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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 333 Documents
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PENGARUH PUTARAN SPINDEL, GERAK MAKAN DAN KEDALAMAN POTONG TERHADAP GETARAN SPINDLE HEAD HASIL PROSES DRILLING Yuni Hermawan
ROTOR Vol 5 No 1 (2012)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

The process  of  drilling  or  often  referred  to  as  the  drill  is  the  simplest machining  process  among  other  machining  processes.  Usually  in  the  garage  or workshop process is called the drill, although this term is actually less accurate. The process of the drill is intended as a process of making a round hole by using a drill (twist drill). While the process of drilling is the process to expand / enlarge the hole that can be done with a drill rod is not only done on the drill machine, but it could also machine tool, machine freis, or drilling machines. From the research results can be seen the effect of the parameters used to the chatter values obtained chisel. Can be seen carving the smallest value of the vibration generated from experimental data 1 is =0.6361 m/s2 at n = 136 rpm, f = 0,07 and a = 14 mm. While the biggest chisel vibration acceleration values obtained from experimental data collection to 27 for =,4267 m/s2 at n = 681 rpm, f = 0,22 and a = 20 mm. From the regression equation can be known parameters of the most influential pieces of depth of cut. The results in general that the value of vibration acceleration and determination, after  the meal motion raised the value of vibration acceleration chisel and roundness are also growing, this was due to the greater movement of food is used then the resulting anger is also getting thicker  so that the required cutting force increasing large. Consequently tangential force is also rising and  causing the radial force and moment coupling. Moments and radial forces which cause bending and twisting of the chisel, consequently the greater the roundness deviation. Key words: drilling, feeding, dept of cut, spindle head and vibration.
Fabrikasi Prototype Touchscreen Dengan Lapisan Nano Film Seng Oksida Menggunakan Metode Spin Coating Muhammad Mukri; F.X. Kristianta; Hari Sutjahjono
ROTOR Vol 8 No 2 (2015)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Touchscreen is a computer input device that works with a touch on the display screen using a finger or a digital pen. Materials used for the manufacture of thin layers for prototype touchscreen that ZnO and SnO. In this study, focused on morphology and transparency in the prototype touchscreen.Variations used is spin coating, namely 1000, 2000, 3000 and 5000 rpm. Making the spin coating performed at Energy Conversion Laboratory Department of Mechanical Engineering, Faculty of Engineering, University of Jember while for morphological examination conducted in the laboratory of Pharmaceutical Pharmacy, University of Jember and for transparency testing conducted at the Laboratory of Bio Science Faculty of Dentistry, University of Jember. The purpose of this research is to know the effect of the spin coating of the morphology of thin layers and determine the influence of spin coating a thin layer to transparency. The result is the morphology of the prototype touchscreen is the best there is in the round of 5000 rpm while transparency is best gained at 5000 rpm rotation with a wavelength of 450 nm with the result of 79.9% and the worst round of 1000 rpm with a wavelength of 450 nm with results of 19.8%, the higher the spin coating rotation on the morphological and transparency, the better. Keywords: ZnO, SnO, Morphological, dan Transparency
STUDI NUMERIK 2-D PENGARUH PRANDTL NUMBER DAN SUB-CRITICAL REYNOLDS NUMBER TERHADAP KARAKTERISTIK ALIRAN DAN PERPINDAHAN PANAS PADA SINGLE CIRCULAR CYLINDER Arif Kurniawan
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

The phenomenon of the process of flow and heat transfer in single circular cylinder is the base concept to determine the characteristics of flow and heat transfer in a circular cylinder arranged in a particular pattern , the practical application is widely used in industries such as determining the design arrangement of tube or pipe in the tool of heat tranfer (heat exchangers). The amount of heat transfer when the fluid flow across (cross flow) circular cylinder indicated by the parameter Nusselt number, be it is local Nusselt number (NuФ) and Average Nusselt number ( is strongly influenced by the Prandtl number and Reynolds number, where the area in the boundary layer that contribution is very large in the process of heat transfer is a stagnation point at the laminar boundary layer region, reattachment of the shear layer region on the transition boundary layer and periodic vortex flow region (turbulent boundary layer) in the region wake. Fluid flow phenomena and periodic vortex flow region accompanied by the occurrence of vortex shedding and Karman vortex street. The method used in this research is the study of numerical 2-D unsteady RANS (Reynolds-averaged Navier Stokes), using simulation analysis SST k-ω turbulence models in software CFD FLUENT to obtain data relating to the characteristics of fluid flow and heat transfer. Validation of numerical use grid independence according to Nusselt number of experimental results and the results of calculations using the empirical correlation equation. Numerical studies showed significant results that the Nusselt number is influenced by the value of Reynolds number and Prandtl number and can be used as a basis concept for studying the mechanism of the phenomenon of the concept of flow and heat transfer tube banks of heat exchangers. Value of local Nusselt number (NuФ) numerical simulation results increased with increasing Reynolds number and Prandtl number, where NuФ = 21.55 up to NuФ = 128.2, and from NuФ = 21.55 up to NuФ = 598.76. Keywords: Nusselt number Prandtl number, Reynolds number, 2-D unsteady RANS, SST k-ω turbulence model
UJI TABRAK KOMPONEN PINTU DAN BAMPER MOBIL LISTRIK BERBAHAN KOMPOSIT SERAT TEBU DENGAN METODE ELEMEN HINGGA Yuni Hermawan; Robertus Sidartawan
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

In each design do have to consider the strength of the material. The force that must be considered regarding the dimensions, materials, and the structure of the workpiece. This research will be discussed on the analysis of stress concentration crash test specimen doors and bumpers electric car with the finite element method. The finite element method is a numerical method used to solve technical problems and physical symptoms metematis which include stress, strain, force, and vibration analysis. The finite element method is to compare between calculation using CATIA software and use manual calculation. In this case the finite element method to be used is the finite element method 2D triangular elements with 3 nodes. From this study, the largest and smallest stress to the crash test door electric car is8.65 x 106 N/m2 and 1.71 x 105 N/m2. while stress for the largest and smallest electric car bumper crash test are: 4.69 x 107 N/m2 and 1.01 x 106 N/m2. Keywords: stress, crash test, the electric car doors and bumpers.
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
PENGGUNAAN GENERATOR HHO PADA SEPEDA MOTOR DENGAN MENGGUNAKAN SISTEM BI-FUEL DENGAN VARIASI LARUTAN ELEKTROLIT Anggun Angkasa Bela Persada; Ika Kusuma N; M. Khairul Abrar
ROTOR Vol 10 No 1 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Transport is one of the main community needs, but along with the increasing number of transport such as motorcycles and increasing also use of fuel oil.While fuel oil are currently derived from fossil where is not sustainable, alternative fuel can use water as fuel, by the process elektrolysis. Water is a compound composed of hydrogen and oxygen, both compound this is a flammable that can be used as alternative fuel or known as gas HHO . When used alternative fuel, gas HHO used along with fuel oil (bi-fuel) .This research discussed of the use of a generator HHO (tool gas producer HHO) on a motorcycle to a variation with an electrolyte namely fresh water, sea water and aquadesh in order to know some of the form a generator HHO that is the generator, the rate of the production of gas and efficiency of gas. This research obtained the best grades HHO power generator at 6.01 watts , the rate of the production of gas by 0.015 and efficiency as much as 1,265 when using aquades. Keywords: HHO, HHO generator, electrolysis
Front Section Fahrur Rozy
ROTOR Vol 4 No 1 (2011)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

ANALISIS PENGARUH VARIASI MASSA LPG SEBAGAI REFRIGERAN TERHADAP PRESTASI KERJA DARI LEMARI ES Alfons Erick Perkasa; Nasrul Ilminnafik; Digdo Listyadi
ROTOR Vol 6 No 1 (2013)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Refrigerant is a fluid acting on a cooling machine that plays an important role in a carnot cycle cooling engine. In study was done by looking at the effect of adding refrigerant mass variation of the COP (Coefficient of Performance) by using a refrigerant-based non-Freon refrigerant that use LPG (Petrileum Liquefied Gas). In this study using the LPG mass variations 50 grams, 80 grams and 90 grams and use R-12 refrigerant. From the research conducted, the results obtained from the performance engine cooling using refrigerant 80 grams times higher than that using the mass 50 grams and 90 grams, the highest coefficient of performance that is equal to 6,30 The result of research conducted, the result that the COP of the vapor compression machine (fridge) with a variation of the mass is the mass composition 80 grams is best used to obtain the greatest COP. Keyword : carnot’s siklus, COP (Coefficient of Performance), LPG(Liquefied Petrileum Gas)
Analisis Kekuatan Tarik dan Kekasaran Kawat Tembaga Hasil Drawing akibat Variasi Persentase Reduksi Mohammad Firman; Mahros Darsin; Hari Arbiantara
ROTOR Vol 6 No 1 (2013)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Wire drawing is cold working process to reduce the cross-sectional area. The value of reduction is different in every process, depend on the needs and working parameters. The degree of reduction causes differences of copper wire rod in the characteristics and quality, such as its tensile strength and roughness. The purpose of this research is to determine the influence degree of reduction to the tensile strength and roughness of copper wire. The research method is comparing the tensile strength and roughness of copper wires control with drawed copper wires, without repetition stage. The speciments used in this research are pure copper rods (99.9%) with 3.1 mm, 3.2 mm and 3.25 mm in diameter and 2.8 mm of die output, so will get the degree of reductions are 19%, 23% and 26%. The results of this research was the wire drawing process increase the tensile strength of copper rods from 86.87 MPa to 100.74 MPa on 19% reduction. On 23% reduction the tensile strength increase from 82.24 MPa to 105.62 MPa. The greatest increase of tensile strength was result by 26% reduction, it was from 86.87 MPa to 115.36 MPa With the more of degree of reduction on the drawing process led the increase of tensile strength will be greater. This research also obtained the result that the wire drawing process result the decrease roughness of copper rods from 0,144 μm to 0,089 μm on 19% reduction, from 0.146 μm to 0.087 μm on 23% reduction and the copper rod roughness decrease from 0.159 μm to 0.083 μm on 26% reduction. The increase of degree of reduction produce insignificantly result of surface roughness changing. Keywords: Roughness, Tensile Strength, Wire Drawing, Reduction, Copper

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