• ICALEO 2013 Paper #405 (Complete Heat and Fluid Flow Modeling of Keyhole Formation and Collapse During Spot Laser Welding)

    Complete Heat and Fluid Flow Modeling of Keyhole Formation and Collapse During Spot Laser Welding
    Authors:
    Mickael Courtois, Limatb - Ea 4250; Lorient France
    Muriel Carin, Limatb - Ea 4250; Lorient France
    Philippe Le Masson, Limatb - Ea 4250; Lorient France
    Sadok Gaied, Arcelormittal; Montataire
    Mikhael Balabane, Institute Galilee Universite; Villentaneuse France
    Presented at ICALEO 2013

    During laser welding of metals, an important issue is the understanding of phenomena responsible for defects in the solidified welded joint. With the increasing of computation capabilities, models developed in recent years become more physic and need less an...

    $28.00

  • ICALEO 2013 Paper #406 (Simulation of Process Dynamics in Laser Beam Brazing)

    Simulation of Process Dynamics in Laser Beam Brazing
    Authors:
    Michael Dobler, Institute of Photonic Technologies and Erlangen Graduate School in Advanced Optical Technologies (Saot), University of Erlangen-Nuremberg; Erlangen Germany
    Karl-Heinz Leitz, Institute of Photonic Technologies and Erlangen Graduate School in Advanced Optical Technologies (Saot), University of Erlangen-Nuremberg; Erlangen Germany
    Andreas Otto, Institute for Production Engineering and Laser Technology, Vienna University of Technology; Vienna Austria
    Michael Schmidt, Institute of Photonic Technologies and Erlangen Graduate School in Advanced Optical Technologies (Saot), University of Erlangen-Nurember...

    $28.00

  • ICALEO 2013 Paper #407 (A Finite Volume Alternate Direction Implicit Approach to Modelling Selective Laser Melting)

    A Finite Volume Alternate Direction Implicit Approach to Modelling Selective Laser Melting
    Authors:
    Sankhya Mohanty, Technical University of Denmark; Kongens Lyngby Denmark
    Jesper Hattel, Technical University of Denmark; Kongens Lyngby Denmark
    Presented at ICALEO 2013

    Over the last decade, several studies have attempted to develop thermal models for analyzing the selective laser melting process with a vision to predict thermal stresses, microstructures and resulting mechanical properties of manufactured products. While a holistic model addressing all involved phenomena is yet to emerge, the existing partial models have already become computationally heavy. This is observed to go ha...

    $28.00

  • ICALEO 2013 Paper #408 (2D Modeling of Surface Tension Effect During Laser Metal Cutting)

    2D Modeling of Surface Tension Effect During Laser Metal Cutting
    Authors:
    El-Hachemi Amara, Centre for Development of Advanced Technologies; Algiers Algeria
    Karim Kheloufi, Centre for Development of Avanced Technologies; Algiers Algeria
    Toufik Tamsaout, Centre for Development of Advanced Technologies; Algiers Algeria
    Presented at ICALEO 2013

    The physical mechanisms occurring during laser metal cutting are widely studied with the aim to optimize the cutting process by acting on the operating parameters, in order to remove or reduce cutting defects such as striations and dross.
    During cutting, the laser beam heats up and melts the workpiece, while an intense gas jet ...

    $28.00

  • ICALEO 2013 Paper #409 (Numerical Analysis of the Influence of Beam Characteristics Onto The Process Dynamics During Laser Cutting)

    Numerical Analysis of the Influence of Beam Characteristics Onto The Process Dynamics During Laser Cutting
    Authors:
    Stefanie Kohl, Institute of Photonic Technologies, University of Erlangen-Nuremberg; Erlangen Germany
    Michael Schmidt, Institute of Photonic Technologies, University of Erlangen-Nuremberg; Erlangen Germany
    Presented at ICALEO 2013

    Laser cutting currently represents the most common laser-based process in production technology. With the ongoing development of remote laser cutting technologies, such as remote fusion cutting and remote ablation cutting, its field of application will widen even more.
    Exploring these processes, simulations offer major advantages compared t...

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  • ICALEO 2013 Paper #501 (Parameter Tolerance Evaluation When Laser Cutting in Decommissioning Applications.)

    Parameter Tolerance Evaluation When Laser Cutting in Decommissioning Applications.
    Authors:
    Paul Hilton, TWI Ltd.; Great Abington, Cambridge Great Britain
    Presented at ICALEO 2013

    In conventional laser cutting it is well known that in order to maintain high quality edges, low heat affected zones and high cutting speeds, high tolerances have to be maintained on many of the parameters used. In particular, nozzle stand-off distances have to be small and kept constant, if good cut quality is to be maintained in plate and tube cutting. Recently, a potential application of laser cutting has arisen in a sector where the resulting cut quality is not important; that of decommissioning. In nuclear enviro...

    $28.00

  • ICALEO 2013 Paper #502 (A Comparative Experimental Study of Laser Fusion Cutting of Steel with 1 Micron and 10 Microns Laser Wavelengths)

    A Comparative Experimental Study of Laser Fusion Cutting of Steel with 1 Micron and 10 Microns Laser Wavelengths
    Authors:
    Koji Hirano, Nippon Steel & Sumitomo Metal Corporation; Futtsu, Chiba Japan
    Remy Fabbro, Pimm Laboratory, Arts Et Metiers Paristech - Cnrs; Paris France
    Presented at ICALEO 2013

    This study aims to contribute to a better understanding of the cut surface quality difference between a laser with 1 micron wavelength (fiber or disc laser) and a 10.6 microns CO2 laser for laser fusion cutting of thick steel plates. Laser cutting of SUS304 stainless steel with thicknesses of 3, 5 and 8 mm was performed with a multimode fiber laser and a CO2 laser with the same power and...

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  • ICALEO 2013 Paper #503 (Energy Conditions of a High-Quality Cut at the Laser-Oxygen Cutting with Fiber and Co2 Lasers)

    Energy Conditions of a High-Quality Cut at the Laser-Oxygen Cutting with Fiber and Co2 Lasers
    Authors:
    Victor Shulyatyev, Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
    Alexander Golyshev, Institute of Theoretical and Applied Mechanics; Novosibirsk
    Alexander Malikov, Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
    Anatoly Orishich, Institute of Theoretical and Applied Mechanics, Russian Academy of Sciences, Sib; Novosibirsk Russia
    Presented at ICALEO 2013

    The fiber laser is a promising beam source for metal cutting. The modern level of research and practical application, however, enables to conclude that the fiber l...

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  • ICALEO 2013 Paper #504 (Analysing the Temperature Distribution at the Cutting Front and Inside the Cutting Kerf During Co2-Laser Cutting of Aluminium)

    Analysing the Temperature Distribution at the Cutting Front and Inside the Cutting Kerf During Co2-Laser Cutting of Aluminium
    Authors:
    Michael Jarwitz, IFSW, University of Stuttgart; Stuttgart Germany
    Rudolf Weber, Ifsw, University of Stuttgart; Stuttgart Germany
    Thomas Graf, Ifsw, University of Stuttgart; Stuttgart Germany
    Presented at ICALEO 2013

    In laser cutting the cut quality strongly depends on the removal of the molten material from the cutting kerf. The physical properties of the molten layer, which are temperature dependent, and the gas flow of the assist gas inside the cutting kerf are the main factors influencing the melt removal. Therefore the temperature d...

    $28.00

  • ICALEO 2013 Paper #505 (The Novel Technology for Thick Glass Cutting with Small Power Laser Saw)

    The Novel Technology for Thick Glass Cutting with Small Power Laser Saw
    Authors:
    Chao Huang, Institute of Laser Engineering; Beijing Peoples Republic of China
    Shi Bai, Beijing University of Technology; Chaoyang, Beijing Peoples Republic of China
    Jimin Chen, Beijing University of Technology; Chaoyang, Beijing Peoples Republic of China
    Presented at ICALEO 2013

    Usually when cutting thicker material we need higher power laser during laser cutting. If we use a saw to cut the situation will be different. In this paper we report a novel technology for thick glass cutting with a small power laser saw. The laser saw is made of 532nm green laser with long pulse width 1ms. It is ...

    $28.00

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