ICALEO 2012 Paper #203 (Comparison of Keyhole Characteristics Obtained by Two Experimental Methods: The "Direct Observation of Drilled Hole" Method and the "Sandwich" Method)
Comparison of Keyhole Characteristics Obtained by Two Experimental Methods: The “Direct Observation of Drilled Hole” Method and the “Sandwich” Method
Authors:
Simone Matteï, Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS / Univ. de Bourgogne; Le Creusot France
Jean-Marie Jouvard, Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS / Univ. de Bourgogne; Le Creusot France
Massaud Mostafa, Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS / Univ. de Bourgogne; Le Creusot France
Iryna Tomashchuk, Laboratoire Interdisciplinaire Carnot de Bourgogne, UMR 6303 CNRS / Univ. de Bourgogne; 71200 Lez Creusot France
...$28.00
ICALEO 2012 Paper #202 (Development of an Azimuthally Polarized All-in-One Pulsed CO2 Laser for Microdrilling)
Development of an Azimuthally Polarized All-in-One Pulsed CO2 Laser for Microdrilling
Authors:
Masamori Endo, Department of Physics, Tokai Univ.; Hiratsuka Japan
Motoi Sasaki, Research & Development Dept., SBY Group Production & Information Division, Shibuya Kogyo Co., Ltd.; Kanazawa Japan
Ryoji Koseki, Research & Development Dept., SBY Group Production & Information Division, Shibuya Kogyo Co., Ltd.; Kanazawa Japan
Presented at ICALEO 2012
Applications of cylindrically polarized laser beams are of interest since they are believed to have superior machining characteristics. For drilling, it has been proven that azimuthally polarized beam can drill at faster rate and th...$28.00
ICALEO 2012 Paper #201 (Pulse Shaping During Laser Percussion Drilling by Using Fiber Laser Radiation)
Pulse Shaping During Laser Percussion Drilling by Using Fiber Laser Radiation
Authors:
Hermann Uchtmann, Lehrstuhl fuer Lasertechnik RWTH Aachen Univ.; Aachen Germany
Jens Dietrich, Lehrstuhl fuer Lasertechnik RWTH Aachen Univ.; Aachen
Ingomar Kelbassa, Lehrstuhl fuer Lasertechnik RWTH Aachen Univ.; Aachen Germany
Presented at ICALEO 2012
Laser percussion drilling is commonly used for drilling holes such as cooling holes in the aerospace industry. Flash lamp pumped Nd:YAG laser sources are state of the art for drilling. For a short time pulsed diode pumped laser sources such as fiber lasers with high average power are available, coming along with benefits due to the ...$28.00
ICALEO 2012 Paper #1909 (Study on Temperature Dependence of Recoil Pressure Near the Boiling Temperature - Towards Better Modeling and Simulation)
Study on Temperature Dependence of Recoil Pressure Near the Boiling Temperature - Towards Better Modeling and Simulation
Authors:
Koji Hirano, Instrument & Control R&D Div., Process Technology Center, Technical Development Bureau, Nippon Steel Corporation; Futtsu-City, Chiba Japan
Remy Fabbro, PIMM Laboratory, CNRS-Arts et Métiers ParisTech; Paris France
Maryse Muller, PIMM Laboratory, CNRS-Arts et Métiers ParisTech; Paris France
Presented at ICALEO 2012
Nowadays it is widely accepted that recoil pressure is an important driving force of molten material in various laser material processing. However, we do not fully understand the physical processes that occur around ...$28.00
ICALEO 2012 Paper #1908 (Towards a Quantitative Model for Porosity Predication in CO2 Laser Welding of Titanium Alloy Sheets)
Towards a Quantitative Model for Porosity Predication in CO2 Laser Welding of Titanium Alloy Sheets
Authors:
Shengyong Pang, State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong Univ. of Science & Technology (HUST); Wuhan Peoples Republic of China
Weidong Chen, State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong Univ. of Science & Technology (HUST); Wuhan Peoples Republic of China
Lunji Hu, State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong Univ. of Science & Technology (HUST); Wuhan Peoples Republic of China
Presented at ICALEO 2012
Quantitative prediction of the sizes and number...$28.00
ICALEO 2012 Paper #1906 (Modeling Keyhole and Weld Pool Dynamics of Laser Welding Under Variable Ambient Pressure)
Modeling Keyhole and Weld Pool Dynamics of Laser Welding Under Variable Ambient Pressure
Authors:
Shengyong Pang, State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong Univ. of Science & Technology (HUST); Wuhan Peoples Republic of China
Koji Hirano, Nippon Steel Corporation, PIMM Laboratory (Arts et Metiers ParisTech-CNRS); Tokyo Japan
Remy Fabbro, PIMM Laboratory (Arts et Métiers ParisTech-CNRS); Paris France
Tao Jiang, State Key Laboratory of Materials Processing and Die & Mould Technology, Huazhong Univ. of Science & Technology (HUST); Wuhan Peoples Republic of China
Presented at ICALEO 2012
It is widely accepted that evap...$28.00
ICALEO 2012 Paper #1905 (The Numerical Simulation of Heat Transfer During a Hybrid Laser-MIG Welding of Duplex Steel)
The Numerical Simulation of Heat Transfer During a Hybrid Laser-MIG Welding of Duplex Steel
Authors:
Issam Bendaoud, Laboratoire Interdisciplinaire Carnot de Bourgogne; Le Creusot France
Simone Mattei, Laboratoire Interdisciplinaire Carnot de Bourgogne; Le Creusot France
Eugen Cicala, Mechanical Engineering Faculty, Polytechnic Univ. of Timisoara; Timisoara Romania
Iryna Tomashchuk, Laboratoire Interdisciplinaire Carnot de Bourgogne; Le Creusot France
Henri Andrzejewski, Laboratoire Interdisciplinaire Carnot de Bourgogne; Le Creusot France
Pierre Sallamand, Laboratoire Interdisciplinaire Carnot de Bourgogne; Le Creusot France
Alexandre...$28.00
ICALEO 2012 Paper #1904 (Thermohydraulic Aspects in Laser Welding and Cutting Processes)
Thermohydraulic Aspects in Laser Welding and Cutting Processes
Authors:
Toshiharu Muramatsu, Applied Laser Technology Institute, Japan Atomic Energy Agency; Fukui Japan
Presented at ICALEO 2012
A general-purpose three-dimensional thermohydraulics numerical simulation code SPLICE was developed at JAEA and designed to deal with gas-liquid-solid consolidated incompressible viscous flows with a phase change process in various laser applications, such as welding, piercing, drilling, cutting, etc. The code solves mass, momentum and energy conservation equations simultaneously in a finite difference form to evaluate various complex phenomena, such as a laser light-material interaction, liquid metal t...$28.00
ICALEO 2012 Paper #1903 (Modelling of the Cutting Velocity Influence on the Kerf Front During Laser Cutting Process)
Modelling of the Cutting Velocity Influence on the Kerf Front During Laser Cutting Process
Authors:
El-Hachemi Amara, Centre for Development of Advanced Technologies, Ionized Media and Lasers Division Laser Material Processing Team; Algiers Algeria
Remy Fabbro, Laboratoire des Procédés et Ingénierie en Mécanique et Matériaux (Arts et Métiers ParisTech-CNRS),; Paris France
Koji Hirano, Nippon Steel Corporation; Tokyo Japan
Presented at ICALEO 2012
We develop a 2D numerical modeling to simulate the cutting process of metals using a high power laser beam. The matter evaporation is simulated by mass transfer from solid to gas, allowing the kerf formation. Phenomen...$28.00
ICALEO 2012 Paper #1902 (Numerical Simulation of Cut Kerf Formation Under the Influence of CO2 and Fiber Lasers)
Numerical Simulation of Cut Kerf Formation Under the Influence of CO2 and Fiber Lasers
Authors:
Zaitsev Alexander, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
Gurin Alexei, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
Grigoriy Ermolaev, Khristianovich Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
Presented at ICALEO 2012
Fiber laser cutting of metals is significantly different from cutting with CO2 laser. The nature of these differences is unknown. One possible reason is instability of the metal melting front movement under the action of radiation with different wavelengths....$28.00
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