cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Nasrul Ilminnafik
Contact Email
jurnal.rotor@unej.ac.id
Phone
+628123290147
Journal Mail Official
jurnal.rotor@unej.ac.id
Editorial Address
Jl Kalimantan 37
Location
Kab. jember,
Jawa timur
INDONESIA
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 333 Documents
 17   18   19   20   21 
KOMPOSISI CAMPURAN KOTORAN SAPI DAN LIMBAH PUCUK TEBU (SACCHARUM OFFICINARUM L) SEBAGAI BAHAN BAKU ISIAN SERTA PENGARUHNYA TERHADAP PEMBENTUKAN BIOGAS Danial Ahmad Fauzi; Yuli Hananto; Yuana Susmiati
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (387.963 KB)

Abstract

Biogas is the result of organic waste fermentation into methane with certain anaerobic microorganisms (air-tight). The purpose of this study is aims to analyze the concentration of a mixture of cow manure and sewage shoots sugar cane based on C/N ratio to produce biogas and to compare the results and identify the best gas production rate. The treatment in this study is using 20, 30 and 40 C/N ratio. The parameters that will be observed is the first time to produce gas, volume of biogas, biogas production rate, ambient temperature and fire flame. Based on this research, biogas optimal results based on 40 C/N ratio that is 40.205,7 ml but it have high CO2 this is proved by the flame test, while the C/N ratio of 30 is 32215 ml and C/N ratio of 20 is 6288 ml. Best biogas production rate is 30 C/N ratio which is on the first day can produce 13.733 ml gas, C/N ratio of 40 is 10.666,67 ml and C/N ratio of 20 is 1.203 ml. Therefore, the more a mixture of sugar cane waste in biogas shoots cow manure, the greater the volume of biogas produced. Keywords: Biogas, Cow manure, waste shoots sugarcane, C/N ratio
PENGARUH WAKTU GESEK FRICTION WELDING TERHADAP KARAKTERISASI BAJA AISI 1045 DENGAN SUDUT CHAMFER 15 DERAJAT Riko Septian; Gaguk Jatisukamto; Salahuddin Junus
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (233.081 KB)

Abstract

Friction welding is a technique by rubbing between two metal surfaces to produce a heat source, causing the union between the two metal surfaces without using filler metal. The purpose of this research is to improve the mechanical strength of metal welded joints 1045. The research method is done by rubbing between the two metal surfaces with the time variation of friction 25 seconds, 35 seconds, 45 seconds and 55 seconds. Friction time in 45 seconds able to get the highest tensile strength about 703,835 N/mm2 and get fracture in main metal. In other, at the time of friction 25 seconds reach its low tensile strength about 429,671 N/mm2 and occured a fracture in connection welds. Best hardness distribution obtained at the time of friction 55 seconds with a value of 270 BHN in hardness weld metal, the hardness value inleft part of HAZ reach 252 BHN and hardness value of right part of HAZ reach 247.6 BHN. Lowest hardness obtained at Friction time in 25 seconds with welding metal hardness of 250 BHN, hardness value in left side HAZ reach 240.3 BHN and the right sideof reach 236.6 BHN. Time friction affect to the microstructure and mechanical properties of AISI 1045. Smaller crystal structure will be block the movement of the dislocation, so that the mechanical properties of the metal are getting better, and conversely when crystal structuresare formed getting greater, the mechanical properties of the material will decreases. Keywords: friction welding, friction time, tensile strength, hardness, metallography.
STUDI SIMULASI PENGARUH SUDUT DEFLEKTOR PADA SAVONIUS WATER TURBIN DENGAN SUMBU HORIZONTAL TERHADAP POWER GENERATION ALIRAN AIR DALAM PIPA Ari Prasetyo; Syamsul Hadib; D. Danardono Dwi Prija Tahjana
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (584.647 KB)

Abstract

Savonius water turbine is one of the simplest design and low cost production that attracts wide attention. A single stage Savonius water turbine with horizontal axis is applied in a pipe with diameter of 3 inch to give variation in the deflector angle. Deflector is used to focusing the flow so the torque is increased by the blade curvature in the turbine. This simulation uses the SolidWork 2013 software. The aim of this simulation is to obtain the best performance in each deflector angle, then the result is compared with a turbine without deflector. The deflector performance is analyzed by the pressure contour, the torque and the angle of attack. The deflector angle is vary in different angle of 20°, 30°, 40° and 50° with the deflector ratio of 50%. By using debit input of 12,2x10-3 m3/s, the results show that angle deflector of 30° is obtained as the best performance where it produce the pressure contour about 279820,99 Pa, torque of 0,6070 Nm and more stable in angle of attack. Keywords: picohydro, SolidWork, Savonius, deflector, torque
PENGARUH MAGNESIUM TERHADAP KEKERASAN DAN KETAHANAN AUS KOMPOSIT ALUMINIUM 6061/nano-Al2O3 DENGAN METODE STIR CASTING Rochmad Eko Prasetyaning Utomo; Salahuddin Yunus; FX Kristianta
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (566.694 KB)

Abstract

Aluminum composite 6061/nano-Al2O3 is a material that utilizes aluminum 6061 as a matrix. Aluminum 6061 is aluminum alloys with magnesium. The mechanical properties of aluminum 6061 are lower than the steel. To increase the mechanical properties of aluminum 6061, nano-Al2O3 particle is added as reinforce. Problems encountered in the manufacture of these composites are the bond between the matrix and the reinforcement. Aluminum 6061 and nano-Al2O3 cannot form a bond each other so it is necessary to add a wetting agent to improve bonding between aluminum 6061 and nano-Al2O3. Wetting agent used in this study is magnesium with purity levels reached 99%. The magnesium is added by 1%, 3% and 5%. Stir casting process is used in this study in order to mix aluminum, alumina and magnesium evenly. Then hardness test and wear test are performed to determine the mechanical properties of the composite 6061/nano-Al2O3. The results show that the hardness is increased about 44 HRB with adding magnesium of 5%. The wearing resistance is also increased which is marked by the lower rate of the wear until reached 2.86 x 10-3 mm3/m. Keywords: Komposit Al 6061/nano-Al2O3, Magnesium, Stir Casting, nano- Al2O3, Al 6061
PENGARUH LAJU PREKURSOR SERBUK ALUMINIUM TERHADAP BENTUK MORFOLOGI NANOPARTIKEL ALUMINA DENGAN METODE THERMAL PLASMA Havid Arifian Rochman; Arief Ginanjar Dirgantara; Salahudin Junus; Imam Sholahuddin; Aris Zainul Muttaqin
ROTOR Vol 10 No 1 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (474.495 KB) | DOI: 10.19184/rotor.v10i1.5142

Abstract

The synthesis of nanoparticles using thermal DC plasma method is a simple method for ease of installation and high efficiency is due to the rate of precursor that can be controlled. Micro-sized aluminum powder is synthesized using thermal DC plasma undergoing a process of evaporation as it passes through high temperature plasma flame, where kemuadian oxidized aluminum particles which evaporates the particles are split and binds with oxygen to form aluminum oxide or also known as alumina (Al2O3). In this experiment, the flow rate of oxygen plasma parameters at 35 SCFH (Standard Cubic Feet per Hour) and 20 amperes flows with precursors rate variation of 1.16 g / min, 3.19 g / min, and 3.5 g / min. Precursors used is 88 micro sized aluminum powder. To determine the morphology of nanoparticles of alumina testing scanning electron microscopy (SEM), the morphology form of nanosphere. Results of the analysis showed that the rate of precursor low causing agglomeration level slightly while the higher rate of precursor agglomeration rate also increased. At the rate of precursor 1.16 g / min, nanoparikel undergo agglomeration with an average particle size of 36.55 nm, and then at a rate of 3.19 gr precursor / mnt an average particle size of 46.49 nm, and at a rate of 3.5 gr / mnt an average particle size of 46.49 nm. The powder nanoparticles were then characterized using X-ray defraksi (XRD) where all alumina nanoparticles were synthesized showed alumina phase that is formed is a phase δ-Al2O3. Keywords: Alumina nanoparticles, DC Thermal Plasma, morphology, precursor rate, nanoparticles size, SEM, XRD.
PENGARUH POST-TREATMENT PLASMA CVD LAPISAN DIAMOND-LIKE CARBON TERHADAP SIFAT KEKERASAN PERMUKAAN BAJA AISI 410 Wahyu Anhar; Nurwahidah Jamal; Suprapto Suprapto
ROTOR Vol 10 No 1 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (180.323 KB) | DOI: 10.19184/rotor.v10i1.5150

Abstract

This study is aimed to determine the effect of post-treatment plasma CVD on diamond-like carbon films of surface hardness AISI 410 steel. Enhancement of surface hardness on AISI 410 can be done with deposition thin layer by plasma CVD, and continued by post-treatment plasma CVD. Mixture of Ar (90%) with CH4 (10%), and He (76%) with CH4 (24%) are used as thin layer material. Deposition parameter of pressure, temperature, and time that been used are 1.6 mbar, 300 °C, and 4 hours, respectively. Furthermore, post-treatment process parameter is used by Ar gas, with pressure of 1 mbar, temperature 300 °C, and variation time of 10, 20, 30 minutes. Surface hardness test is used by Vickers microhardness tester. Cross-section microstructure and chemical compositions are examined by scanning electron microscopy coupled with energy dispersive spectroscopy. Based on surface hardness test, the surface hardness on AISI 410 is increased by post-treatment process. The surface hardness from 232.3 VHN increase to 301.2 VHN is produced by post-treatment of compound Ar-CH4 in 20 minutes. Futhermore, the surface hardness from 1,035.8 VHN increase to 1,743.2 VHN is produced by post-treatment of compound He-CH4 in 30 minutes. Keywords: Post-treatment, Surface hardness, AISI 410, Ar-CH4, He-CH4
PENILAIAN RISIKO DAN PENENTUAN SISA UMUR TERHADAP PIPA GAS TEE 24" DI PT.X DENGAN MENGGUNAKAN METODE RISK BASED INSPECTION Gunawan Dwi Haryadi; Agus Suprihanto; Auda Sephanya; Ismoyo Haryanto
ROTOR Vol 12 No 1 (2019)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (429.771 KB) | DOI: 10.19184/rotor.v12i1.14425

Abstract

Risk Based Inspection (RBI) of 24” oil pipe according API 581 has been conducted. The analysis shows that the piping system has medium risk. The remaining life is between 6-7 years. Because piping failure is due thinning, the next inspection using NDT is suggested not more half of the remaining life.
PENGARUH MICROEXPLOSION TERHADAP KARAKTERISTIK PEMBAKARAN BAHAN BAKAR MINYAK JARAK PAGAR (JATHROPA CURCAS L.) PADA BERBAGAI DIAMETER DROPLET Ahmad Adib Rosyadi
ROTOR Vol 6 No 1 (2013)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (560.441 KB)

Abstract

Insights to develop alternative energy sources comes as the depletion of fossil fuel reserves . One is the use of Jatropha or Jatropha curcas Linnaeus . Plants that can be grown on degraded land and does not require much water and fertilizer proved to be extremely effective if the fruit or seeds developed into biodiesel as an alternative energy to replace diesel oil, fuel oil , even kerosene. Jatropha oil has properties that approach the characteristics of liquid fuel especially diesel oil . This prompted the researchers conducted a study of castor oil to find alternative fuels as a substitute for petroleum. In this study the method used is a true experimental research , by comparing one or more test groups with treatment and without treatment . This study uses a variation of the independent variable droplet diameter to the size of 1.75 mm, 1.88 mm , and 1.98 mm . Dependent variable is the temperature of combustion , burning time , the sound frequency fluctuations and flame visualization The results showed that the larger the droplet diameter greater likelihood microexplosion . From observation of the flame burning with microexplosion found that the larger the droplet diameter , the height and width of the flame will tend to increase. Microexplosion make a bigger flame. Burning castor oil to produce ignition delay time microexplosion sooner. Microexplosion castor oil combustion also generates burning with a good rate . It is approaching the character of diesel oil , the ignition delay time is fast but the diesel combustion temperature is lower than pure castor oil. Keywords : microexplosion, burning rate, castor oil
Analisa Respon Antilock Braking System(ABS) dan Energi yang Dibutuhkan Selama Proses Pengereman pada Jalan Menurun Mochamad Edoward R.; Harus Laksana Guntur
ROTOR Vol 6 No 2 (2013)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (650.726 KB)

Abstract

The process of braking on downhill roads require greater energy due to the influence of gravity work by vehicle due to the tilt angle . This paper reports the results of modeling and simulation responses ABS and energy required during braking on a straight - path trajectory decreases. Vehicles with ABS modeled mathematically to obtain the dynamic equations of the system. With the Laplace transform transfer function obtained from the vehicle with ABS. And with the help of MATLAB SIMULINK software obtained response vehicle speed, wheel speed, wheel slip, braking distance, and the energy required during the braking process. In this study used the roadway with a variation of the angle θ decreases of 100, 200, 300. Assuming the initial speed of the vehicle at 40kph , it can be concluded that the simulation results show stopping distance was 31.08m, 32.96m, 34.77m with a stop time for 5.169s, 5.325s, 5.464s sequentially in order of angular variation. While the maximum power required during the braking process is 1.88kW, 3.71kW, 5.44kW. The results of calculation of the energy required during the braking process can be used as a reference in planning a regenerative braking system, the utilization of the energy wasted during braking, especially on the downhill road conditions. Keywords: Braking Energy, Regenerative Braking System (RBS), Antilock Braking System (ABS), Modelling ,Simulation.
SIFAT MEKANIK DAN CACAT PENYUSUTAN (SHRINKAGE) AKIBAT VARIASI KOMPOSISI CAMPURAN DAUR ULANG POLYETHYLENE PADA INJECTION MOULDING Muhammad Ghilman Badri; Mahros Darsin; Dedi Dwilaksana
ROTOR Vol 7 No 1 (2014)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (303.716 KB)

Abstract

Injection moulding is one process to form plastic by compress the melted plastic in a closed die. The raw material for the process either pure plastic pellet or mixed with recycled plastics. this research focused on finding the acceptable percentage of recycled  the raw material in term of tensile strengh and shrinkage. The composition is varied from 0% to 100% of polyethylene. Tensile test shows that the more percentage of recycled the lower is the  tensile strenght. on the other hand, the more the recycled composition the highernis shrinkage number. Both decrease of tensile strengh and increase of shrinkage are linearly. Recycled plastic in the raw material makes the composition be not uniform. It leads misrun defect, i.e. the melted plastic solidified before it reach the destined cavity in the mold. Moreover, it also creates more void in the parts. The highest tensile strength of 19.10 N/mm2 when no recycled mixed in, whereas the minimum of 12.05 N/mm2 achieved when 100% recycled was applied. Recycled Composition of 100% also increased by 9,82% compare to pure plastic. Keywords: Recycled plastic, tensile strength, shrinkage.

Page 19 of 34 | Total Record : 333

 17   18   19   20   21 

Filter by Year

2011 2025


Reset
Filter By Issues
All Issue Vol. 18 No. 1 (2025) Vol. 17 No. 2 (2024) Vol. 17 No. 1 (2024) Vol 16 No 2 (2023) Vol 16 No 1 (2023) Vol 15 No 2 (2022) Vol 15 No 1 (2022) Vol 14 No 2 (2021) Vol 14 No 1 (2021) Vol 13 No 2 (2020) Vol 13 No 1 (2020) Vol 12 No 2 (2019) Vol 12 No 1 (2019) Vol 11 No 2 (2018) Vol 11 No 2 (2018) Vol 11 No 1 (2018) Vol 10 No 2 (2017) Vol 10 No 1 (2017) 2017: ROTOR Special Edition Vol 9 No 2 (2016) Vol 9 No 1 (2016) 2016: ROTOR Special Edition Vol 8, No 2 (2015) Vol 8 No 2 (2015) Vol 8 No 1 (2015) Vol 8, No 1 (2015) Vol 7, No 2 (2014) Vol 7 No 2 (2014) Vol 7, No 1 (2014) Vol 7 No 1 (2014) Vol 6, No 2 (2013) Vol 6 No 2 (2013) Vol 6 No 1 (2013) Vol 6, No 1 (2013) Vol 5, No 2 (2012) Vol 5 No 2 (2012) Vol 5 No 1 (2012) Vol 5, No 1 (2012) Vol 4, No 1 (2011) Vol 4 No 1 (2011) More Issue