• ICALEO 2012 Paper #1807 (Surface Glazing of Concrete Using Lasers for Protection and Decommissioning)

    Surface Glazing of Concrete Using Lasers for Protection and Decommissioning
    Authors:
    Jonathan Lawrence, Wolfson School of Mechanical and Manufacturing Engineering, Loughborough Univ.; Lincoln Great Britain
    Presented at ICALEO 2012

    There is renewed interest in using lasers to surface treat concrete. Drivers for this are coming from the architectural and civil engineering sectors, as well as the nuclear industry. CO2 laser, high power diode laser (HPDL) and fibre laser radiation were used to generate glazes on the ordinary Portland cement (OPC) surface of common concrete and the effects thereof on the chemical, physical and mechanical properties of the glazes are described herein. The optimum las...

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  • ICALEO 2012 Paper #1808 (Microstructure Evaluation of A356 Aluminium Alloy Laser Surface Alloyed with Ni-Ti-SiC and Ni-Ti-C)

    Microstructure Evaluation of A356 Aluminium Alloy Laser Surface Alloyed with Ni-Ti-SiC and Ni-Ti-C
    Authors:
    Clayton D' Amato, Department of Metallurgy and Materials Engineering, Faculty of Engineering, Univ. of Malta; Msida Malta
    Maurizio Fenech, Department of Metallurgy and Materials Engineering, Faculty of Engineering, Univ. of Malta; Msida Malta
    Joseph Buhagiar, Department of Metallurgy and Materials Engineering, Faculty of Engineering, Univ. of Malta; Msida Malta
    John C. Betts, Department of Metallurgy and Materials Engineering, Faculty of Engineering, Univ. of Malta; Msida Malta
    Presented at ICALEO 2012

    Laser surface alloying of A356 aluminium alloy w...

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  • ICALEO 2012 Paper #1809 (On the Interaction of the Particles of Tantalum with a Substrate of Copper in the Cold Spray Bonding Process)

    On the Interaction of the Particles of Tantalum with a Substrate of Copper in the Cold Spray Bonding Process
    Authors:
    Anass Nifa, PIMM, UMR 8006 CNRS Arts et Métiers; paris France
    Laurent Berthe, PIMM, UMR 8006 CNRS Arts et Métiers; Paris France
    Michel Boustie, PPRIME UPR 3346 ENSMA; Poitiers France
    Laure-Line Descurninges, Centre des Matériaux; Evry France
    Michel Jeandin, Centre des Matériaux; -
    Jacky Bénier, CEA, DAM DIF; -
    Patrick Mercier, CEA, DAM DIF; -
    Presented at ICALEO 2012

    Cold gas spraying is a relatively new deposition process in which coatings can be produced without significant he...

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  • ICALEO 2012 Paper #1901 (Three-Phase 3D Modelling of a Laser Cutting Process Using Smoothed Particle Hydrodynamics (SPH))

    Three-Phase 3D Modelling of a Laser Cutting Process Using Smoothed Particle Hydrodynamics (SPH)
    Authors:
    Noorhafiza Muhammad, Laser Processing Research Centre (LPRC), Smoothed Particle Hydrodynamics Expert Group, Modelling and Simulation Centre (MASC), School of Mechanical, Aerospace and Civil Engineering,The Univ. of Manchester; Manchester Great Britain
    Benedict Rogers, Smoothed Particle Hydrodynamics Expert Group, Modelling and Simulation Centre (MASC), School of Mechanical, Aerospace and Civil Engineering,The Univ. of Manchester; Manchester Great Britain
    Lin Li, Laser Processing Research Centre (LPRC), School of Mechanical, Aerospace and Civil Engineering, The Univ. of Manchester; Ma...

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  • 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....

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  • 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...

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  • 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...

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  • 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...

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  • 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...

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  • 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...

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