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"Penggunaan kompor induksi di Indonesia saat ini masih sedikit dikarenakan kurangnya pemahaman masyarakat terhadap pengetahuan mengenai kompor induksi dan cara penggunaannya. PT. Perusahaan Listrik Negara (PLN) baru - baru ini mengadakan program konversi satu juta kompor elpiji ke kompor induksi guna meningkatkan penggunaan kompor induksi dikalangan masyarakat Indonesia. Kompor induksi menggunakan prinsip kerja dari pemanasan induksi dimana arus dengan frekuensi tinggi mengalir melalui kumparan konduktor, arus dengan frekuensi tinggi kemudian menghasilkan medan magnet disekitar kumparan. Medan magnet yang dihasilkan tersebut akan menimbulkan skin effect pada panci yang berada di atasnya. Dengan adanya skin effect maka membuat arus eddy yang timbul karena induksi mengalir pada permukaan konduktor dan melakukan pemanasan terhadap panci. Hasil dari pengujian ini adalah setting daya yang dilakukan akan berpengaruh terhadap perubahan efisiensi, energi, dan waktu pada kompor induksi. Semakin besar setting daya yang digunakan efisiensi yang dihasilkan semakin tinggi, energi yang dibutuhkan semakin kecil, dan waktu yang diperlukan semakin cepat. Disamping itu, brand pada kompor induksi berpengaruh juga terhadap performansi dari kompor induksi.

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The use of induction cookers in Indonesia is still slightly due to a lack of public understanding of knowledge regarding the induction cooker and how to use them. PT. Perusahaan Listrik Negara (PLN) recently held a program to convert one million LPG stoves to induction cookers to increase the use of induction cooker among the people of Indonesia. The induction cooker uses the working principle of induction heating where a high-frequency current flows through the coil conductor, a high-frequency current then produces a magnetic field around the coil. The resulting magnetic field will cause the skin effect on the pan above it. With the skin effect, it creates eddy currents that arise due to induction flowing on the surface of the conductor and heating the pan. The results of this test is conducted power setting will affect the efficiency change, energy, and time on induction cooker. The greater the power settings used the resulting higher efficiency, the less energy is required, and the time required is getting faster. Besides, the induction cooker brand also affects the performance of the induction cooker"

"This book provides an excellent overview of the range of applications of induction heating with methods by which conventional as well as special heating jobs can be designed around the capabilities of the process.The book discusses the theory of induction heating, tuning of induction heating circuits and load matching and summarizes major equipment considerations in designing induction heating systems. Design procedures are thoroughly covered for heat treating. The book includes a detailed discussion on fundamentals of process control for a variety of induction heating issues."

"Proceedings of the 19th ASM Material Solution Conference, Cincinnati, Ohio, November 1-4, 1999. Topics include control of microstructure through heat treatment, equipment/processes, forge heating with induction, and quenching and distortion. Also included are papers from 'Steel Heat Treating in the New Millennium: An International Symposium in Honor of Professor George Krauss.' Softcover"

"Lembaga pendidikan tinggi dituntut untuk mengikuti perkembangan global yang terjadi. Oleh karena itu, lembaga pendidikan tinggi harus memiliki laboratorium yang dapat diberdayakan untuk meningkatkan mutu pendidikan. Salah satu pemberdayaan di Departemen Metalurgi Dan Material Fakultas Teknik Universitas Indonesia adalah pengaktifan mesin uji Melt Flow Indexer pada Laboratorium Polimer dengan meneliti pengaruh waktu pemanasan awal dan massa sampel terhadap hasil uji MFI Polietilena Densitas Rendah Linier3120.Proses pengujian indeks alir lelehan dimulai dari pemasangan bagian-bagian peralatan pada mesin uji, pemasukan data parameter pengujian, pemanasan awal barel, pemasukan sampel dan penekanannya, pemanasan awal sampel, pemotongan ekstrudat, dan penimbangan ekstrudat.Dalam penelitian ini digunakan 3 variasi waktu pemanasan awal sampel dan 4 variasi massa sampel. Waktu pemanasan awal yang digunakan adalah 4, 5, dan 6 menit, sedangkan massa sampel yang digunakan adalah 2.75, 2.85, 3, dan 4 gram. Pengambilan variasi-variasi tersebut berdasarkan ASTM D1238.Hasil pengujian menunjukkan bahwa semakin lama waktu pemanasan awal, maka nilai indeks alir lelehan semakin tinggi karena semakin lama polimer terkena panas, semakin turun nilai viskositasnya. Sedangkan massa sample tidak memiliki pengaruh pada hasil indeks alir lelehan, tetapi mempengaruhi keberhasilan pengujian, karena massa sampel yang masuk ke barel mempengaruhi jumlah gelembung udara pada ekstrudat di samping penekanan sampel.Waktu pemanasan awal sampel yang optimal dari hasil pengujian adalah 4 menit untuk sampel Polietilena Densitas Rendah Linier 3120 dengan hasil 1.0407 g/10 menit yang paling mendekati nilai MFI spesifikasi material yaitu 1 g/10 menit sesuai dengan literatur, sedangkan massa sampel optimal adalah 3 gram. Massa sampel tidak boleh kurang dari 3 gram agar pengujian memiliki massa tambahan untuk membawa gelembung udara keluar, dan tidak boleh melebihi batas itu agar tidak diperlukan penekanan manual pada piston untuk sampai ke piston support sebelum waktu pemanasan awal berakhir.

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Higher educational institution are demanded to follow the nowadays global development. In order to obtain this purpose, they must have functionalized laboratories to increase the educational quality. One of the functionalization in the Department of Metallurgy and Material Faculty of Engineering-University of Indonesia is the activation of Melt Flow Index testing machine in Laboratory of Polymer by investigating the effects of pre-heating time and sample mass to the melt flow index testing result of Linear Low Density Polyethylene 3120.The melt flow index testing process starts with the attachment of parts to the machine, entering testing parameters, pre-heating barrel, sample feeding, preheating sample, extrudates cutting-off, and extrudates weighing. In this research project, three variables of pre-heating time and four variables of sample mass are investigated. The pre-heat times used are 4, 5, and 6 minutes, and sample masses used are 2.75, 2.85, 3, and 4 grams. These variables are designed based on ASTM D1238.The testing results show that the higher the pre-heat time, the higher the melt flow index value will be. This is because the longer the polymer is exposed to heat, the lower the viscosity. Meanwhile, the sample mass has no effects to melt flow index value, but it affects the testing process itself. That is because the sample mass fed to the barrel affects the number of bubbles in the extrudates in addition to the sample pressing.On the basis of the testing results, it is known that the optimal pre-heating time is 4 minutes for Linear Low Density Polyethylene 3120, as it results in the closest value of 1.0407 g/10 mins to the specification of the material which is 1 g/10 mins based on the literature. The optimal sample mass is 3 grams, since it is sufficient to provide the excess polymer to repel bubbles out and to enable the the piston to reach to the piston support in the range of pre-heating time without manual pressing."

"Pengendalian motor induksi tiga fasa dapat dilakukan dengan metode kendali skalar. Metode ini digunakan karena memiliki struktur kendali yang sederhana, cepat dan mudah di program serta dapat dioperasikan dengan loop terbuka tanpa pengendali kecepatan sehingga secara ekonomis Iebih murah. Frekuensi rendah yang diberikan oleh sumber menyebabkan terjadinya drop tegangan pada rangkaian rotor dan slip yang semakin besar. Drop tegangan akan mengurangi fluks yang akan menginduksikan rotor, sehingga torsi elektromagnetik yang dihasilkan berkurang dan bila besarnya kurang dari rorsi yang dibutuhkan untuk memutar rangkaian rarer, maka rotor tidak drupal berputar. Untuk memperbaiki masalah ini diperlukan kompensasi untuk drop tegangan dan frekuensi slip.Skripsi ini akan membahas pengaruh penambahan kompensator pada metode kendali loop terbuka dan metode dengan pengendali Pl, dengan melihat parameter tanggapan waktu sistem pada frekuensi rendah. Pengujian dilakukan tanpa beban dan dengan variasf beban dengan program MATLAB SIMULINK C MEX S-Function."

"Motor Induksi tiga fasa merupakan salah satu jenis motor listrik, yang membutuhkan sumber tegangan listrik tiga fasa secara seimbang dalam pengoperasiannya. Tegangan suplai tiga fasa yang tidak seimbang dapat mempengaruhi kinerja dari motor induksi tiga fasa pada saat beroperasi. untuk menganalisis pengaruh ketidakseimbangan tegangan terhadap daya motor induksi, dilakukan pengukuran data tegangan dan besar sudut fasanya. Dari data tersebut akan dianalisis daya disipasi yang hilang berdasarkan komponen urutan simetris Fortesque. Komponen simetris Fortesque akan memberikan nilai tegangan urutan positif dan negatif. Kemudian dari nilai tegangan urutan positif dan negatif tersebut akan dianalisis performa motor induksi yang diuji, terkait dengan parameter daya disipasi, dan efisiensi motor. Berdasarkan data sampling tegangan antar fasa yang diambil secara acak, besar efisiensi motor yang menggunakan parameter ketidakseimbangan tegangan selalu lebih rendah dari efisiensi motor yang hanya menggunakan parameter tegangan antar fasa, arus, dan faktor daya. Besar selisih efisiensi tersebut sebesar 2.87% pada pompa DR-2, 4.78% untuk motor pompa DR-3, dan sebesar 9.3% untuk motor pompa Intake.

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Three Phase Induction Motor is a kind of electric motors which is need to be supplied by balanced electrical voltage source for its operation. Unbalanced three phase input voltage can affect induction motor performance when it operate. To analyze unbalanced voltage correlation with induction motor's power, input voltage and its phase are measured. From that data, we will analyze dissipation power / power losses by Fortesque's Symmetrical Component. Fortesque Symmetrical Component will give a value of positive sequence voltage and negative sequence voltage. Thus, Induction motor performance in terms of dissipated power and efficiency will be analyzed by positive and negative sequence voltage value.

Value of Motor's efficiency which use unbalanced voltage as a main parameter always smaller than motor's efficiency that calculated by three-phase power parameter, such as line voltage, current voltage, and power factor. Motor's efficiency margin on each motor are 2.87% for DR-2 Motor, 4.78% for DR-3 Motor, and 9.3% for Intake Motor."

"Provides the latest knowledge and information on scientific advances, techniques, innovations, and commercial practice in heat treating.Sixty-six papers from the November 2001 conference in Indianapolis represent the current status of heat treatment technology. Particular attention is given to atmospheric research, brazing technology, equipment design and energy minimization, microstructure evolution, induction process technologies, etc."

"Contents :- A Heat Treatment Information Tool for the Internet - Proper Selection of Annealing Atmospheres for Electrical Steels - An Introduction to Atmosphere Furnace Safety - Temperature Influence on the Flammability Limits of Heat Treating Atmospheres - Furnace Control Systems and Components to Improve Throughput and Reduce Cost - Process Characterization of Furnace Brazing Through Statistically Designed Computer Simulations* - New Method of Heat Treatment Using the Wave Technology - State of the Art Integrated Heat Treatment Cell for Today's Manufacturing Environment - Why Use Composite Radiant Tubes? - The Heat Treating Global Challenge Heat Treatment Technology Today and for Future - The Top Ten Ways To Keep Your New or Used Carburizing and Hardening Equipment Operating at Maximum Performance and Efficiency - Determining and Improving the Uncertainty of Rockwell Hardness Tests - A new method of reducing NOx emissions from Heat Treatment Furnaces - Taking Control of Your Combustion System - 22ND ASM Heat Treat Conference 2003 George Pfaffmann Honorary Symposium: Induction Heat Treating, What Is Important to Remember - Chemistry of Quenching Part 3– Energy Conservation By Utilization of the Thermal Content of Steel for Surface Modification - Induction as a Source of Heat - Finite Element Analysis of Induction Hardening Process of Steel - Using Numerical Simulations to Determine the Effect of External Fluid Flow on Heat Transfer Rates in Heat Treating Operations - Process Monitoring to Reduce/Eliminate Destructive Testing in Induction Heat Treating. - A Computer Aided Heat Treatment Planning System - Optimization of an Aluminum Alloy Quenching Process in Polyalkylene Glycol Polymer Solution using Taguchi Method - Chemistry of Quenching Part I – Fundamental Interfacial Chemical Processes Involved in Quenching - Critical Heat-Flux Densities, Quenching Intensity and Heat Extraction Dynamics During Quenching in Vaporizable Liquids - Chemistry of Quenching Part 2– Fundamental Thermophysical Processes Involved in Quenching - Application of Intensive Quenching Processes for Carburized Parts - Quench Rate Effects on the Natural Aging Behavior of 7XXX Al-Mg-Zn-Cu Aluminum Alloys - The QuenchMiner™ Expert System for Quenching and Distortion Control - Effect of Quenching Variables on Distortion and Residual Stresses - Influence of Test Conditions on the Cooling Curve Response of Polymer Quenchants (Tensi Agitation Device) - The Effects of Carbon Profile and Quenching Condition on Dimensional Change of Carburized Steel Rings - Advances in Quenching- A Discussion of Present and Future Technologies - Low Pressure Vacuum Carburizing and Accelerated Gas Carburizing - Thermochemical Treatments with Added Corrosion Protection and Wear Protection - Kolsterising – Improving Austenitic Stainless Steel - Status of Chromate Metal Pretreatment Replacement Research at the University of Cincinnati - Nitreg & ONC Where Corrosion Resistance & Wear Requirements Finally Meet - Applications of Vacuum Tempering - Diamond Coated Cutting Tools for Biomedical Applications - FineCarb - the Smart System for Vacuum Carburizing - Laser Micromachining of Stainless Steels for Biomedical Applications - Improved Corrosion Protection of Aluminum Alloys by Electrodeposited Silanes - Atomic Force Microscopy Study of Biaxially-Oriented Polypropylene Films - Characterization of a Chromium-Manganese(16CrMn5)Steel Carburized and Hardened in Different Quenchants - Corrosion Resistance Properties of Ormosil Coatings on 2024-T3 Aluminum - Mechanical Properties of Electroformed Nickel Cobalt Alloys - Utilisation of Fly Ash to Develop Hot Corrosion and Wear Resistant Coatings - Effect of Superficially applied Oxides on the Hot Corrosion behaviour of Feand Ni- base Superalloys in Na2SO4-60%V2O5 - Electrochemical Planarization of Patterned Copper Films for Microelectronic Applications - Environmentally Assisted Fatigue Crack Growth Rate Testing with Corrosion Prevention Compounds - Corrosion Resistant Films from Trivalent Chrome Based Solutions Applied to Electrodeposited Zinc and Zinc Alloys. - Electrodeposition and structural investigation of Antimony Telluride phases - Novel, Water-Based High-Performance Primers that can Replace Metal Pretreatments and Chromate-Containing Primers - Infrared Heat Treatment of Ti-6Al-4V with Electroplated Cu - Preparation of Cu Coatings on the Surface of Acrylonitrile-Butadiene- Styrene (ABS) by Sputter Deposition and Electroless Plating - Plasma Alloying and Spheroidization "