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  • ICALEO 2012 Paper #1808 (Microstructure Evaluation of A356 Aluminium Alloy Laser Surface Alloyed with Ni-Ti-SiC and Ni-Ti-C)

    Microstructure Evaluation of A356 Aluminium Alloy Laser Surface Alloyed with Ni-Ti-SiC and Ni-Ti-C
    Authors:
    Clayton D' Amato, Department of Metallurgy and Materials Engineering, Faculty of Engineering, Univ. of Malta; Msida Malta
    Maurizio Fenech, Department of Metallurgy and Materials Engineering, Faculty of Engineering, Univ. of Malta; Msida Malta
    Joseph Buhagiar, Department of Metallurgy and Materials Engineering, Faculty of Engineering, Univ. of Malta; Msida Malta
    John C. Betts, Department of Metallurgy and Materials Engineering, Faculty of Engineering, Univ. of Malta; Msida Malta
    Presented at ICALEO 2012

    Laser surface alloying of A356 aluminium alloy w...

    $28.00

  • ICALEO 2012 Paper #1807 (Surface Glazing of Concrete Using Lasers for Protection and Decommissioning)

    Surface Glazing of Concrete Using Lasers for Protection and Decommissioning
    Authors:
    Jonathan Lawrence, Wolfson School of Mechanical and Manufacturing Engineering, Loughborough Univ.; Lincoln Great Britain
    Presented at ICALEO 2012

    There is renewed interest in using lasers to surface treat concrete. Drivers for this are coming from the architectural and civil engineering sectors, as well as the nuclear industry. CO2 laser, high power diode laser (HPDL) and fibre laser radiation were used to generate glazes on the ordinary Portland cement (OPC) surface of common concrete and the effects thereof on the chemical, physical and mechanical properties of the glazes are described herein. The optimum las...

    $28.00

  • ICALEO 2012 Paper #1806 (Characterization of Protective Layers Produced by Laser Treatment)

    Characterization of Protective Layers Produced by Laser Treatment
    Authors:
    Václav Ocelík, Materials Innovation Institute (M2i), Department of Applied Physics, Univ. of Groningen; Groningen Netherlands
    Ismail Hemmati, Materials Innovation Institute (M2i), Department of Applied Physics, Univ. of Groningen; Groningen Netherlands
    Jeff Th.M. De Hosson, Materials Innovation Institute (M2i), Department of Applied Physics, Univ. of Groningen; Groningen Netherlands
    Presented at ICALEO 2012

    Metal matrix composite coatings prepared by laser melt injection (LMI) and thick metallic coatings (Iron, Nickel and Cobalt based) prepared by laser cladding were studied with scanning elec...

    $28.00

  • ICALEO 2012 Paper #1805 (Characterization of the Corrosion Performance of Aluminium Laser Alloyed with Stellite-6 and Zirconium Powders)

    Characterization of the Corrosion Performance of Aluminium Laser Alloyed with Stellite-6 and Zirconium Powders
    Authors:
    Given Rambau, Department of Chemical and Metallurgical Engineering, Tshwane Univ. of Technology; Pretoria Southwest Africa
    Patricia Popoola, Department of Chemical and Metallurgical Engineering, Tshwane Univ. of Technology; Pretoria Southwest Africa
    Tebogo Mathebula, Department of Chemical and Metallurgical Engineering, Tshwane Univ. of Technology, Center for Scientific and Industrial Research - National Laser Centre; -
    Sisa Pityana, Department of Chemical and Metallurgical Engineering, Tshwane Univ. of Technology, Center for Scientific and Industrial Re...

    $28.00

  • ICALEO 2012 Paper #1804 (Laser Cleaning of Graffiti from Building Stone Using High Power Diode Laser)

    Laser Cleaning of Graffiti from Building Stone Using High Power Diode Laser
    Authors:
    J. Penide, Dpto. Física Aplicada, Univ. de Vigo; Vigo Spain
    Felix Quintero, Dpto. Física Aplicada, Univ. de Vigo; Vigo Spain
    Antonio Riveiro, Centro Univ. de la Defensa, Escuela Naval Militar; Marin Spain
    Amadeo Sánchez-Castillo, Facultad de Ingeniería Mecánica, Univ. Michoacana de San Nicolás de Hidalgo; Morelia Mexico
    Rafael Comesaña, Dpto. Física Aplicada, Univ. de Vigo; Vigo Spain
    Jesus del Val, Dpto. Física Aplicada, Univ. de Vigo; Vigo Spain
    Fernando Lusquiños, Dpto. Física Aplicada, Univ. de Vigo; Vigo Spain
    Juan Pou, Dpt...

    $28.00

  • ICALEO 2012 Paper #1803 (Analysis of Material Removal on Metallic Materials by Pulsed Fiber Lasers)

    Analysis of Material Removal on Metallic Materials by Pulsed Fiber Lasers
    Authors:
    Mark Brodsky, SPI Lasers LLC; Southampton Great Britain
    Jack Gabzdyl, SPI Lasers UK Limited; -
    Ken Dzurko, SPI Lasers LLC; -
    Presented at ICALEO 2012

    Pulsed fiber lasers are being extensively used for micromachining applications on a very broad range of metallic materials. End user requirements can vary greatly based on whether the parts are functional such as mould tools or just provide deep engraved alphanumeric marking. Material removal rates and residual surface quality are greatly affected by the laser pulse parameters and the optical arrangements used. This study reviews the ef...

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  • ICALEO 2012 Paper #1802 (Single-Pulse Control of Ablation by Monitoring Response of Target Material)

    Single-Pulse Control of Ablation by Monitoring Response of Target Material
    Authors:
    Chen-Hsiung Cheng, Resonetics, LLC; Nashua NH USA
    Sergey Broude, Resonetics, LLC; Nashua NH USA
    Presented at ICALEO 2012

    Material exhibits various responses under laser illumination especially when ablation takes place. Some of the material responses are investigated to probe the progression of laser ablation. Our objective is to use the progression signal as a feedback for ablation process control. Often it is desired to be able to actively stop ablation when the target material is totally removed by the laser. This capability is even more beneficial for selective ablation of multi-layer composite ...

    $28.00

  • ICALEO 2012 Paper #1801 (Advances in Large Scale Laser Paint Stripping)

    Advances in Large Scale Laser Paint Stripping
    Authors:
    Stan Ream, EWI; Columbus OH USA
    Presented at ICALEO 2012

    At the 2010 ICALEO conference EWI introduced a new polygon scanner for laser paint stripping and coating removal. In the intervening two years this technology has advanced considerably. Newer versions of the polygon scanner have been designed and built, and this scanner technology has been used successfully with a variety of laser types to remove a wide range of coatings and paints. These EWI scanners have delivered the highest paint stripping efficiency, paint stripping productivity, and ease of effluent removal ever reported. Now that the fundamental capabilities of this scanner...

    $28.00

  • ICALEO 2012 Paper #1709 (Formation Mechanism of Process Instabilities and Strategies to Improve Welding Quality)

    Formation Mechanism of Process Instabilities and Strategies to Improve Welding Quality
    Authors:
    Volker Rominger, TRUMPF Laser- und Systemtechnik GmbH; Ditzingen Germany
    Thomas Harrer, TRUMPF Laser- und Systemtechnik GmbH; Ditzingen Germany
    Steffen Keler, TRUMPF Werkzeugmaschinen GmbH & Co. KG; -
    Holger Braun, TRUMPF Werkzeugmaschinen GmbH & Co. KG; -
    Friedhelm Dorsch, TRUMPF Werkzeugmaschinen GmbH & Co. KG; -
    Felix Abt, Institute fuer Strahlwerkzeuge (IFSW); -
    Michael Jarwitz, Institute fuer Strahlwerkzeuge (IFSW); -
    Andreas Heider, Institute fuer Strahlwerkzeuge (IFSW); 0
    Rudolf Weber, Institute...

    $28.00

  • ICALEO 2012 Paper #1708 (Influence of Surface Condition in Fiber Laser Welding of Pure Copper)

    Influence of Surface Condition in Fiber Laser Welding of Pure Copper
    Authors:
    Hui-Chi Chen, Singapore Institute of Manufacturing Technology; Singapore Singapore
    Guijun Bi, Singapore Institute of Manufacturing Technology; Singapore Singapore
    Mui Ling Sharon Nai, Singapore Institute of Manufacturing Technology; Singapore Singapore
    Jun Wei, Singapore Institute of Manufacturing Technology; Singapore Singapore
    Presented at ICALEO 2012

    In industry, pure copper is widely used in the applications requiring high electrical conductivity, rapid conduction of heat across or along a metal section as well as good corrosion resistance in fresh and salt water. So far, one...

    $28.00

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