• ICALEO 2005 Paper #1306 (Measuring Laser Absorption and Powder Capture Efficiency During Deposition)

    Measuring Laser Absorption and Powder Capture Efficiency During Deposition
    Authors:
    Aaron Costello, South Dakota School of Mines & Technology; Rapid City South Dakota USA
    Kate Nelson, South Dakota School of Mines & Technology; Rapid City South Dakota USA
    Tricia Krungjohn, South Dakota School of Mines & Technology; Rapid City South Dakota USA
    James Sears, South Dakota School of Mines & Technology; Rapid City SD USA
    Michael Langerman, South Dakota School of Mines & Technology; Rapid City South Dakota USA
    Umesh Korde, South Dakota School of Mines & Technology; Rapid City South Dakota USA
    Presented at ICALEO 2005

    There have been consi...

    $28.00

  • ICALEO 2005 Paper #1402 (The Effect of Process Parameters on Residual Stresses Within an Inconel 718 Part Produced by the Direct Laser Deposition Process)

    The Effect of Process Parameters on Residual Stresses Within an Inconel 718 Part Produced by the Direct Laser Deposition Process
    Authors:
    Andrew Pinkerton, University of Manchester; Manchester UK
    Judith Shackleton, University of Manchester; Manchester Great Britain
    Richard Moat, University of Manchester; Manchester Great Britain
    Lin Li, University of Manchester; Manchester Greater Manches Great Britain
    Philip Withers, University of Manchester; Manchester Greater Manches Great Britain
    Michael Preuss, The University of Manchester; Manchester Great Britain
    Jeffrey Allen, Rolls-Royce plc; Derby Derbyshire Great Britain
    Paul Hi...

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  • ICALEO 2005 Paper #1403 (High Efficiency Laser Cladding at Elevated Processing Speed)

    High Efficiency Laser Cladding at Elevated Processing Speed
    Authors:
    Knut Partes, BIAS Bremer Institut fr angewandte Strahltechnik; Bremen Germany
    Thomas Seefeld, BIAS; Bremen Germany
    Frank Vollertsen, BIAS Bremer Institut fr angewandte Strahltechnik; Bremen Germany
    Gerd Sepold, BIAS Bremer Institut fr angewandte Strahltechnik; Bremen Germany
    Presented at ICALEO 2005

    Laser cladding is a versatile tool to deposit functional layers on surfaces of work pieces. With a laser beam the energy can be brought localized to the interaction zone compared to other cladding methods. It is possible to keep the heat introduced into the work piece low. On the other side...

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  • ICALEO 2005 Paper #1403 (Laser Clad WC Reinforced Ni-Based Intermetallic-Matrix Composites to Improve Cavitation Erosion Resistance)

    Laser Clad WC Reinforced Ni-Based Intermetallic-Matrix Composites to Improve Cavitation Erosion Resistance
    Authors:
    Muthukannan Duraiselvam, Institut fr Schweiechnik und Trennende Fertigungsverfahren; Clausthal-Zellerfeld Niedersachen Germany
    Rolf Galun, Institut fr Werkstoffkunde und Werkstofftechnik; Clausthal-Zellerfeld Niedersachen Germany
    Volker Wesling, Institut fr Schweiechnik und Trennende Fertigungsverfahren; Clausthal-Zellerfeld Niedersachen Germany
    Barry Mordike, Institu fr Werkstoffkunde und Werkstofftechnik; Clausthal-Zellerfeld Niedersachen Germany
    Presented at ICALEO 2005

    Cavitation erosion is a superficial damage encountered in flui...

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  • ICALEO 2005 Paper #1405 (On the Wear Properties of Laser Coatings with High Carbide Concentrations)

    On the Wear Properties of Laser Coatings with High Carbide Concentrations
    Authors:
    Petri Vuoristo, Tampere University of Technology; Tampere Finland
    Janne Nurminen, Ketek; Kokkola Finland
    Jonne Ni, KETEK; Kokkola Finland
    Presented at ICALEO 2005

    Laser coating (laser cladding) is a novel way to produce metal matrix composite (MMC) coatings. The selection of the metallic matrix can be selected on the base of the intended application and environment, whereas the additional wear resistance improvement is provided by mixing various carbides with the metallic matrix. In the present work, various types of MMC coatings were prepared by laser coating methods. The coatings co...

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  • ICALEO 2005 Paper #1501 (CO2 Laser Beam Caustic Measurement with Focal Spot Analyser)

    CO2 Laser Beam Caustic Measurement with Focal Spot Analyser
    Authors:
    Flemming Olsen, Technical University of Denmark; Lyngby Denmark
    Hui Gong, Technical Univ. of Denmark; Lyngby Denmark
    Claus Bagger, Novo Nordisk A/S; Copenhagen Denmark
    Presented at ICALEO 2005

    In industrial applications of high power CO2-lasers the caustic characteristics of the laser beam have great effects on the performance of the lasers. A well-defined high intense focused spot is essential for reliable production results. This paper presents a focal spot analyser that is developed for measuring the beam profiles of focused high power CO2-lasers. Conduction of the test methods and calculation of t...

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  • ICALEO 2005 Paper #1502 (Non-Contact Measurement of Central Lens Thickness)

    Non-Contact Measurement of Central Lens Thickness
    Authors:
    Markus Kogel-Hollacher, Precitec Optronik GmbH; Rodgau Germany
    Presented at ICALEO 2005

    The production of high-quality optical lenses from glass or polymer materials is subject to tight specification tolerances. Critical lens parameters such as central thickness have to be monitored frequently, during the production process. A non-contact, fast and precise optical measuring setup based upon a confocal chromatic probe can be used to measure central lens thickness ranging from 30 microns up to 25 mm. The only parameters that have to be known up front, are the radius of curvature of one lens surface, and the material used. We will present ...

    $28.00

  • ICALEO 2005 Paper #1503 (Optical Characteristics of Nd:YAG Optics and Distortions at High Power)

    Optical Characteristics of Nd:YAG Optics and Distortions at High Power
    Authors:
    Dirk De Lange, Netherlands Institute for Metals Research; Enschede The Netherlands
    Johan Meijer, University of Twente; Enschede The Netherlands
    Johannes Hofman, Netherlands Institute for Metals Research; Enschede The Netherlands
    Presented at ICALEO 2005

    The intensity profile and beam caustics of a fiber coupled high power Nd:YAG beam through a lens system is discussed. The thermal lensing effect and its influence on the beam profile and focal position is discussed. Also the influence of small pollutions on the protective window are demonstrated. Asymmetry of the intensity profile in planes ...

    $28.00

  • ICALEO 2005 Paper #1504 (Novel Focusing Optics for IR Lasers)

    Novel Focusing Optics for IR Lasers
    Authors:
    Gary Herrit, II-VI Incorporated; Saxonburg PA USA
    Alan Hedges, II-VI Incorporated; Saxonburg PA USA
    Herman Reedy, II-VI Incorporated; Saxonburg PA USA
    Presented at ICALEO 2005

    Traditional focusing optics for IR lasers are refractive lenses and off-axis reflective mirrors. ZnSe and GaAs meniscus and plano-convex lenses dominate the refractive lens types in use today for CO2 laser cutting, welding, marking, engraving systems to name a few of the more common applications. Spherical mirrors used near normal incidence and off-axis parabolic mirrors dominate the type of reflective mirrors used in very high power CO2 lasers for wel...

    $28.00

  • ICALEO 2005 Paper #1601 (Crystalline Controlled Cladding of Ni-base Single Crystal Superalloy by Diode Laser)

    Crystalline Controlled Cladding of Ni-base Single Crystal Superalloy by Diode Laser
    Authors:
    Kazuyoshi Saida, Osaka University; Osaka Japan
    Yoshihiro Fujita, Osaka University; Osaka Japan
    Kazutoshi Nishimoto, Osaka University; Osaka Japan
    Presented at ICALEO 2005

    Microstructure and crystallographic orientation in the surface-melted region and clad region by diode laser have been investigated using Ni-base single crystal superalloy CMSX-4. The laser power and scanning speed in laser surface melting and cladding were varied while defocusing distance was constant. The microstructure and crystal orientation of the melted and clad regions were analyzed using SEM observation...

    $28.00

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