• ICALEO 2010 Paper #503 (Novel High-Speed Space-Resolved X-Ray System for In-Situ Diagnostics of Laser Based Processes)

    Novel High-Speed Space-Resolved X-Ray System for In-Situ Diagnostics of Laser Based Processes
    Authors:
    Felix Abt, Ifsw, Institut Fur Strahlwerkzeuge; Stuttgart Germany
    Rudolf Weber, Ifsw, Institut Fuer Strahlwerkzeuge; Stuttgart Germany
    Thomas Graf, Ifsw, Institut Fuer Strahlwerkzeuge; Stuttgart Germany
    Presented at ICALEO 2010

    The comprehensive diagnostics of melt pool and keyhole dynamics is crucial in the ambitious efforts of understanding the complex behaviour of laser welding and cutting processes. A major drawback for the in-situ diagnostics of laser based processes is the fact that high-speed cameras and other optical sensors are only showing phenomena on the su...

    $28.00

  • ICALEO 2010 Paper #502 (Influencing the Melt Pool Dynamics with Short Pulses)

    Influencing the Melt Pool Dynamics with Short Pulses
    Authors:
    Rudolf Weber, Institut Strahlwerkzeuge IFSW, Universität Stuttgart; Stuttgart Germany
    Roland Gauch, Institut Strahlwerkzeuge IFSW, Universität Stuttgart; Stuttgart Germany
    Thomas Graf, Institut Strahlwerkzeuge IFSW, Universität Stuttgart; Stuttgart Germany
    Presented at ICALEO 2010

    The details of the melt flow dynamics in deep penetration welding as well as in laser cutting are still not completely understood. In addition, control of the melt flow might help to suppress or eliminate defects such as spattering, humping or dross formation.

    The present paper describes the use of a short pulse laser to infl...

    $28.00

  • ICALEO 2010 Paper #501 (Ultra High Speed Camera Investigations of Laser Beam Welding)

    Ultra High Speed Camera Investigations of Laser Beam Welding
    Authors:
    Ingemar Eriksson, Luleå Univ of Techn; Lulea Sweden
    John Powell, Luleå University of Technology; Luleå Sweden
    Alexander Kaplan, Luleå Univ of Techn; Lulea
    Presented at ICALEO 2010

    With the help of high speed camera equipment, researchers can now directly observe melt flow phenomena which only could be imagined or simulated in the past. In this paper the motion of the molten metal inside the keyhole has been observed at frame rates as high as 180000 fps to provide useful information about the laser beam welding process. This paper describes two different cases where high speed imaging has given n...

    $28.00

  • ICALEO 2010 Paper #408 (In-Situ Spectroscopic Analysis of Laser Induced Plasma for Monitoring of Composition during Direct Metal Deposition Process)

    In-Situ Spectroscopic Analysis of Laser Induced Plasma for Monitoring of Composition during Direct Metal Deposition Process
    Authors:
    Lijun Song, Center for Laser Aided Intelligen Manufacturing, University of Michigan; Ann Arbor MI USA
    Jyoti Maz, Center for Laser Aided Intelligen Manufacturing, University of Michigan; Ann Arbor MI USA
    Presented at ICALEO 2010

    Real time chromium and iron elemental analysis during a laser direct deposition process was carried out using optical emission spectroscopy. Mixtures of pure chromium powder and iron powder with different weight ratios were deposited onto a substrate by delivering the powder mixtures co-axially with a high power CO2 laser be...

    $28.00

  • ICALEO 2010 Paper #407 (X-Ray Analysis of Pore Formation in Direct Metal Deposition and Its Causes)

    X-Ray Analysis of Pore Formation in Direct Metal Deposition and Its Causes
    Authors:
    M Naveed Ahsan, Manufacturing and Management Group,The University of Manchester; Manchester Great Britain
    Andrew J Pinkerton, Manufacturing and Management Group, the University of Manchester; Manchester Great Britain
    Robert Bradley, Henry Moseley X-ray Imaging Facility, School of Materials, The University of Manchester; Manchester Great Britain
    Presented at ICALEO 2010

    Laser direct metal deposition has wide applications in the areas of rapid manufacturing, surface coating and
    component repair. Defects of interlayer and intralayer porosity are often observed in laser deposited structure...

    $28.00

  • ICALEO 2010 Paper #405 (Numerical Modeling of Direct Metal Deposition : Heat Transfer / Solute Transport of Ternary System)

    Numerical Modeling of Direct Metal Deposition : Heat Transfer / Solute Transport of Ternary System
    Authors:
    Hyung Min Chae, Center for Laser-Aided Intelligent Manufacturing, University of Michigan; Ann Arbor MI USA
    Jyoti Mazumder, Center for Laser Aided Intelligent Manufacturing University of Michigan; Ann Arbor MI USA
    Presented at ICALEO 2010

    Laser aided Direct Metal Deposition (DMD) process is used for rapid prototyping, tooling and die production, and repairing damaged parts or worn parts by depositing metal powders. Numerical simulation of DMD process helps provide optimal process parameters for better mechanical / thermal properties of products without performing a series of e...

    $28.00

  • ICALEO 2010 Paper #404 (An Iterative, Energy-Mass Balance Model for Laser Metal Deposition)

    An Iterative, Energy-Mass Balance Model for Laser Metal Deposition
    Authors:
    M Naveed Ahsan, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester; Manchester Great Britain
    Wei Wang, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester; Manchester Great Britain
    Andrew J Pinkerton, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester; Manchester Great Britain
    Presented at ICALEO 2010

    Multiple analytical models of the laser metal deposition process have been presented, but most rely on
    sequential solution of the energy and mass balance equations presented. Discretization of the pr...

    $28.00

  • ICALEO 2010 Paper #403 (Comprehensive Predictive Modeling and Parametric Analysis of Multi-Track Direct Laser Deposition Processes)

    Comprehensive Predictive Modeling and Parametric Analysis of Multi-Track Direct Laser Deposition Processes
    Authors:
    Shoayi Wen, Center for Laser-based Manufacturing, School of Mechanical Engineering, Purdue University; W. Lafayette IN USA
    Yung Shin, Center for Laser-based Manufacturing, School of Mechanical Engineering, Purdue University; W. Lafayette IN USA
    Presented at ICALEO 2010

    Laser direct deposition is a very useful method of fabricating building complex parts directly from CAD drawings. Despite its usefulness, many parameters that affect the final quality of the fabricate part make the selection of optimal operating conditions difficult. The supplying powder jet conditi...

    $28.00

  • ICALEO 2010 Paper #402 (Wavelength Optimization for Laser Metal Deposition)

    Wavelength Optimization for Laser Metal Deposition
    Authors:
    Antoni Candel-Ruiz, TRUMPF Laser- und Systemtechnik GmbH; Ditzingen Germany
    David Havrilla, TRUMPF Inc. und Systemtechnik GmbH; Plymouth MI USA
    Jűrgen Metzger, TRUMPF Laser- und Systemtechnik GmbH; Ditzingen Germany
    Presented at ICALEO 2010

    Study on deposition rate and quality as a function of laser wavelength and laser power.
    The study shows application results on the use of different wavelength lasers with different beam quality and laser power. Requirements outlining which laser for which application has been developed.

    $28.00

  • ICALEO 2010 Paper #307 (Laser Drilling of Nickel Alloy: Effect of Process Gases on Drilling Time and Hole Quality)

    Laser Drilling of Nickel Alloy: Effect of Process Gases on Drilling Time and Hole Quality
    Authors:
    M M Okasha, Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester; Manchester Great Britain
    P T Mativenga, Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester; Manchester Great Britain
    L Li, Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester; Manchester Great Britain
    H K Sezer, Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of ...

    $28.00

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