlO(g) in the form of Al sub-oxide and alumina before condensing on the outer surface area of ​​the plasma. High temperature thermal plasma-air can increase the homogeneity of the atomization process of particles into gaseous vapor which is an important initiation where nanoscale AlO particles begin to form.
ANALISIS PERFORMA TURBIN ANGIN VAWT (VERTICAL AXIS WIND TURBINE) TIPE HYBRID SAVONIUS DARRIEUS NACA 4712 Muhammad Trifiananto; Irvan Septianto Putra; Mochamad Edoward Ramadhan
ROTOR Vol 15 No 1 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (242.438 KB) | DOI: 10.19184/rotor.v15i1.29099

Abstract

A wind turbine is a device that converts wind energy into mechanical energy to produce electric power. Wind turbines have a simple working principle, which is to convert wind energy into mechanical energy in the windmill, then the rotation of the turbine0makes the rotor on the generator rotate and generate electricity. There are 2 types of wind turbines: vertical axis wind turbine and horizontal axis wind turbine. This study aims to determine the performance of the medium-scale VAWT hybrid savonius darrieus NACA 4712 wind turbine. The hybrid wind turbine is a combination of savonius and darrieus wind turbines to increase efficiency by utilizing the drag of the savonius turbine and lift force from the darrieus wind turbine. This study used an experimental method. The fan is used to vary the wind speed. The wind speed used ranges from 5, 5.5, 6, 6.5, 7, 7.1,7.2,7.3 m/s. This savonius darrieus hybrid wind turbine can produce efficiency of 0.037 at wind speed of 5 m/s with an initial torque of 0.088 N/m. The maximum rotation in this hybrid turbine study 118 Rpm was obtained at a wind speed of 7.3 m/s.
ANALISIS PERENCANAAN PERAWATAN SPINDLE MOULDER DENGAN METODE RELIABILITY CENTERED MAINTENANCE (RCM) DI PT. ROMI VIOLETA Muhammad Ardian Firmansyah; Ahmad Syuhri
ROTOR Vol 15 No 1 (2022)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (239.111 KB) | DOI: 10.19184/rotor.v15i1.29360

Abstract

In a furniture company, there are several production machines that are used and in the process are interconnected. The production machines used often experience downtime or machine failure. One of which is the spindle moulder machine, it is a cutting machine used to cut wood with various profiles as needed. Damage to this machine can cause the production process to stop, so that downtime will increase and the production target that has been set will be reduced. To maintain the working condition of the machine so that it can last a long time and run optimally, the initial step is in the form of scheduling maintenance. RCM is a strategy to optimize the company's asset maintenance program so that it can operate effectively. This research method uses quantitative analysis conducted on the spindle moulder machine and qualitative analysis includes FMEA and RCM II Decision Worksheet which will be used as references to identify component failures and determine appropriate maintenance actions. The research results, the availability value for the spindle bearing component is 99.72%, the motor component is 99.78%, and the v belt component is 99.77%, so the average availability value is 99.76%. The value of downtime after preventive maintenance using the RCM method on the spindle moulder machine is 43.54 hours with a decrease in machine downtime of 30.96 hours (41.55%).

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