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  • ICALEO 2005 Paper #1001 (Assist Gas Behaviors in the Cutting Groove of Different Thickness)

    Assist Gas Behaviors in the Cutting Groove of Different Thickness
    Authors:
    Takeji Arai, Chuo University of RDI; Tokyo Japan
    Noritaka Asano, Chuo University of RDI; Tokyo Japan
    Presented at ICALEO 2005

    The behavior of assist gas flow in the groove of different material thickness was investigated. Based upon the real shapes of cutting grooves, simulation model was established using the CAD drawings. The cross section in the direction perpendicular to the cut have a throat at both side walls in the groove owing to the effect of focal position. The simulation results shows that these throats can make accepted the assumption of the equation of continuity of gas flow under the boundary ...

    $28.00

  • ICALEO 2005 Paper #1002 (A Phase-Field Model for Microstructure Evolution of Laser Cladding Process)

    A Phase-Field Model for Microstructure Evolution of Laser Cladding Process
    Authors:
    Joohyun Choi, University of Missouri - Rolla; Rolla MO USA
    Y. Cao, University of Missouri-Rolla; Rolla MO USA
    Presented at ICALEO 2005

    Laser cladding is an additive manufacturing process that a laser generates a melt-pool on the substrate material while a second material, as a powder or a wire form, is injected into that melt-pool. Among all laser processes, laser cladding offers the most extensive variety of possibilities to alter a component at its surface. Despite immense potentials and advancements, the process model of microstructure evolution of laser cladding process has not been fully deve...

    $28.00

  • ICALEO 2005 Paper #1003 (Wave-Solid Interactions in Shock Induced Deformation Processes)

    Wave-Solid Interactions in Shock Induced Deformation Processes
    Authors:
    Yajun Fan, Columbia University; New York NY USA
    Youneng Wang, Columbia University; New York NY USA
    Sinisa Vukelic, Columbia Univ.; New York NY USA
    Y. Lawrence Yao, Columbia Univ.; New York NY USA
    Presented at ICALEO 2005

    A model was developed for material deformation processes induced by laser generated shock waves. They include laser shock peening (LSP) and laser peen forming (LPF) of metals. Numerical solutions of the model using finite element method (FEM) were implemented in two steps: (1) explicit step, devoted to shock wave propagation; and (2) implicit step, calculating relaxat...

    $28.00

  • ICALEO 2005 Paper #1005 (Modeling the Microstructure Evolution During Laser Processing of Ti-6Al-4V)

    Modeling the Microstructure Evolution During Laser Processing of Ti-6Al-4V
    Authors:
    Shawn Kelly, Applied Research Laboratory - The Penn State University; State College PA USA
    S. Suresh Babu, Oak Ridge National Laboratory; Oak Ridge TN USA
    Stephen Kampe, Materials Science and Engineering Dept., Virginia Tech; Blacksburg VA USA
    Presented at ICALEO 2005

    Near-net shape processes, such as laser metal deposition (LMD), offer a unique combination of process flexibility, time savings, and reduced cost in producing titanium alloy components. The current challenge in processing titanium alloys (Ti-6Al-4V) using LMD is in understanding the complex microstructure evolution in a p...

    $28.00

  • ICALEO 2005 Paper #1006 (Numerical Modeling of Molten Pool Formation During an Interaction of a Pulse Laser (Nd:YAG) with an Aluminum Sheet)

    Numerical Modeling of Molten Pool Formation During an Interaction of a Pulse Laser (Nd:YAG) with an Aluminum Sheet
    Authors:
    Nicolas Pierron, LTm - IUT Le Creusot; Le Creusot France
    Presented at ICALEO 2005

    In this paper a numerical modeling of molten pool during laser processing is presented. A 2D model is implemented in the finite element software Femlab. This study presents the first results obtained for aluminum sheets. Because of the laser power density and localized laser heating, high temperature gradients are produced. Consequently, a numerical approach in order to establish a model for such phenomena is often complicated but useful. A very fine mesh is realized in the interaction zone...

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  • ICALEO 2005 Paper #101 (Laser Forming of Thin Section Non Ferrous Metals with a Nd:YAG Laser Source)

    Laser Forming of Thin Section Non Ferrous Metals with a Nd:YAG Laser Source
    Authors:
    Jacek Borowski, Metal Forming Institute; Poznan Poland
    Konrad Bartkowiak, The University of Liverpool; Liverpool UK
    Stuart Paul Edwardson, The University of Liverpool; Liverpool UK
    Geoff Dearden, The University of Liverpool; Liverpool UK
    Chris Carey, The University of Liverpool; Liverpool UK
    Kenneth Watkins, The University of Liverpool; Liverpool UK
    Presented at ICALEO 2005

    Laser forming is a relatively novel laser technique which has a practical extension for many industrial applications. The laser forming process has become viable for the shapin...

    $28.00

  • ICALEO 2005 Paper #102 (Effects of Clamping on the Laser Forming Process)

    Effects of Clamping on the Laser Forming Process
    Authors:
    Andrew J. Birnbaum, Columbia University; New York NY USA
    Peng Cheng, Columbia University; New York NY USA
    Y. Lawrence Yao, Columbia University; New York NY USA
    Presented at ICALEO 2005

    Although considerable effort has gone into characterizing the laser forming process in terms of process parameters and conditions, there has been little emphasis on the effects of the mechanical and thermal constraints introduced by the clamping method utilized for a desired application. This research suggests means for investigating and predicting the resulting geometry of a specimen due to laser operation in close proximity to ...

    $28.00

  • ICALEO 2005 Paper #103 (Microstructure Integrated Finite Element Modeling of Laser Forming Particle Reinforced Aluminum Matrix Composite Sheets)

    Microstructure Integrated Finite Element Modeling of Laser Forming Particle Reinforced Aluminum Matrix Composite Sheets
    Authors:
    Liu Furong, Hong Kong Polytechnic University; Hong Kong
    Presented at ICALEO 2005

    Laser forming is a novel process to deform the metal sheet by using the thermal stress caused by the changes of the transient temperature field without the assistance of the external tools, therefore, it is popularly used in many fields of the industries. From its birth, considerable amount of experiments and analytical or numerical models were carried out to investigate the deformation behavior of the metal sheet. However, most of the investigations were focused on the monolithic alloy...

    $28.00

  • ICALEO 2005 Paper #104 (Thermal Forming Process Design)

    Thermal Forming Process Design
    Authors:
    David Mika, General Electric; Niskayuna NY USA
    Presented at ICALEO 2005

    Thermal forming metallic components with laser energy is evolving into a viable manufacturing technology with commercial applications spanning diverse domains such as high-volume automotive part production, microelectronic device fabrication and shape tuning turbomachinery airfoils. Research activities are concentrated on quantifying the underlying mechanisms and resulting strain fields and in devising thermal forming strategies and schedules to yield a desired part shape. In this paper we outline a generalized empiric-numeric approach to determine thermal forming induced strain fie...

    $28.00

  • ICALEO 2005 Paper #105 (Spinning of Thin Metal Plate with Diode Laser)

    Spinning of Thin Metal Plate with Diode Laser
    Authors:
    Tadashi Misu, Chiba Institute of Technology; Narashino Chiba Japan
    Masanobu Nagahama, Chiba Institute of Technology; Narashno Chiba Japan
    Syunrou Yoshioka, Chiba Institute of Technology; Narashino Chiba Japan
    Toshiyuki Miyazaki, Chiba Institute of Technology; Narashino Chiba Japan
    Tsuyoshi Tokunaga, Polytechnic Univ.; Sagamihara Kanagawa Japan
    Yoshihiro Tanaka, Tokyo Institute Polytechnic Univ.; Kodaira Tokyo Japan
    Presented at ICALEO 2005

    Spinning of AISI 304, magnesium alloy and titanium alloy plates is tried with diode laser. The sizes of the plates are 0.3, 0.4 and 0.5 mm ...

    $28.00

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