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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 8 Documents
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Search results for , issue "Vol. 15 No. 1 (2014): APRIL 2014" : 8 Documents clear
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 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 Vol. 15 No. 1 (2014): APRIL 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

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 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 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 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.
Aplikasi Penggunaan Metode Moire Pattern untuk Mengetahui Karakteristik Sebaran Nilai Stress-Displacement pada Material Baja AISI 304 Berbasis Image Processing Mohammad Khoirul Effendi; Agus Sigit Pramono; Ari Surya Yulianto; Hanif Pribadi
Jurnal Teknik Mesin Vol. 15 No. 1 (2014): APRIL 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

Stress field is an important parameter for determining the strength of a plate due the loading. Measurement of the stress field in it cannot be done directly. The mathematic explanation shows that the stress field has a relationship with the terrain displacement/displacement. In the plate theory, deflection is defined as displacement towards out plane direction. One method to get the value of deflection on the plate is a moiré method. This moiré method uses the principle of line superposition between plate and its reference. When a test plate subjected to a load, the deflection that occurs in the test material a pattern will be produced in the form of a superposition of light and dark pattern (fringe) which describes the distribution of the stress-displacement on a surface of tested material. Tested material is AISI 304.The surface of tested material was given a lattice pattern with variations in distance of 1 mm. The fourth side of the tested plate is clamped perfectly, then the center of it will be pressurized with variations in displacement (0.5, 1, 1.5, and 2 mm). The occurred Moiré patterns will be captured by the camera to turn it into a digital image. Furthermore, it will be processed through a series of image processing which consists of the four different filter algorithms (Gaussian filter and Butterworth Low Pass Filter), and also four edge detection algorithms (Sobel, Prewitt, Canny, and Roberts).The results of the stress-strain measurements will be compared with the results of analytical calculations and numerical calculations. The difference of displacement average using ​​moiré method compared with analytical method is 6.75%, while using numerical method is 7.55%. Furthermore the difference of stress average using ​​moiré method compared with analytical calculation is 9:08%, while using numerical methods by 9.5%.
Laju Penetrasi Korosi pada Material Alternatif Bangunan Kapal Prantasi Harmi Tjahjanti; Eko Panunggal; Darminto Darminto; Wibowo Harso Nugroho
Jurnal Teknik Mesin Vol. 15 No. 1 (2014): APRIL 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

Corrosion is the event of a material damage due to undesired interactions between material and environment. Corrosion is a natural phenomenon that cannot be avoided, but that can be done is to control the corrosion process by pressing the corrosion penetration rate, so that the expected lifespan and quality durable material. Ship building alternative material used is a composite material with aluminum alloy matrix AlSi10Mg(b) a ship building materials based on European Nation (EN) Aluminum Casting (AC)-43100, and written EN AC-43100 (AlSi10Mg(b)), and mixed with reinforcement of ceramic materials is silicon carbide treatment that has been expressed by the chemical formula SiC*. Overall in writing EN AC-43100 (AlSi10Mg(b)) + SiC*. The purpose of research is to determine the rate of corrosion resistance in this composite material. Corrosion testing performed is wet corrosion test and dry corrosion. Wet corrosion test is immersion  in liquid hydrochloric acid (HCl), sodium hydroxide (NaOH), sodium chloride (NaCl), and the fluid pH = 1, 3, 5, 7, 9, 11, 13. The treatment of dry testing conducted in 2 temperature, room temperature ~270C and 1000C temperature. The results showed that immersion in liquid HCl, and the fluid pH 1, experiencing the highest rate of corrosion penetration. While the highest corrosion penetration rate in the treatment of dry corrosion test was obtained at temperatures higher than room temperature. Overall it appears that the addition of SiC*, can reduce the rate of penetration of corrosion and composite materials EN AC-43100 (AlSi10Mg(b)) +15 SiC* is a good material in the face of corrosion attack, because it has the corrosion penetration rate is lower than the standard that allowable is <0.5 mm / yr.
Analisis Perbandingan Respon Dinamik Sistem Suspensi Semi-Aktif dengan Sistem Suspensi Dynamic Vibration Absorber (DVA) Semi-Aktif Totok R. Biyanto; Yerri Susatio; Syamsul Hadi
Jurnal Teknik Mesin Vol. 15 No. 1 (2014): APRIL 2014
Publisher : Institute of Research and Community Outreach - Petra Christian University

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Abstract

There are two important matters in the suspension system that must be concern, there are comfortable and stabilityof vehicle that provide or supported by the whole suspension system. Whereas passive suspension system design only concern with comfortable or stability of vehicle with pros and cons from that aspect respectively.In the active design, the two aspect can be achieved with minimize cons respectively. However active suspension in the application iso complex and high cost. Many research looking for the solution between two systems, one of them was using dynamic vibration absorber (DVA) and semi-active suspension. ISE, IAE, and ITAE are used for performance index to achieved optimum control gain from trial error tuning with 0,001 – 10 range. The result shows that Semi-active suspension system (SSSA) with gain = 3, can  achievedmaximumovershoot reduction 28.29%, for gain = 4 maximum overshoot reduction 24.32%, and  forgain = 7maximum overshoot reduction 18.61% compared to passive suspensionin step mode.

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