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Teng Sutrisno
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tengsutrisno@petra.ac.id
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+6231-2983139
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tengsutrisno@petra.ac.id
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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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Development of a Vibration Powered Micro Generator and its Application to Harvest the Vibration Energy of the KRI KKP-811’s Engine Harus L.G.; Wiwiek Hendrowati; Rahmat Susanto
Jurnal Teknik Mesin (Sinta 3) Vol. 12 No. 2 (2010): OCTOBER 2010
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Vibration energy harvesting has been receiving a considerable amount of interest as a means of powering wireless sensors and low-power devices. In this paper, an energy harvester is presented to convert ambient mechanical vibration into electrical energy employing magnetoelectric generator. The harvester uses single magnet-spring attached on the coil. When the harvester is excited, the magnet moves relative to the coil, undergoes magnetic field variations and produces a power output. To obtain a maximum power output, the mass of magnet is varied. The magnetoelectric generator with various masses of magnets was tested by a harmonic exciter with various frequencies and amplitudes. The one with maximum power output was then applied to harvest the ambient vibration energy of KRI KKP-811’s Engine. The results show that this prototype can harvest maximum energy of 2μW when it is placed at the base/foundation of the engine.
Pengurangan Hambatan Aliran pada Celah Silinder Koaksial Akibat Slip Yanuar .; Gunawan .; M. Baqi
Jurnal Teknik Mesin (Sinta 3) Vol. 12 No. 2 (2010): OCTOBER 2010
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Slip effect which occurs at the wall due to the layer of water repellent wall can reduce the pressure drop. The highly water repellent wall coating on the inside coaxial viscometer slip will be occur. The aim of experiment is proving drag reducing of the torque on the cylinder and the coefficient of velocity slip due to the water repellent coating on the wall. Teflon and wax materials are used to coat the surface of the wall. Contact angle of water droplets with a Teflon-coated walls and waxed each of about 110º and 130º into flat surface. The ratio of the radius of inner cylinder and outer cylinder are 0.932 and 0.676. Glycerin solution with concentration 60%, 70% and 80% wt used the test fluid. The maximum drag reduction occurred is 12% for 80% wt glycerin solution at the 0.932 ratio of the radius. The calculation analysis of the moment coefficient fit with experimental data.
Ketidakstabilan Aliran Sekunder pada Saluran Lengkung Berpenampang Persegi Nursubyakto .
Jurnal Teknik Mesin (Sinta 3) Vol. 12 No. 2 (2010): OCTOBER 2010
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Secondary flow is the counter rotating vortex that appears in the channel when a fluid flows in a curved channel. The occurence of this secondary flow is caused by imbalance between centrifugal force and pressure on the outer wall of the channel. When Dean number is increased the additional secondary flow appears to the main secondary flow and/or disappears. This paper investigated the occurence of the additional secondary flow to the main flow with rectangular cross section and the radius of curvature varied from 1 to 10. The result shows that increament of curvature ratio the additional Dean voritces appears and beyond of ratio of 4 is constant. The effect of the additional secondary flow to the friction factor is also predicted.
Unjuk Kerja Kolektor Surya dengan Absorber Bentuk V yang Dilengkapi Honeycomb dengan Beberapa Aspek Rasio Ekadewi A. Handoyo; Niko Aris Sudiyanto; Prabowo Prabowo; Djatmiko Ichsani
Jurnal Teknik Mesin (Sinta 3) Vol. 12 No. 2 (2010): OCTOBER 2010
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

A simple apparatus using solar radiation that is essential for people in tropical area like Indonesia is called solar collector. A solar collector can be applied to heat air which can be used to dry some crops or agricultural products. One of some effort to improve the solar collector performance is using a v-corrugated absorber plate or installing slats in a honeycomb shape over the absorber to reduce heat loss. This paper will describe the combination of both. From the research, it was found that a solar collector with v-corrugated absorber plate has its best performance when the velocity of air is 0.5 m/s with aspect ratio H/L = 3/1. The performance includes the collector efficiency and the increase temperature of air flowing through the collector.
Pemodelan Ciri Getaran Teoritik dan Eksperimental Berbasis Kerja Gaya pada Mesin Reciprocating Fransiskus Louhenapessy; Achmad Zubaydi; Suhardjono .; I Made Ariana; A.A. Masroeri
Jurnal Teknik Mesin (Sinta 3) Vol. 12 No. 2 (2010): OCTOBER 2010
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

This study aims to model vibration response characteristics of theoretical and experimental work based force of dynamic components in reciprocating mesins. The method used was to analyze force that accumulates on main bearing area of theoretical, experimental vibration signal reconstruction and validation. Modeling involves process compression force that causes compression force and inertia force. The analysis uses a mathematical formulation of Newton are mesinered to produce a dynamic force. Results indicate that maximum total force accumulated in main bearing is 194.4 N and 29.7 N vertical direction and horizontal direction. Results of analysis theoretical and experimental vibration signals are validated by first reconstructing experimental vibration signal, in time domain and frequency to eliminate noise signals using Matlab software. Results of the validation process obtained clearance to bearing C1 = 60 μm, this value is accordance with measurement of bearing clearance dimensions manually. Modelling vibration characteristics can be used for treatment of mesin vibration signal monitoring based on scheduled.
Sistem Pendingin Paksa Anti Panas Lebih (Over Heating) pada Rem Cakram (Disk Brake) Kendaraan Joni Dewanto; Andreas Andreas Wijaya
Jurnal Teknik Mesin (Sinta 3) Vol. 12 No. 2 (2010): OCTOBER 2010
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Until now, the vehicle brakes are not usually equipped with a special cooling system, so that the release of heat into the air occurs naturally. When used continuously, the brakes can suffer damage as a result of the occurrence of over-heating. This condition is potentially causing a fatal accident. Physically, the over-heating often occurs in type disc brake, because the heat transfer surface is less proportionately, especially for high braking loads. This research aims to develop a brake disc with an active cooling system to prevent overheating. The system is applied to a simulated model of disc brakes empirically. The test was conducted at several levels of constant disc speed and breaking force. The results of this research indicate that at various braking load, the development of disc brakes with an active cooling system in the form of water vapor that is sprayed, can control the brake temperature rise and prevent over-heating.
Performance of Organic Rankine Cycle in Different Refrigerants for Low Temperature Geothermal using Delphi Program Prabowo .; Andre G.T.; Ekadewi .
Jurnal Teknik Mesin (Sinta 3) Vol. 12 No. 2 (2010): OCTOBER 2010
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

A software has been developed in a Windows-based Delphi programming for analyzing the influence of the transport and thermodynamic properties of the refrigerants on the performance of the Organic Rankine Cycle (ORC). Its user-friendly drag and drop icon format and excellent color graphics make it an interactive tool for teaching and the preliminary design of the ORC system. The research was carried out by analyzing the performance of the system components and the overall ORC based on the several working fluids within R22, R123, R134a and RC318. The pressure of evaporator was varied in two steps 7 and 12 bar, while the condenser was kept constant pressure at 1 bar. The turbine inlet temperature was varied in the range 100 0C to 140 0C where the various isentropic efficiency inputs were applied for pump and turbine. By increasing turbine inlet temperature, R22 has the highest turbine work output and cycle efficiency. Contrary, RC318 has the lowest cycle efficiency and decreases trend with enhancing in turbine inlet temperature. RC318 has low latent heat of vaporization thus vaporizes under relatively very low evaporator heat supply.
Pemodelan dan Simulasi Urutan Pengelasan Bilah Roda Traktor Berbasis Metoda Elemen Hingga Suryadiwansa Harun; Yanuar Burhanuddin
Jurnal Teknik Mesin (Sinta 3) Vol. 12 No. 2 (2010): OCTOBER 2010
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

This paper discusses the modelling and simulation of welding process based on the finite element method (FEM) in order to predict the welding distortion of tractor wheel blades. Two FEM modellings are needed to obtain the welding distortion models, namely thermal and elasto-plastic. The effect of welding thermal is assumed as tendon force and to be used as input of the analysis of elasto-plastic modelling. Welding distortion simulation results were verified using the experimental data. The verification results have shown similar shape of the welding deformation between simulations and experimental. Also, deviation value of displacement distortion between simulation and experimental is small. Hence, the simulation of welding deformation modelling using thermal elasto-plastic FEM can be used to predict the welding distortion of tractor wheel blades. Based on simulation results, the shape of radial and axial displacement distortion due to welding the blade with serial sequence was larger than that of the shape distortion due to welding of the blade with a recommended sequence. After welding simulation of those of 16 wheels tractor blades, the predicted value of displacement distortion due to welding of the blade with serial sequence is equal to 3,393mm, which was larger than that of 1,440mm due to welding of the blade with recommended sequence.
Thermal Characteristics Evaluation of Vegetables Oil to be Used as Phase Change Material in Air Conditioning System Yuli S. Indartono; Aryadi Suwono; Ari D. Pasek; Didin Mujahidin; Irfansyah Rizal
Jurnal Teknik Mesin (Sinta 3) Vol. 12 No. 2 (2010): OCTOBER 2010
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

In a typical commercial building, air conditioning system consumes around 60% of building’s electricity. By looking at that number, it is clear that effort to suppress building energy consumption should be directed to air conditioning system. Recently, phase change substances, such as ice slurry, receive broad attention since the substances has ability to save energy in hydronic cooling system. Previous experiments by author showed that certain phase change material, i.e. trimethylolethane trihydrate, is able to save energy of a chiller. However, in Indonesia, the material is quite expensive. In this research, applicability of some lower-price materials, i.e. mixture of vegetables oil and biodiesel, as phase change material in secondary refrigerant were evaluated. Some thermal characteristics, such as freezing and melting temperatures, and also latent heat of the oils are explained in this paper.
Degradation of Aluminide Layers During Cyclic Oxidation of Ferritic 430 Stainless Steel Mohammad Badaruddin
Jurnal Teknik Mesin (Sinta 3) Vol. 13 No. 1 (2011): APRIL 2011
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

In order to increase the performance of the preferred Ferritic 430 SS for manufacturing automobile and motor-cycle exhaust systems. The aluminizing coating on the surface of bare steel was applied by hot-dipping method in a molten pure aluminum. The high temperature oxidation of the aluminized steel was cyclically studied at 900 °C and 1000 °C in static air. The degradation of intermetallic layers during cyclic oxidation were analyzed by means of X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy (EDS). The crack perpendicular to the specimen surface rapidly propagated through the FeAl and Fe3Al layers due to a thermal expansion mismatch upon cooling to room temperature. The accumulation of voids generated crack at the interface between the aluminide layer and the steel substrate. Oxygen is allowed to penetrate into the aluminide layer crack, rapidly forming alumina oxide and closing the crack. Some of the aluminide layers peeled off due to this rapid growth. Thus, the protective Al2O3 layer degraded and later, the substrate was oxidized subsequently to form iron-rich oxide (Fe2O3) at 1000 °C.

Page 22 of 30 | Total Record : 295

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