• ICALEO 2010 Paper #102 (Comparison Of 1 Micron Transmissive Optical Materials For High Power Lasers)

    Comparison Of 1 Micron Transmissive Optical Materials For High Power Lasers
    Authors:
    Stephen Rummel, II-VI Incorporated; Saxonburg PA USA
    Gary Herrit, II-VI Incorporated; Saxonburg PA USA
    Alan Hedges, II-Vi Incorporated; Saxonburg PA USA
    Presented at ICALEO 2010

    With the advent of very high power fiber and disk lasers, choosing the right optical material for the application is vitally important. The best optic for an application is determined by a combination of factors about the application itself and the optic material properties. Important application factors include the laser power, laser type, and the users application. Material properties that the designer ...

    $28.00

  • ICALEO 2010 Paper #101 (Online Focus Shift Measurement in High Power Fiber Laser Welding)

    Online Focus Shift Measurement in High Power Fiber Laser Welding
    Authors:
    Daniel Reitemeyer, BIAS - Bremer Institut fuer angewandte Strahltechnik GmbH; Bremen Germany
    Thomas Seefeld, BIAS - Bremer Institut fuer angewandte Strahltechnik GmbH; Bremen Germany
    Frank Vollertsen, BIAS - Bremer Institut fuer angewandte Strahltechnik GmbH; Bremen Germany
    Presented at ICALEO 2010

    The occurrence of focus shift in high power fiber laser welding has been reported. The small percentage of laser light absorbed in the optical elements of the welding head leads to a thermal focus shift. Contaminations on the optical surfaces are enhancing the absorption and thus the focus shift. So, o...

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  • ICALEO 2010 Paper #1006 (Distortion and Residual Stresses in Laser Beam Welded Shaft-Hub Joints)

    Distortion and Residual Stresses in Laser Beam Welded Shaft-Hub Joints
    Authors:
    Frank Buschenhenke, BIAS - Bremer Institut für angewandte Strahltechnik; Bremen Germany
    Michael Hofmann, FRM II - Forschungsneutronenquelle Heinz Maier-Leibnitz; Garching Germany
    Thomas Seefeld, BIAS - Bremer Institut fuer angewandte Strahltechnik GmbH; Bremen Germany
    Frank Vollertsen, BIAS - Bremer Institut fuer angewandte Strahltechnik GmbH; Garching Germany
    Presented at ICALEO 2010

    In laser beam welding processes, a serious challenge is to control the distortion during the process. The understanding of the whole process chain in view of different distortion potentials intro...

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  • ICALEO 2010 Paper #1005 (Welding Zinc Coated Steels: New Joint Design and Strategy with Scanner Technology)

    Welding Zinc Coated Steels: New Joint Design and Strategy with Scanner Technology
    Authors:
    Klaus Loeffler, TRUMPF Laser & Systems GmbH; Ditzingen Germany
    Tim Hesse, TRUMP Werkzeugmaschinen GmbH; Ditzingen Germany
    Peter Kaupp, TRUMPF Laser- und Systemtechnik GmbH; Ditzingen Germany
    Presented at ICALEO 2010

    The existing problems of weld defects in welidng zinc coated steels in a overlap situation are present in the automotive industry. The root cause is the different melting temperature of zinc and steel. Zinc vapourises already at 900C versus steel melts at 1500C. The result if not taking care of the outgasing are pinholes and crates in the weld seam. Extensive researc...

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  • ICALEO 2010 Paper #1004 (Remote Laser Welding of Zinc-Coated Sheet Metal Component in a Lap Configuration Utilizing Humping Effect )

    Remote Laser Welding of Zinc-Coated Sheet Metal Component in a Lap Configuration Utilizing Humping Effect
    Authors:
    Hongping Gu, Stonach Centre for Innovation, Magna International Inc; Aurora ON Canada
    Boris Shulkin, Stonach Centre for Innovation, Magna International Inc; Aurora, Ontario Canada
    Presented at ICALEO 2010

    With the advancement of high power fiber delivery lasers, remote laser welding becomes a reality and more and more systems have been introduced into production lines. Remote laser welding takes the advantages of less mechanical movement and better accessibility of the beam to the workpiece, thus fast processing speed can be achieved. In most cases, remote laser weldi...

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  • ICALEO 2010 Paper #1002 (Laser Welding Applied to Advanced High Strength Steels for Automotive Applications)

    Laser Welding Applied to Advanced High Strength Steels for Automotive Applications
    Authors:
    Rosa Arias, Aimen Technology Centre; O Porrino Spain
    Alvaro Prada, Aimen Technology Centre; O PorriO
    Eva Vaamonde C, Aimen Technology Centre; O PorriO Spain
    Ambroise VandewynckLe, Aimen Technology Centre; O PorriO
    David Gutierrez, Ctm Technology Centre; Manresa Spain
    Antoni Lara, Ctm Technology Centre; Manresa Spain
    Michel GarcA, Gestamp R & D - Autotech Engineering; Sant Esteve Sesrovires ( Barcelona) Spain
    Presented at ICALEO 2010

    The use of Advanced High Strength Steels (AHSS) in the car industry is permitting to...

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  • ICALEO 2009 Paper #P4 (Laser-assisted Deposition of Good Carbon - From Diamond Films to Nanotubes (Plenary, 30 minutes))

    Laser-assisted Deposition of Good Carbon — From Diamond Films to Nanotubes (Plenary, 30 minutes)
    Authors:
    Y.S. Zhou, -; -
    H. Ling, -; -
    Z.Q. Xie, -; -
    W. Xiong, -; -
    M. Mahjouri-Samani, -; -
    Y. Gao, -; -
    M. Mitchell, -; -
    Yongfeng Lu, University of Nebraska - Lincoln; Lincoln NE USA
    Presented at ICALEO 2009

    Carbon materials of versatile structures, from diamond, graphite, carbon nanotube to graphene, exhibit distinct properties and find applications in different fields. Laser-assisted deposition methods were developed for growing materials with unparallel advantages, such as selective interaction...

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  • ICALEO 2009 Paper #P165 (The Tribological Applications of WC-Co Electro-Spark Coatings Modified Via Laser Treatment)

    The Tribological Applications of WC-Co Electro-Spark Coatings Modified Via Laser Treatment
    Authors:
    Norbert Radek, Technical University of Kielce; Kielce Poland
    Konrad Bartkowiak, Fraunhofer IWS; Dresden Germany
    Matthias Luetke, Presenter not author - Technische Universitat Dresden; Dresden Germany
    Presented at ICALEO 2009

    Electro spark alloying (ESA) technique is a well established method. However, new lasers are becoming available on the market that can make this technique more attractive for various industry applications, e.g.: surface texturing technology has significant advantages for the wear decreasing into sliding friction. The work reported here concentrates o...

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  • ICALEO 2009 Paper #P163 (Femtosecond Laser Materials Processing in the Townes Laser Institute)

    Femtosecond Laser Materials Processing in the Townes Laser Institute
    Authors:
    Mark Ramme, Townes Laser Institute, CREOL, UCF; Orlando FL USA
    Jiyeon Choi, Townes Laser Institute, CREOL, UCF; Orlando FL USA
    Troy Anderson, Townes Laser Institute, CREOL, UCF; Orlando FL USA
    Martin Richardson, Townes Laser Institute, CREOL, UCF; Orlando FL USA
    Presented at ICALEO 2009

    Femtosecond Laser Materials Processing (FLMP) is an active area of research for its superior processing quality compared to the conventional laser processing with nano- and picosecond pulses. Advancements in femtosecond laser technology including the development of high repetition rate fiber-based...

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  • ICALEO 2009 Paper #P160 (Drilling of Aluminum with a High Power Q-switched 532nm Laser)

    Drilling of Aluminum with a High Power Q-switched 532nm Laser
    Authors:
    Leonard Migliore, Coherent, Inc.; Santa Clara CA USA
    George Nazary, Coherent, Inc; Santa Clara CA USA
    Presented at ICALEO 2009

    Recent advances in the design of gain modules for diode-pumped solid-state lasers have allowed the manufacture of extremely compact high power products. Their high Q-switched pulse energy combined with good mode quality 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 this product is suited is the rapid drilling of high-quality holes in aluminum sheet. This pape...

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