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  • ICALEO 2008 Paper #M309 (Weld Depth Control in Fiber Laser Welding of Thin Metal Sheets)

    Weld Depth Control in Fiber Laser Welding of Thin Metal Sheets
    Authors:
    Jens Gedicke, Fraunhofer Institute for Lasertechnology; Aachen Germany
    Alexander Olowinsky, Fraunhofer Institute for Laser Technology; Aachen Germany
    Ulrich Jansen, Fraunhofer Institute for Lasertechnology; Aachen Germany
    Wolfgang Schulz, Fraunhofer Institute for Laser Technology; Aachen Germany
    Arnold Gillner, Fraunhofer Institute for Laser Technology; Aachen Germany
    Presented at ICALEO 2008

    Laser beam welding of electrical connections or sealing of casings are typical applications in the field of precision engineering. Controlling the shape of the welded connections is a...

    $28.00

  • ICALEO 2008 Paper #M308 (Laser Based Contacting of Thin Metal Coated Active Elements)

    Laser Based Contacting of Thin Metal Coated Active Elements
    Authors:
    Stephan Neugebauer, Bayerisches Laserzentrum Gmbh; Erlangen Germany
    Florian Albert, Bayerisches Laserzentrum Gmbh; Erlangen Germany
    Michael Schmidt, Bayerisches Laserzentrum Gmbh; Erlangen Germany
    Thomas Frick, Bayerisches Laserzentrum; Erlangen Germany
    Presented at ICALEO 2008

    Present research in the field of active noise absorption at automotive assemblies deals with piezoelectric elements embedded into parts like gear boxes or car bodies. Under closed loop operation, these elements are able to modify the oscillation behaviour of the whole body. This may significantly reduce the assembl...

    $28.00

  • ICALEO 2008 Paper #M307 (A Study of High-Speed Remote Micro-Processing with a Galvanometer Based Fiber Laser)

    A Study of High-Speed Remote Micro-Processing with a Galvanometer Based Fiber Laser
    Authors:
    F. Parker, National Centre for Laser Applications (Ncla); Galway Ireland
    C. O\'Brien, Ncla; Galway Ireland
    F. Martino-Gauchi, Institut D\\'Optique; Palaiseau France
    A. Conneely, Ncla; Galway Ireland
    G.M. O\'Connor, Ncla; Galway Ireland
    J. Magee, Rofin; Galway Ireland
    Presented at ICALEO 2008

    High power fiber lasers offer several advantages for industrial use; high power with stable output, parameter flexibility, low maintenance costs, high efficiency and small footprint. A 200W SPI / Rofin fiber laser system was used to study the potentia...

    $28.00

  • ICALEO 2008 Paper #M306 (High Speed Video-based Melt Pool Surveillance in Laser Spot Welding)

    High Speed Video-based Melt Pool Surveillance in Laser Spot Welding
    Authors:
    Nicolaj C. Stache, RWTH-Aachen University, Institute of Imaging & Computer Vision; Aachen Germany
    Jens Gedicke, Fraunhofer Institute for Laser Technology; Aachen Germany
    Jonas Dieckelmann, RWTH-Aachen University, Institute of Imaging & Computer Vision; Aachen Germany
    Robert Firnich, RWTH-Aachen University, Institute of Imaging & Computer Vision; Aachen Germany
    Alexander Olowinsky, Fraunhofer Institute for Laser Technology; Aachen Germany
    Peter Abels, Fraunhofer Institute for Laser Technology; Aachen Germany
    Til Aach, RWTH-Aachen University, Institute of Imag...

    $28.00

  • ICALEO 2008 Paper #M305 (Hermetic Joining of Micro-Devices using a Glass Frit Intermediate Layer and a Scanning Laser Beam)

    Hermetic Joining of Micro-Devices using a Glass Frit Intermediate Layer and a Scanning Laser Beam
    Authors:
    Qiang Wu, Heriot Watt University; Edinburgh Great Britain
    Norbert Lorenz, Heriot Watt University; Edinburgh Great Britain
    Changhai Wang, Heriot Watt University; Edinburgh Great Britain
    Kevin Cannon, Ge Aviation Systems; Suffolk Great Britain
    Andrew J. Moore, Heriot Watt University; Edinburgh Great Britain
    Duncan P. Hand, Heriot Watt University; Edinburgh Great Britain
    Presented at ICALEO 2008

    Many micro-electro-mechanical-systems (MEMS) devices require hermetic sealing to prevent moisture and dust ingress. A number of differ...

    $28.00

  • ICALEO 2008 Paper #M304 (Novel Fusion Welding Technology of Glass Using Ultrashort Pulse Lasers (Invited Presentation - 40 Minutes))

    Novel Fusion Welding Technology of Glass Using Ultrashort Pulse Lasers (Invited Presentation - 40 Minutes)
    Authors:
    Isamu Miyamoto, Osaka University; Hyogo Japan
    Alexander Horn, Lehrstuhl fuer Lasertechnik; Aachen Germany
    Dirk Wortmann, Lehrstuhl fuer Lasertechnik; Aachen Germany
    Jens Gottmann, Lehrstuhl fuer Lasertechnik; Aachen Germany
    Fumiyo Yoshino, IMRA America, Inc; Fremont CA USA
    Ilja Mingareev, Lehrstuhl fuer Lasertechnik; Aachen Germany
    Michael Schmidt, Bayerisches Laserzentrum; Erlangen Germany
    Peter Bechtold, Bayerisches Laserzentrum; Erlangen Germany
    Yasuhiro Okamoto, Okayama University; Okayama Ja...

    $28.00

  • ICALEO 2008 Paper #M301 (In-Process Monitoring and Adaptive Control in Micro Lap Seam Welding with Fiber Laser)

    In-Process Monitoring and Adaptive Control in Micro Lap Seam Welding with Fiber Laser
    Authors:
    Terumasa Ohnishi, Osaka University; Osaka Japan
    Yousuke Kawahito, Osaka University; Ibaraki Japan
    Seiji Katayama, Osaka University; Osaka Japan
    Presented at ICALEO 2008

    The objective of this research is to obtain fundamental knowledge of in-process monitoring and adaptive control for fully-penetrated welds in micro lap seam welding of 0.1 mm-thin titanium sheets with a 100-W single-mode fiber laser. In these welding conditions aiming conventionally and adaptively at the formation of a stable weld bead on the bottom surface, when welding speed decreased, the weld was changed f...

    $28.00

  • ICALEO 2008 Paper #M208 (Analysis of Influence Factors on Microscale Laser Shock Processing in Fem Simulation)

    Analysis of Influence Factors on Microscale Laser Shock Processing in Fem Simulation
    Authors:
    Liangcai Xiong, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
    Zhigang Che, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
    Tielin Shi, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
    Rui Peng, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
    Presented at ICALEO 2008

    Microscale Laser Shock Processing (μLSP) can generate plastic deformation and compressive residual stresses in Micro Electromechanical Systems (MEMS) components through laser-induced pl...

    $28.00

  • ICALEO 2008 Paper #M207 (Numerical Simulation on Shock Wave Propagation for Microscale Laser Shock Processing)

    Numerical Simulation on Shock Wave Propagation for Microscale Laser Shock Processing
    Authors:
    Liangcai Xiong, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
    Zhigang Che, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
    Nan Tang, No.51 Middle School of Zhengzhou; Zhengzhou Peoples Republic of China
    Tielin Shi, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
    Presented at ICALEO 2008

    Microscale Laser Shock Processing (μLSP) can generate compressive residual stress in Micro Electromechanical Systems (MEMS) components through laser-induced plasma and pressure pulse for impro...

    $28.00

  • ICALEO 2008 Paper #M205 (Resonance Raman Spectra of the Overcooled Laser-induced Al Plasmas)

    Resonance Raman Spectra of the Overcooled Laser-induced Al Plasmas
    Authors:
    X.K. Shen, University of Nebraska-Lincoln; Lincoln NE USA
    H. Ling, University of Nebraska-Lincoln; Lincoln NE USA
    Y.F. Lu, University of Nebraska - Lincoln; Lincoln NE USA
    Presented at ICALEO 2008

    Raman spectra of the overcooled laser-induced Al plasmas have been studied using an optical parametric oscillator (OPO) wavelength-tunable laser (215-2550 nm, 6ns) as the re-exciting source. Q-switched neodymium yttrium-aluminum-garnet (Nd:YAG) laser pulses (532 nm, 6 ns) with a laser fluence of 20 J/cm2 were used to generate plasmas from an Al alloy target. The laser fluence of the OPO wavelength-tu...

    $28.00

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