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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 19 Documents
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Search results for , issue "2016: ROTOR Special Edition" : 19 Documents clear
ANALISIS VARIASI MEDIA PENDINGIN KONDENSOR TERHADAP RASIO PELEPASAN KALOR DAN COEFISIEN OF PERFORMANCE (COP) PADA MESIN PENDINGIN Digdo Listyadi Setyawan; Eko Widodo; Hasby R
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Household refrigerating machine (refrigerator) is a household appliance that is widely used in the family in Indonesia. The condenser is one of the essential components of the refrigerator that functions as a heat exchanger which is composed of the equivalent gas-phase refrigerant into a liquid. A crucial element of the condenser to cool the evaporator with the faster is the rate of heat release, coefisien of performance (COP). This research was conducted by varying the experimental cooling medium in the condenser of household refrigerating machine (refrigerator), such as the natural air cooling medium, the addition of fins and additional fan area 14,4 Watt. It aims to improve the coefficient of achievement refrigeration, heat release ratio and cooling rate speed. The results showed a coolant condenser with fan 14.4 W produces the highest COP value, 4,73, and the ratio of the smallest heat release ratio, 1,2. The larger the COP and the smaller pelepasn calorific value, indicating that the machine work better. Keywords : media pendingin kondensor, rasio pelepasan kalor, COP, mesin pendingin
PENINGKATAN PERFORMA KEMASAN DAN STRATEGI PEMASARAN(IbM UKM Pengerajin Kerupuk Getas) Ilham Ary Wahyudie; Zanu Saputra; Zaldy Kurniawan
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Kerupuk getas and kemplang are snacks from Bangka Island made from a mixture of mackerel and corn starch. The snacks are produced by snack food home industry. The production center located in Belinyu and Pangkalpinang City. The main problem of industry is lack of knowledge about the packaging technology and sales strategy. The product packaging is an important part of a sales strategy. In this report, the authors proved statistically that the product packaging can increase revenue. The packaging system by using vacuum packaging machine. Furthermore, sales strategy be developed into an online system.The results show that sales of products with packaging boxes significantly affect gross income partners. Correlation test showed that the value of pearson product moment (r) is 0.862. The value of the Pearson product moment means that there is a very close relationship between the product packaging boxes with gross revenue and P-value is 0.05 so it was concluded that the relationship is significant. Keywords: product packaging, sales strategy, online system, pearson product moment, P-value.
STUDI PENGARUH JUMLAH SUDU TERHADAP UNJUK KERJA SAVONIUS WATER TURBINE PADA ALIRAN AIR DALAM PIPA Imron Hamzah; Syamsul Hadib; D. Danardono Dwi Prija Tjahjanac
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Rainwater, flowed through a pipe, has potential energy that can be used to drive a turbine coupled with generator. Savonius water turbine with horizontal axis is used here as the turbine. The research compares the Savonius water turbine with different blade number of 2, 4, 6, 8, 10 and 12 using Computational Fluid Design (CFD) of SolidWork 2013. The turbine specifications have the angle of curvature about 70°, the aspect ratio of 1, the end plate ratio of 1,1 and deflector angle of 45°. The data obtained in this paper are the pressure contour of Savonius turbine blade, the velocity of fluid flow and the torque generated. The aims of the research are to obtain the influence of the blade number in the Savonius turbine to the turbine performances and to obtain the best of blade number. The results show that two blades has the best performances compared with the others. It has the highest torque about 5,75 Nm for the same conditions as well. Keywords: power, Savonius turbine, torque, blade, flow
ANTHROPOMETRI PEKERJA INDUSTRI DAN PERTANIAN DI BEBERAPA NEGARA TERTENTU: SEBUAH STUDI LITERATUR Robertoes Koekoeh Koentjoro Wibowo
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Research on anthropometry has been widely carried out using different objects and methods. The researchers conducted a study with measurements of anthropometric dimensions to body dimensions in particular where the number of body dimensions which measures are different among studies. Thus the result of measurements of body dimensions of each study is not the same. However there are having similar method of research on the measurement of the same body dimensions. Body dimensions data that obtained from measurements can be used as designers reference in the design of ergonomic tools or machinery. From the anthropometric data in the same industry and agriculture workers can be done several comparative dimensions of the body of workers and farmers. This study is comparing anthropometric of worker among in industrial population and among agricultural workers/ farmer. Base on review of data, the study has resulted that each people in different country has its own characteristic form of body dimensions which differ from another. The comparison of body dimensions among workers who work in industrial show that they have variation Mean (M) value of body dimension. Characteristic body dimension of Algerian agriculture workers, except foot breadth, have highest Mean (M) value compare with others countries. Thai female agriculture workers have lower Mean (M) value of body dimension in almost all parts compare with others countries. Keywords: anthropomety, industrial, agriculture
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

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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

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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 SUDUT KELENGKUNGAN SUDU SAVONIUS PADA HORIZONTAL AXIS WATER TURBINE DI ALIRAN DALAM PIPA Taufan Apha Sanditya; Syamsul Hadi; D. Danardono Dwi Prija Tjahjana
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Water turbine is a device that works to convert water energy into mechanical energy in the form of a torque in turbine shaft. In this study, the angle of attack of Savonius water turbine with horizontal axis (HAWT), simulated using “Solidworks Flow Simulation” software, is obtained by applying the model in a flow through a pipe. The angle of attack used in this simulation is varied from 110°, 120°, 130° and 140°. The aims of this research are to obtain the optimum angle of attack with a debit of 0,0122 m3/s. Then the angle of attack of the blade is evaluated based on the torque, pressure contour and fluid velocity distribution. The results show that the optimum angle of attack is found at 120° with the torque about 3,8 Nm. Keywords: picohydro, angle of attack, solidwork, savonius, torque
PENGARUH VARIASI WAKTU SHOT PEENING TERHADAP STRUKTUR MIKRO DAN KEKERASAN PERMUKAAN PADA MATERIAL IMPLAN AISI 304 Trio Nur Wibowo; Priyo Tri Iswanto; Bambang Hari Priyambodo; Nur Amin
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

AISI 304 stainless steel is a type of implant material with a relatively low cost. However, its mechanical properties need to be improved so it can compensate the AISI 316L and titanium alloy materials. Fatigue characteristic is also one of the important criteria that must be evaluated in order to achieve overall service performance when the material is under dynamic loads. The hardness surface and the nano-structures formation can delay the propagation of fatigue crack initiation and can reduce the corrosion rate. This study is conducted to determine the changes in microstructure and hardness of AISI 304 for shot peening process. The surface treatment by shot peening process is performed by setting the variation of the shooting time of 0, 5, 10, 20, 30 and 40 minutes at a shooting pressure of 7 bar using the Steel Shot diameter of 0.6 mm with a hardness of 40-50 HRC. The distance between the nozzle and the specimen surface is set at 100 mm. The microstructure is analyzed by optical microscope with a magnification of 100 times and photographed using optilab, which is connected to a computer. Surface hardness is tested using a Micro Vickers with indentation load of 10 grams for 10 seconds. The results show that refined microstructure layer is formed in the shot peening surface and the hardness is also increased gradually as well as shot peening time of 0, 5, 10, 20, 30 and 40 minutes. This also increase the hardness number of 241, 404, 418, 437, 481 and 496 VHN. To sum up, the shot peening can be used to refine the grain and to increase the hardness. Keywords: AISI 304, shot peening, microstructure, Vickers hardness
STUDI NUMERIK EFEK PERBANDINGAN PENAMBAHAN WINGTIP FENCE DAN BLENDED WINGLETTERHADAP PERFORMA AEORODINAMIKA AIRFOIL NACA 23018 Setyo Hariyadi S.P.
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Winglet is one of the devices in airplane wing that allows wing performances without widening the wingspan. It serves to damp the vortex flow at the ends of the wing where the airflow coincide that produce turbulence. The air loop requires more energy in the plane to make stable in the air, so it definitely wasteful of fuel. Based on the pilot experience, winglet in the plane can save fuel consumption by 7% that is a huge amount of the percentage to travel in a long way. This study conducts numerical simulation using simulation software with turbulent model of k-ε realizable. The free stream of fluid flow is determined as 40 m/s (Re = 5 x 106) with angle of attack (α) = 0o, 5o, 10o and 15o. Airfoil NACA 23018 is used as specimen test applied with or without winglet. Wingtip fence with variations of forward, rearward and blended is designed as the winglet. The results show that adding winglet can reduce the vorticity magnitude in rear wing. Moreover, it can also increase the aerodynamic performances by increasing maximum CL/CD both in forward and rearward wingtip fence and also in blended winglet. The pressure distribution in the winglet model shows gradually increasing in the lower surface compared with plain wing. Keywords: airflow, wingtip fence, blended winglet, lift force, drag force
INVESTIGASI PERBEDAAN SUHU TUANG TERHADAP SIFAT MEKANIK DENGAN PENGUKURAN KEKERASAN DAN IMPACT PADA PADUAN AL 2024 R. Syaputra; D. P. Ali; R. Eko; H. Akhyar; P. T. Iswanto
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Aluminum alloys have high strength to weight ratio, tough enough, resist to fatigue crack propagation, easy to cast, corrosion resistant and recycle. High strength to weight ratio means an efficient, strong and capable of long-lived, economical and environmentally friendly. In the application as a frame structure, mechanical properties are something that must be considered. Therefore, the researchers tried to find the effect of pouring temperature differences in Aluminum 2024 through hardness test and impact test. For the investigation at three different temperatures of 688oC, 738oC, 788oC, the gravity casting method is used to produce a plate-shaped object. The test results showed an increase in hardness, with the highest value of 103.71 BHN at a temperature of 738°C and impact test results with the highest value of 4.9 Joule at temperatures of 738°C. Keywords: aluminum alloy 2024, foundry, cast temperature

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