Exciting News—A New LIA Website Is Coming Soon!

Get ready for a fresh design, enhanced usability, and improved accessibility. Click here for a sneak peek!

  • ICALEO 2007 Paper #1806 (A Verified Model of Laser Direct Metal Deposition using an Analytical Enthalpy Balance Method)

    A Verified Model of Laser Direct Metal Deposition using an Analytical Enthalpy Balance Method
    Authors:
    Andrew Pinkerton, The University of Manchester; Manchester Great Britain
    Kamran Shah, The University of Manchester; Manchester Great Britain
    Richard Moat, The University of Manchester; Manchester Great Britain
    Lin Li, The University of Manchester; Manchester Great Britain
    Michael Preuss, The University of Manchester; Manchester Great Britain
    Philip Withers, The University of Manchester; Manchester Great Britain
    Presented at ICALEO 2007

    Analytical modelling of a quasi-stationary laser melt pool without mass addition can be achieve...

    $28.00

  • ICALEO 2007 Paper #1805 (Modeling and Simulation of the Energy Deposition in Laser Beam Welding with Oscillatory Beam Deflection)

    Modeling and Simulation of the Energy Deposition in Laser Beam Welding with Oscillatory Beam Deflection
    Authors:
    Achim Mahrle, TU Dresden / IOF - LOT; Dresden Germany
    Eckhard Beyer, IWS Dresden / TU Dresden; Dresden Germany
    Presented at ICALEO 2007

    In recent years, some promising results about laser beam welding with forced beam oscillation were published. Characteristic feature of this technology is the purposeful beam manipulation by an oscillatory beam deflection in superposition to the commonly uniform and rectilinear feed rate of a conventional laser beam welding process. Due to the increased number of welding variables, the application of oscillation techniques offers manifol...

    $28.00

  • ICALEO 2007 Paper #1804 (Nd:Yag Laser Absorptance of Rough Metal Surfaces)

    Nd:Yag Laser Absorptance of Rough Metal Surfaces
    Authors:
    David Bergstrom, Mid Sweden University; Ostersund Sweden
    John Powell, Laser Expertise Ltd.; Nottingham Great Britain
    Alexander F. H. Kaplan, Lulea University of Technology; Lulea Sweden
    Presented at ICALEO 2007

    The Nd:YLF/Nd:YAG laser absorptance of rough metal surfaces has been investigated using 3D ray tracing simulations on computer-generated Gaussian random rough metal surfaces. The impact of multiple scattering, shadowing and Fresnel-equation based angle dependence on the overall absorption is discussed.

    $28.00

  • ICALEO 2007 Paper #1803 (Laser Absorption within a Powder Layer and the Numerical Modeling of Heat Transfer during the Laser Cladding Process)

    Laser Absorption within a Powder Layer and the Numerical Modeling of Heat Transfer during the Laser Cladding Process
    Authors:
    Ryan McVey, Engineering Science and Mechanics Department, The Penn State University; State College PA USA
    Richard Martukanitz, ARL, The Penn State University; State College PA USA
    Shawn Kelly, ARL, The Penn State University; State College PA USA
    Presented at ICALEO 2007

    In previous experimentation, it has been shown that laser energy incident onto a powder layer is absorbed within the layer; however, when modeling a powder based laser deposition process, it is common practice to assume surface loading only. The current work explores incorporati...

    $28.00

  • ICALEO 2007 Paper #1801 (Simulation Based Design of Hybrid Laser Welding Processes)

    Simulation Based Design of Hybrid Laser Welding Processes
    Authors:
    Dave Farson, Ohio State University; Columbus OH USA
    MinHyun Cho, OSU; Columbus OH USA
    YongChae Lim, OSU; Columbus OH USA
    Presented at ICALEO 2007

    In this presentation, development of innovative configurations of the hybrid laser + GMA welding process for fatigue-critical welds, high-speed welding and narrow gap welding are described. Fatigue strength, which is often of concern in fabricated steel structures, is strongly related to the final weld shape in the weld toe region. For fatigue critical welding, the hybrid laser beam focus spot was larger than normal (to prevent keyhole formation) and was loca...

    $28.00

  • ICALEO 2007 Paper #1708 (A Study of Optimal Laser Parameters by ANOVA Method in Laser Surface Alloyed NiTi with Mo)

    A Study of Optimal Laser Parameters by ANOVA Method in Laser Surface Alloyed NiTi with Mo
    Authors:
    H.C. Man, The Hong Kong Polytechnic University; Kowloon Hong Kong
    Ng Ka Wai, The Hong Kong Polytechnic University; Shatin Hong Kong
    T.M. Yue, The Hong Kong Polytechnic University; Kowloon Hong Kong
    Presented at ICALEO 2007

    The present work investigates the influence of process parameters for laser surface alloying with molybdenum on Nickel Titanium, which is extensively used in medical devices industries. A systematic study of process parameters such as laser power, scanning velocity and pre-paste thickness upon the Mo concentration was carried out. Analysis of variance (...

    $28.00

  • ICALEO 2007 Paper #1707 (Deposition Efficiencies of Laser Cladding with Various Sources)

    Deposition Efficiencies of Laser Cladding with Various Sources
    Authors:
    J.F. Tressler, ARL, The Penn State University; University Park PA USA
    Richard Martukanitz, ARL, The Penn State University; State College PA USA
    J.H. McDermott, ARL, The Penn State University; University Park PA USA
    Presented at ICALEO 2007

    This presentation will encompass the results of evaluations on laser cladding experiments measuring deposition rates and energy efficiency for various laser systems. With The ability to efficiency deposit material, regardless of the process, is of extreme importance for many cladding applications. To quantify the efficiency of laser cladding, CO2, Nd:YAG (flas...

    $28.00

  • ICALEO 2007 Paper #1706 (Laser Cladding of Al-Si/Sic Composite Coatings: Microstructure and Abrasive Wear Behavior)

    Laser Cladding of Al-Si/Sic Composite Coatings: Microstructure and Abrasive Wear Behavior
    Authors:
    Ramasamy Anandkumar, Instituto Superior Tecnico; Lisboa Portugal
    Amelia Almeida, Instituto Superior Tecnico; Lisbon Portugal
    Rui Vilar, Instituto Superior Tecnico; Lisboa Portugal
    Vaclav Ocelik, University of Groningen; Groningen Netherlands
    Jeff De Hosson, University of Groningen; Groningen Netherlands
    Presented at ICALEO 2007

    Coatings of a composite material consisting of an Al-Si matrix reinforced with SiC particles were produced by laser cladding on cast UNS 356 alloy substrates. The influence of processing parameters on the microstructure an...

    $28.00

  • ICALEO 2007 Paper #1705 (In-situ Synthesis of Titanium Carbide Particles in Iron Matrix using Laser Cladding)

    In-situ Synthesis of Titanium Carbide Particles in Iron Matrix using Laser Cladding
    Authors:
    Christ Prakash Paul, University of Waterloo; Waterloo, ON ON Canada
    Amir Khajepour, University of Waterloo; Waterloo ON Canada
    Mehrdad Iravani, University of Waterloo; Waterloo ON Canada
    Stephen Corbin, University of Waterloo; Waterloo ON Canada
    Presented at ICALEO 2007

    Conventionally, the majority of reinforced phases are directly added into coating materials to form reinforcement in the matrix. The interface between the particles and matrix is often a potential source of weakness owing to different thermal expansion coefficients between them. When the surface of ...

    $28.00

  • ICALEO 2007 Paper #1704 (The Influence of Various Surface Conditions during Laser Transformation Hardening)

    The Influence of Various Surface Conditions during Laser Transformation Hardening
    Authors:
    Tshidiso Seleka, CSIR National Laser Centre; Pretoria Southwest Africa
    Sisa Pityana, CSIR; Pretoria Republic of South Africa
    Ken Labuschagne, CSIR; Pretoria Republic of South Africa
    Tanya Fedotova, Tshwane University of Technology; Pretoria Republic of South Africa
    Presented at ICALEO 2007

    This study focuses on the influence of different material surface conditions on the absorption characteristics of the laser beam. Flat rolled 5 mm thick locally manufactured Iscor Bennox® wear plate with a similar chemical composition to AISI 1055 was used as base material. This m...

    $28.00

Pages

There is currently no content classified with this term.