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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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Simulasi dan Eksperimental Isothermal Aliran Eksternal Resirkulasi pada Up-Draft Gasifier Fajri Vidian; Hery Prabowo; Yulianto .; Adi Surjosatyo; Yulianto Sulistyo Nugroho
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

Gasification process at updraft gasifier produces greater amount of tar than other type of gasifier. To reduce tar at updraft gasifier, the pirolysis gas will be re-circulated to combustion zone and to exhaust gas from reduction zone. Recirculation of pirolysis gas to combustion zone can be carried out by using ejector. Ejector is an equipment used to inject the secondary fluid flow by the movement of momentum and energy from high speed primary flow (jet). The research conducted with isothermal 3D simulation using CFD and experimental investigation of recirculation flow using ejector at updraft gasifier. Ejector velocity for simulation and experimentation is constant at 0.6 m/s. Ejector’s nozzle exit position (NXP) direction will be varied. The goal of this research is to obtain information of optimal nozzle exit position for producing maximum velocity of gas recirculation. The result of simulation and experiment shows that the change of nozzle exit position direction to – x axis from zero point, it will give maximum velocity of gas recirculation flow with the optimum position of nozzle exit position at the range of -3 to -4 cm from zero point.
Pengembangan Sistem Suplai Brown Gas Model 6 Ruang Tersusun pada Mesin Mobil 1300cc dengan Sistem Karburator Harus Laksana Guntur; Rasiawan .; B. Sampurno; I Nyoman Sutantra
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

Brown gas, known as H2O2 (Oxyhydrogen) obtained from electrolysis process can be mixed with gasoline and used in the internal combustion engines. Uncontrolled mixing of Brown gas in the internal combustion engines reduces the quality of burning (engine performance). In this paper, the development and application of the Brown gas generator with 6 chambers in series-equipped with controller is reported. The gas production rate was controlled by regulating the supply current using Pulse Width Modulation (PWM). The characteristic of the Brown gas supply system was tested for various concentrations of the catalyst (KOH) and temperatures. The Brown gas supply system was then applied to the carburetor type engine of 1300 cc and the engine performance was tested. The test results show that the maximum production of gas occurred at 30% of catalyst (KOH) and the production of gas is proportional to the room temperature. The engine performance test result show a 30% reduction of specific fuel consumption after installation of the Brown gas supply system to the engine. The emission test results show 0.67% to 0.12% reduction of CO and 16.9% to 15.5% reduction of CO2.
Pengembangan Metode Integrasi Numerik dengan Frekuensi Batas yang Mampu Mereduksi Pengaruh Sinyal Pengganggu terhadap Hasil Integrasi Zainal Abidin; Fandi Purnama; Budi Heryadi
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 vibration measurements, integration process is often performed to acceleration as well as velocity signals. This integration process is usually done numerically in DSA (Dynamic Signal Analyzer) so that the result of integration has error with respect to the true (theoretical) value. Therefore, development of numerical integration methods with cutoff frequency are presented in this paper. This development produces equations which can reduce the influence of noise with respect to the result of numerical integration. Furthermore, these equations are validated with the simulation and experiment results. Base on the validation results, it can be concluded that the equations which have been derrived are correct.
Korelasi Empiris Perpindahan Kalor Dua Fase (Air Udara) Aliran Kantung Gas dalam Pipa Horisontal Sirkular Matheus M. Dwinanto
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

This research aimed at determining the heat transfer correlation of a heated non-boiling two phase flow consisting of air and water in a horizontal round pipe. The test section was a 24 mm ID cooper pipe with a length 1 m, and the heat transfer data a uniform wall heat flux boundary condition ranging from about 5968,17 to 10503,97 W/m2. From this research, it can be concluded that heat transfer coefficient of two-phase flow of bubble flow is increase as increase of gas superficial velocity and liquid superfisial velocity. The comparison deviation standart between heat transfer coefficient of two-phase flow experimental and heat transfer coefficient of two-phase flow correlation that proposed is 34%, but this deviation is still in limited value for experimental research.
Sensitivity Analysis of Flutter of A Two-Degree of Freedom Linear Aeroelastic System Riccy Kurniawan
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

This paper deals with the problem of the aeroelastic stability of a typical aerofoil section with two degrees of freedom induced by unsteady aerodynamic loads. A method is presented to model the unsteady lift and pitching moment acting on a two dimensional typical aerofoil section, operating under attached flow conditions in an incompressible flow. Starting from suitable generalisations and approximations to aerodynamic indicial functions, the unsteady loads due to an arbitrary forcing are represented in a state-space form. From the resulting equations of motion, the flutter speed is computed through stability analysis of a linear state-space system. The sensitivity analysis of the aeroelastic stability boundaries to the structural parameter is evaluated. The results show that the parameter with the greatest influence on flutter speed is the center of gravity.
Karakteristik Distribusi Temperatur Build Part pada Proses Pressureless Indirect Sintering Susilo Adi Widyanto; Syaiful .
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

Curling phenomenon on rapid prototyping (RP) product is an actual problem which has not been solved clearly, also on MMD-Is product. Previous experiment showed, it was caused dominantly by un-uniformity of temperature distribution in build part system when sintering was executed. Differ to the sintering process in the common commercial RP process, sintering process in MMD-Is is conducted in supporting powder media. The research is aimed to observe the effect of supporting powder materials, particle size and configuration of heater system on temperature distribution of the build part. Temperature distribution was measured by immersing thermocouples into supporting powder in vertical and horizontal formation. The experimental results show that the un-uniformity of the build part temperature is caused by secondary heating phenomenon by piston material at base position.
Penggunaan Jerk untuk Deteksi Dini Kerusakan Bantalan Gelinding dan Pemantauan Kondisi Pelumasan Zainal Abidin; Budi Heryadi
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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This paper describes the use of jerk signal, a signal obtained from differentiation of the acceleration signal with respect to time, for detecting the early damage of a bearing and bad lubrication conditions. The use of jerk signal is expected to result more sensitive detection than that obtain using acceleration signal. To prove this hypothesis, this paper shows the results of vibration measurement for needle bearings and taper roller bearings with variation of load level, types of bearing damage, and lubrication condition. Comparisons of acceleration and jerk signals are performed in both time domain, by comparing their RMS values, as well as in frequency domain, by comparing their spectrums. The results of the experiment show that the use of jerk signal can give a more sensitive result in detecting bearing damage than that produced using acceleration signal. Moreover, the use of jerk signal can lead to better results in detecting bad lubrication of rolling bearing than that obtain using Crest Factor (CF) value.
Performa dan Karakteristik Emisi Gas Buang Mesin Diesel Berbahan Bakar Ganda Arifin Siagian; Mawardi Silaban
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

Today’s the global warming of the earth and atmospheric pollution caused by combustion engines has become a social problem. Further more, the dependence on fossil fuels is expected to be reduced, and therefore more expensive, because of dwindling availability. This paper discusses on a conventional diesel engine, i.e., compression ignition piston combustion engine (compression ignition) that related to the polution and efficiency. A diesel engine is operated by injecting a bit of diesel as a trigger ignition only, Fuel Gas (CNG) as fuel staple together the air flow through the mixer in the intake port into the cylinder combustion engine. In this case the engine performance test using each of the two types of fuel gas, ie propane (C3H8) and hydrogen (H2), with a percentage that varies. For comparison, the operation of the engine with standard fuel (diesel 100%, single-fuel) were also performed. This performance test includes analysis of the pressure in the cylinder, exhaust gas emission characteristics, and thermal efficiency. Heat release rate (rate of heat release) was calculated from the derivative of the pressure measurement results in the cylinder. As a result, it has been known that; exhaust emissions on operating conditions with both gas fuel (propane and hydrogen), each of which produce smoke (smoke or soot or Particulate Matter, PM), hydrocarbons (HC), carbon monoxide (CO), carbon dioxide (CO2) and nitrogen oxides (NOx), which decreased significantly, but the thermal efficiency slightly decreased.
Prediksi Ignition Delay Mesin Diesel Berbahan Bakar Ganda Arifin Siagian; Mawardi Silaban
Jurnal Teknik Mesin (Sinta 3) Vol. 14 No. 1 (2013): APRIL 2013
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Pada mesin diesel ada tenggang waktu antara sejak dimulainya penginjeksian solar (periode injeksi) ke dalam silinder bakar mesin, kemudian terbentuk campuran udara+embun solar sampai terjadi titik api yang mula-mula atau periode pengapian. Tenggang waktu atau keterlambatan pengapian ini disebut ignition delay. Ignition delay adalah suatu parameter yang sangat berpengaruh terhadap awal sampai akhir proses pembakaran di dalam silinder bakar mesin, oleh sebab itu sangat menentukan performa dan emisi gas buang mesin. Pada pengujian di sini, sebagai mesin berbahan bakar ganda.Bahan Bakar Gas (BBG), yaitu; propana, metana, dan hidrogen masing-masing dialirkan ke dalam silinder bakar mesin diesel konvensional, setelah bercampur dengan udara oleh sebuah mixer yang ditempatkan di dalam intake port. Kemudian bahan bakar solar disemprotkan langsung ke dalam silinder mesin dengan jumlah kecil (hanya sebagai pemicu api saja), dan ignition delay solar yang diinjeksikan tersebut dengan periode injeksi yang bervariasi dianalisis dan dievaluasi. Pada penelitian ini telah dilakukan dan ditemukan model perhitungan untuk memprediksi ignition delay, yaitu dengan menerapkan persyaratan autoignition Livengood-Wu (Livengood dan Wu, 1955). Dengan didapatkannya model perhitungan untuk memprediksi ignition delay ini maka diharapkan dapat mempermudah dan meningkatkan akurasi hasil yang didapat di dalam penelitian pada level simulasi khususnya pada bidang mesin diesel.
Peningkatkan Penetrasi Pengelasan pada Las TIG (Tungsten Inert Gas) Menggunakan Pengaruh Medan Elektromagnetik Ario Sunar Baskoro; Tuparjono .; Erwanto .; Winarto .
Jurnal Teknik Mesin (Sinta 3) Vol. 14 No. 1 (2013): APRIL 2013
Publisher : Institute of Research and Community Outreach, Petra Christian University

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Abstract

Pengelasan Tungsten Inert Gas (TIG) adalah salah satu pengelasan yang memiliki kelebihan dari berbagai macam proses pengelasan yang membutuhkan kepresisian dan mutu yang baik. Pengelasan TIG banyak digunakan untuk pengelasan pelat tipis karena pem¬bentukan busur yang kecil dan area yang dipanasi menjadi minimal sehingga mengurangi masalah penggunaan energi listrik dan distorsi pada pelat. Pada penelitian ini dilakukan percobaan dengan meletakkan solenoid magnetik di sekeliling obor las TIG. Pemanfaatan medan elektromagnetik ini dilakukan pada keadaan statis dan dinamis. Fenomena yang terbentuk akan diamati dengan menggunakan kamera sehingga diketahui pengaruh efek medan elektromagnetik bagi efiensi pengelasan pada saat pencairan logam las. Hasil dari penelitian menunjukkan pengaruh dari efek elektromagnetik pada pembentukan busur yang lebih stabil dan mengecil dengan penetrasi las yang dalam. Pengelasan ini juga menggunakan daya yang lebih rendah sehingga didapatkan efisiensi pemakaian energi listrik dan membatasi pemanasan yang lebih tinggi.

Page 23 of 30 | Total Record : 295

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