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Teng Sutrisno
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Gedung P lantai 5, Universitas Kristen Petra Jl. Siwalankerto 121-131, Surabaya, Jawa Timur 60236, Indonesia.
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INDONESIA
Jurnal Teknik Mesin
Published by Universitas Kristen Petra Surabaya
ISSN : 14109867     EISSN : 26563290     DOI : https://doi.org/10.9744/jtm
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Teknik Mesin (JTM) merupakan Jurnal Keilmuan dan Terapan Teknik Mesin yang dikelola oleh Program Studi Teknik Mesin, Fakultas Teknologi Industri, Universitas Kristen Petra. JTM terbit pertama pada April 1999. JTM telah mendapatkan akreditasi Jurnal Nasional oleh Dirjen Dikti Depdiknas dengan SK-Nomor: 02/Dikti/Kep/2002, SK-Nomor :43/DIKTI/Kep/2008. JTM diterbitkan setiap bulan April dan Oktober. Tujuan penerbitan jurnal ini antara lain adalah untuk: Menyebarluaskan pengetahuan, pengalaman/terapan dan temuan baru para ilmuwan atau praktisi di bidang teknik mesin. Meningkatkan motivasi para ilmuwan dan praktisi untuk melakukan penelitian dan pengembangan ilmu di bidang teknik mesin
Arjuna Subject : Energi (semua kategori) - Energi (Lain-Lain)
Articles 295 Documents
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Analisis Termal Macro-Thermobalance Pembakaran Serbuk Gergaji dan Campurannya Sudarno ,; Dwi Aris Himawanto; Agustinus Sujono
Jurnal Teknik Mesin (Sinta 3) Vol. 14 No. 2 (2013): OCTOBER 2013
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

The Sawdust is a waste of sawmill industry which can be used for energy sources. However, the existences of wastes are generally susceptible to mixed with other biomass. This research will investigated the combustion characteristics of sawdust mixed with rice husks or corncobs in powder form. Percentage weight of a mixture of rice husks or corn cobs into sawdust be varied in the range 0, 25, 50, 75, and 100%. Thermal analysis of macro-thermo balance at heating rate 20°C/min in air environment is used in this case. While the samples with weight 10g to be applied in this experiment. The results showed that the graphics TG of the sample mixture has shifted to the right for the powder size 40+/60-mesh. It means the decomposition has been delayed or occurre data higher temperature region. As for the powde rsize 20+/40- mesh graphics TG of the sample mixture shifted to the left, it means early decomposition occurred or occurs at a lower temperature. The average activation energy of carbon combustion from saw dust, saw dust-rice husk and saw dust-corncobs respectively 91.67kJ/mole, 95.28kJ/mole, and 89.83kJ/mol. While the average minimum peak of the graphics DTG, mixture of sawdust-rice husk higher and sawdust-corncobs lower than sawdust. The average reaction rate constants of carbon burning from sawdust, sawdust-rice husk and sawdust-corncobs are 0.0071, 0.0047, and 0.007, respectively.
Increase of Performance and Smoke Emission by Increasing ERG Rate in IDI Diesel Engine using Jatropha Oil and Diesel Fuel Blends Syaiful MSK Tony Suryo Utomo
Jurnal Teknik Mesin (Sinta 3) Vol. 14 No. 2 (2013): OCTOBER 2013
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Recently, a study of biodiesel fuel use as a substitute of diesel fuel becomes an interesting topic due to critical fossil fuel availability. The use of biodiesel fuel directly into diesel engine without the change of fuel injector parameter causes the problems because of different properties of biodiesel fuel compared with that of diesel fuel. The aim of present study is to investigate experimentally the effect of exhaust gas recirculation (EGR) on the diesel engine performance and smoke emissions by using jatropha oil and diesel fuel blends as the fuel. EGR is one of methods to increase the fuel efficiency of diesel engine. The use of EGR method on diesel engine may also reduce NOx emissions. In this research, EGR temperature is varied to study its effect on the diesel engine consumption and smoke emissions. Jatropha oil blend is in the range of 10 to 30 %. It is found that the high EGR rate expressed the low fuel consumption compared with that of the low EGR rate by using diesel fuel or jatropha oil - diesel fuel blends. The present paper also shows that the high EGR rate results the high smoke emissions for both cases.
Studi Numerik Pengaruh Geometri dan Desain Diffuser untuk Peningkatan Kinerja DAWT (Diffuser Augmented Wind Turbine) Adhana Tito Hary Wibowo; Ruri Agung Wahyuono; Gunawan Nugroho
Jurnal Teknik Mesin (Sinta 3) Vol. 14 No. 2 (2013): OCTOBER 2013
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Numerical study was conducted on the effect a variation of flange angle on diffuser DAWT performances using Computational Fluid Dynamics (CFD). This research objective is to perform and analyze the flow characteristics such as Velocities profile and static pressure profile on the effect of diffuser’s flat flanged tilt angle. Verification of computation condition result by comparing data qualitative data and quantitive data Ohya’s experiment, (2008).  Qualitative analysis showed by velocity contour, streamline contour and velocity vector. Quantitative result showed by the velocity increased profile and static pressure profile graph. The streamline of simulation result showed the bigest blockage effect due to of airflow is flange with angle 900. This effect caused the vortex formation at back side of flange. Velocity vector contour given prediction on direction of stream flow tip losses reduction at the backside of flanged diffuser. Quantitative data showed  flow performance in interior diffuser with top increased velocity augmentation of flanged diffuser is angle 900 by 9,82 m/s or 1,96 times freestream velocities and static pressure coefficient value by -2.85.
Pemesinan Laju Tinggi dan Pemesinan Kering Menggunakan Pahat Karbida pada Bahan Aluminium 6061 Bobby Umroh; Surya Murni Yunus; Syamsul Basri
Jurnal Teknik Mesin (Sinta 3) Vol. 14 No. 2 (2013): OCTOBER 2013
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Research of high speed machining and dry machining use for the best cutting conditions on the roughness aluminum 6061 material surface using a carbide tool. Collection machining test data is performed 4 times trial with 3 main variable is the rate of cutting (V), Ingestion rate (f) and depth of cut (a) at three levels of scale. The best surface roughness conditions is determined by the rate of the cemetery, where the rate of feeding is recommended at f = 0.12 mm/rev or < 0:17 mm/rev. Effect of cutting force is inversely proportional to the value of rate of cuts. At the greater of the cutting force so the surface roughness also getting smaller. Depth of cut and rate cuts also affects on the surface roughness but not in any condition determined. At the lowest state with V = 1000 m/min f = 0:12 mm/rev and a = 1 mm, surface defects (surface defect). Possibly, this is caused by the vibration of the tool due to lack of dynamic balance in the cutting process.
Peningkatan Sifat-Sifat Fatik Baja NS-1045 Chromized dengan Proses Perlakuan Panas Amru Siregar; , Amrinsyah
Jurnal Teknik Mesin (Sinta 3) Vol. 14 No. 2 (2013): OCTOBER 2013
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Metal alloys for usage the high temperature, besides needed the good mechanical properties, also needed the corrosion resistance properties. Chromized components exhibit superior resistance to a variety of aggressive corrosive mechanism, including high temperature oxidation, and chloride-related attack. Chromized coatings are diffusion-type coating can be applied by electrodeposition. So that happened degradation fatigue strength of chromized steel. The mechanical properties of chromized steel can be improved by heat-treatment process. In this research conducted hardening and tempering process to NS-1045 chromized steel. Influence of heat-treatment to the mechanical properties, it is has been tested by using machine rotary bending test. While examination of microstructure can do it by using microscope optic and scanning electrone microscopy (SEM). Analysis influence heat-treatment of NS-1045 chromized steel to fatigue strength, it is increase about (20÷25)%.
Experimental Modal Analysis (EMA) untuk Mengetahui Modal Parameter pada Analisis Dinamik Balok Kayu yang Dijepit di Satu Ujung Oegik Soegihardjo; Suhardjono Suhardjono; Bambang Pramujati; Agus Sigit Pramono
Jurnal Teknik Mesin (Sinta 3) Vol. 15 No. 1 (2014): APRIL 2014
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Experimental modal analysis (EMA) is one among other methods to analyze dynamics characteristics of the structure.  EMA is used widely in structural, automotive engineering, design and machining proccess for determination of modal parameters.  EMA measures  excitation force and frequency response function of the structure in time domain and then converts these data into frequency domain using Fast Fourier Transfrom (FFT). In this research EMA is applied to analyze the dynamics characteristics of wood structures that would be used as stiffener for boxed shaped work-piece or as a frame for traditional wood ship. The availability of the characteristics dynamics' data for wood are limited, so EMA is very useful tool to determine modal parameters for specific wood structures.Experiments was conducted using modal hammer to excite the wood structure and an accelerometer to measurse the response of the structure as acceleration data. The data acquired by EMA are used to determine modal parameters of wood structure in the terms of natural frequency, mode shapes and damping ratio. The dimension of wood being analyze (length x width x height) is 860 mm x 50 mm x 50 mm. Simulation of modal analysis using finite element method was carried out as a comparison to the experimental data. Four points or locations along the wood's length are excited using modal hammer to get data for determination ofmodal parameters of the wood structure. Several curves such as FRF, amplitude and phase angle are presented for modal parameters determination. Analysis based on those curves provide the modal parameter of the structure. The natural frequencies of the first three modes of wood structures are 56 Hz, 334 Hz and 854 Hz. Damping ratio for those natural frequencies are 0,0178; 0,0139 and 0,012. The natural frequencies of the first three modes of wood structures from modal analysis simulation are 55,37 Hz,339,71 Hz and 921,71Hz.Differences between experimental and simulation results in term of natural frequencies are 1,13%; 1,71% and 7,93%.It could be said that experimental data fit to those of the simulation. Mode shapes of the wood structure found both from experimental and simulation are also the same. Coherencies of the experimental data are between 0,80  and 0,99. Those mean that the influence of noises on the measured data are small.
Optimasi Multi Respon pada Proses Gurdi dengan Menggunakan Metode Taguchi–Grey Yopi Y. Tanoto; Bobby O. Soepangkat; Arief Wahjudi
Jurnal Teknik Mesin (Sinta 3) Vol. 15 No. 1 (2014): APRIL 2014
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Holes making is among the most important operations in manufacturing, and drilling is a major and common hole-making process. In this study, drilling parameters namely cutting speed, feed and point angle as drilling parameters. Each parameter has three levels. This paper is conducted for getting the best parameter setting for minimizing thrust force, torque, surface roughness and flank wear during drilling process. Drilling tests are carried out using high speed steel (HSS). Taguchi’s L9 (33) orthogonal array is used to perform drilling of S50C steel plates. Then, combination between grey relational analysis (GRA) and Taguchi’s method is used for optimizing experiment result (multi response).Experiment result show the contribution of factors in minimizing variation of multiple response, i.e., feed (61.44%), point angle (36.62%) and cutting speed (1.22%). From an optimization result that has validated in confirmation experiment, optimal response is set at 29,94 m/min for cutting speed, 0,07 mm/rev for feed and 134º for point angle.
Isothermal Oxidation Behavior of Aluminized AISI 1020 Steel at the Temperature of 700 oC Mohammad Badaruddin; Suharno Suharno; Hanif Ari Wijaya
Jurnal Teknik Mesin (Sinta 3) Vol. 15 No. 1 (2014): APRIL 2014
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

The AISI 1020 steel was coated by dipping it into the molten Al bath at 700 °C for 16s. The coating layer formed on the steel substrate is consisting of Al with a little Fe, FeAl3 and Fe2Al5 layers. The morphologies of the FeAl3 and Fe2Al5 layers are platelet and columnar structures, respectively. The oxidation test was carried out isothermally at 700 °C for a various time of 1-49 h in static air. The oxidation behaviors of both of the bare steel and the aluminized steel were studied by the oxidation kinetics, surface morphologies and phase transformation after oxidation testing. The oxidation products were characterized using Optical Microscope (OM), Scanning Electron Microscopy with Electron Dispersive Spectroscopy (SEM/EDS) and X-ray diffraction analysis. The magnitude of the rate constant (kp) of the aluminized steel is two order lower than the bare steel. The formations of intermetallic phases on the steel substrate for a shorter time are dominated by the interdiffusion between the inward diffusion of Al-atoms into the steel substrate and outward diffusion of Fe-atoms. The constituent phases in the aluminide layer compose of FeAl2, Fe2Al5 and FeAl. The formation ofFeAlphase is controlled by the inward diffusion of Fe-atoms into the Fe2Al5 phase. The improvement of the oxidation resistance of the aluminized steel subjected to severe oxidation is due to the formation of protective Al2O3scale.
Simulasi Numerik dengan Pendekatan 3D-URANS Aliran yang Melintasi Susunan Empat Silinder Sirkular Dekat Dinding pada “Small-Gap” A. Grummy Wailanduw; Triyogi Yuwono; Wawan Aries Widodo
Jurnal Teknik Mesin (Sinta 3) Vol. 15 No. 1 (2014): APRIL 2014
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

A flow cross four circular cylinders arrangement in center-line had been many investigated by an experimentally, a simulation, as well as a visualization. The flow phenomena around the cylinders were different when its arrangement were located near a wall, especially at small gap. A boundary layer of the wall would effected a flow characteristics around the cylinders. This research was done by numerical method with FLUENT 6.3.26 software at L/D = 4.0 and G/D rasio 0.1 and 0.2 and Reynolds number 53000 based on the diameter of a single cylinder. An evolution of pressure distributions in circular cylinders, especially at the lower cylinders, are effected of a plane wall which located near them.
Pengaturan Orientasi Posisi Objek pada Proses Rapid Prototyping Menggunakan 3D Printer Terhadap Waktu Proses dan Kwalitas Produk Sobron Lubis; David Sutanto
Jurnal Teknik Mesin (Sinta 3) Vol. 15 No. 1 (2014): APRIL 2014
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Rapid prototyping can be defined as the methods used to create a scale model (prototype) from the start part of a product (part) or assembly (assembly) quickly by using the data of computer aided design (CAD) three dimensional. In the process of printing 3D objects setting is crucial to product quality and processing time is done. This research was conducted with the object orientation variation in the vertical and horizontal of the two types of polymer material ABS and PLA in order to determine the processing time and product quality. This research was carried out by using a printer 3D. From this study showed that the process of making specimens for PLA and ABS material selection object orientation in horizontal position produces a shorter process time and surface condition of surface roughness values ​​are smaller than the vertical orientation position.

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