• ICALEO 2010 Paper #306 (Drilling of Aluminum with High Power Q-Switched Lasers)

    Drilling of Aluminum with High Power Q-Switched Lasers
    Authors:
    Leonard Migliore, Coherent, Inc.; Santa Clara CA USA
    George Nazary, Coherent, Inc.; Santa Clara CA USA
    Presented at ICALEO 2010

    Advances in the design of gain modules for diode-pumped solid-state lasers have allowed the manufacture of extremely compact high power products with an output wavelength of 1064nm. Their high Q-switched pulse energy combined with good mode quality also enable highly efficient harmonic conversion, resulting in a product producing several hundred watts of average power at a wavelength of 532nm.

    Among the applications for which these products may be suited is the rapid drilling of high-qualit...

    $28.00

  • ICALEO 2010 Paper #305 (Laser Percussion Drilling of Coated and Uncoated Aerospace Materials with a High Beam Quality and High Peak Power Lamp Pumped Pulsed Nd:Yag Laser)

    Laser Percussion Drilling of Coated and Uncoated Aerospace Materials with a High Beam Quality and High Peak Power Lamp Pumped Pulsed Nd:Yag Laser
    Authors:
    Mohammed Naeem, GSI Group, Inc. - Laser Division; Rugby Great Britain
    Presented at ICALEO 2010

    Aerospace gas turbines require a large number of small diameter holes (

    $28.00

  • ICALEO 2010 Paper #304 (Continous Wave Fiber Laser Keyhole Drilling for the Production of Zero Tapered, Low Recast Holes in Ni-Alloys)

    Continous Wave Fiber Laser Keyhole Drilling for the Production of Zero Tapered, Low Recast Holes in Ni-Alloys
    Authors:
    H K Sezer, Laser Processing Research Centre School of Mechanical. Aerospace and Civil Engineering. The University of Manchester; - USA
    L Li, Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester; Manchester
    S Leigh, Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester; Manchester
    Z Liu, Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester; Manchester
    Pres...

    $28.00

  • ICALEO 2010 Paper #303 (Reliable Laser Micro-Welding of Copper)

    Reliable Laser Micro-Welding of Copper
    Authors:
    Christoph Ruettimann, LASAG AG, C.F.L.; Thun Switzerland
    Ulrich Duerr, LASAG AG, C.F.L.; Thun
    Anas Moalem, Laserzentrum Hannover e.V; - Germany
    Presented at ICALEO 2010

    The reliability of copper (spot) welds is still a problem today concerning the high demands of e.g. spot or contact welding for the electronic or medical industry. Two aspects characterising this reliability are tackled: the reproducibility of the weld geometry and the reduction of thermally induced side effects, like sputtering.
    One problem in copper welding is the low absorption on a clean polished surface which is about 5% at room temperature at the 1...

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  • ICALEO 2010 Paper #302 (Laser Drilling in Ablation Regime : Study of Drilling Velocity with Decoupled Q-Switch Laser)

    Laser Drilling in Ablation Regime : Study of Drilling Velocity with Decoupled Q-Switch Laser
    Authors:
    Laurent Berthe, Laboratoire Procédés et Inginièrie en matériaux et Mécanique, UPR CNRS 8006; Paris Cedex France
    Matthieu Schneider, Laboratoire PIMM Procédé et Ingénierie en Mécanique et Matériaux CNRS/ Arts et Métiers Paristech UPR 8006; Paris France
    Maryse Muller, Laboratoire PIMM Procédé et Ingénierie en Mécanique et Matériaux CNRS/ Arts et Métiers Paristech UPR 8006; Paris Cedex France
    Florian Carro, Laboratoire PIMM Procédé et Ingénierie en Mécanique et Matériaux CNRS/ Arts et Métiers Paristech UPR 8006; Paris Cedex France
    Presented at I...

    $28.00

  • ICALEO 2010 Paper #301 (Numerical Investigation of the Effect of the Pulse Format on Drilling Performance)

    Numerical Investigation of the Effect of the Pulse Format on Drilling Performance
    Authors:
    Joonghan Shin, Center for Lasers and Plasmas for Advanced Manufacturing University of Michigan; Ann Arbor MI USA
    Jyoti Mazumder, Center for Lasers and Plasmas for Advanced Manufacturing University of Michigan; Ann Arbor MI
    Presented at ICALEO 2010

    Numerical simulation for pulsed laser drilling is carried out to develop the fundamental understanding of the high power density laser process. The model used in this study adopted mathematical scheme called the level-set technique to capture the transient liquid-vapour interface during the laser-material interaction. The model has the capabilitie...

    $28.00

  • ICALEO 2010 Paper #205 (Process Monitoring and Control during Hybrid Laser-Arc Welding of Medium Section Steel Sheets)

    Process Monitoring and Control during Hybrid Laser-Arc Welding of Medium Section Steel Sheets
    Authors:
    Wolfgang Fiedler, Fraunhofer Institute for Laser Technology ILT; Aachen Germany
    Alexander Drenker, Fraunhofer Institute for Laser Technology ILT; Aachen Germany
    Stefan Kaierle, Fraunhofer Institute for Laser Technology ILT; Aachen Germany
    Presented at ICALEO 2010

    In current manufacturing, conventional arc welding processes, such as MIG/MAG and submerged arc welding, are mainly used to produce joints of metal sheets over a wide range of materials and wall thicknesses. Yet the manufacturers are facing problems like a low productivity and reliance on the skill of operat...

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  • ICALEO 2010 Paper #203 (HyDRA and LUPus - the Exotics Among the Hybrid Welding Method)

    HyDRA and LUPus – the Exotics Among the Hybrid Welding Method
    Authors:
    Uwe Reisgen, Rwth Aachen University - Welding and Joining Institute (Isf); Aachen Germany
    Simon Olschok, Rwth Aachen University - Welding and Joining Institute (Isf); Aachen Germany
    Stefan Jakobs, Rwth Aachen University - Welding and Joining Institute (Isf); Aachen Germany
    Michael Mavany, Rwth Aachen University - Welding and Joining Institute (Isf); Aachen Germany
    Presented at ICALEO 2010

    For a reduction of manufacturing time but also for the creation of extended possibilities with innovative applications, known and well-established processes are joined towards one new method. Example...

    $28.00

  • ICALEO 2010 Paper #202 (Weld Seam Formation and Mechanical Properties of Girth Welds Performed with Laser-GMA-Hybrid Process on Pipes of Grade X65)

    Weld Seam Formation and Mechanical Properties of Girth Welds Performed with Laser-GMA-Hybrid Process on Pipes of Grade X65
    Authors:
    Sergej Gook, BAM, Federal Institute for Materials Research and Testing; Berlin Germany
    Andrey Gumenyuk, BAM, Federal Institute for Materials Research and Testing; Berlin Germany
    Michael Rethmeier, BAM, Federal Institute for Materials Research and Testing; Berlin Germany
    Presented at ICALEO 2010

    With the recent introduction of multi-kilowatt fiber lasers combining high beam quality with an impressive energy efficiency, it was possible to broaden the spectrum of laser beam and laser-hybrid welding applications widely.
    A girth laser-hybrid p...

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  • ICALEO 2010 Paper #201 (Utilizing of Laser-GMA Hybrid Welding in Industrial Application)

    Utilizing of Laser-GMA Hybrid Welding in Industrial Application
    Authors:
    Jukka Siltanen, Rautaruukki Oyj; Fl-1330 Hämeenlinna Finland
    Presented at ICALEO 2010

    The use of ultra high strength steel (UHSS) is increasing in the engineering industry and many steel manufacturers are focusing more on its production. It is easy to predict that the trend is to have even higher strength steel available on the market. Further processing of UHSS needs special attention, espe-cially the bending and welding of it can be very challenging. Typical applications in heavy engineering where the use of UHSS brings clear benefits are in the structures of load handling and transportation ve-hicles and lifting equipm...

    $28.00

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