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  • ICALEO 2005 Paper #P535 (Expansion of Trinocular CCD-Based Optical Detector to Multi-Track Laser Cladding Real-Time Monitoring)

    Expansion of Trinocular CCD-Based Optical Detector to Multi-Track Laser Cladding Real-Time Monitoring
    Authors:
    Ehsan Toyserkani, University of Waterloo; Waterloo Ontario Canada
    Mehrdad Iravani-Tabrizipour, University of Waterloo; Waterloo ON Canada
    Amir Khajepour, University of Waterloo; Waterloo ON Canada
    Matthew Asselin, University of Waterloo; Waterloo On Canada
    Presented at ICALEO 2005

    Real-time monitoring of laser cladding for measuring the clad geometry provides essential signals for a closed-loop control system utilized in the process. In addition, the measurement can be used in the analysis of the clad quality and the process. In general, the real-...

    $28.00

  • ICALEO 2005 Paper #P534 (Laser Cladding on Cast Iron Substrate)

    Laser Cladding on Cast Iron Substrate
    Authors:
    Janne Nurminen, Ketek; Kokkola Finland
    Petri Vuoristo, Tampere University of Technology; Tampere Finland
    Presented at ICALEO 2005

    Laser cladding has been succesfully utilised on number of base materials. There is, however, very little data and knowledge available for cladding on cast iron substrates. Cast irons are difficult substrate materials for all welding processes due to its brittle microstructure. Laser cladding can solve the cracking problem indused by high heat input of other welding processes. There is still a great tendency for pore formations due to combustion of graphite. This study presentates results of cladding experime...

    $28.00

  • ICALEO 2005 Paper #P531 (Silicon Laser Alloying for Metal Dusting Environment)

    Silicon Laser Alloying for Metal Dusting Environment
    Authors:
    Muhammad Ejaz, Corrosion and Protection Centre; Manchester UK
    Presented at ICALEO 2005

    Metal dusting is catastrophic carburization process, which causes metallic materials to disintegrate into particles of graphite, carbides and metal dust. This type of degradation typically takes place in the temperature range 450-800oC in gaseous atmospheres of high carbon activity. The resistance to metal dusting can be improved by increasing the amount of silicon in a metallic material. The silicon content of an alloy is typically kept below about 2%, because it adversely affects the mechanical properties of the material; however, higher concentr...

    $28.00

  • ICALEO 2005 Paper #P530 (Visualization of Interaction Between Laser Beam and YAG-Laser-Induced Plume)

    Visualization of Interaction Between Laser Beam and YAG-Laser-Induced Plume
    Authors:
    Keisuke Kinoshita, JWRI, Osaka University; Ibaraki Osaka Japan
    Seiji Katayama, JWRI, Osaka University; Ibaraki Osaka Japan
    Shuho Tubota, Mitsubishi Heavy Industries, Ltd.; Takasago Hyogo Japan
    Takashi Ishide, Mitsubishi Heavy Industries, Ltd.; Takasago Hyogo Japan
    Yousuke Kawahito, JWRI, Osaka University; Ibaraki Osaka Japan
    Presented at ICALEO 2005

    This study was performed to obtain a fundamental knowledge of interaction between a laser beam and a laser-induced plume during welding with a YAG or a fiber laser. The interaction was evaluated and interpreted by...

    $28.00

  • ICALEO 2005 Paper #P528 (The Influence of the Low-Energy, Monochromatic Irradiation in Blue Spectral Range upon Vital Functions of Rabbits Organisms, (Comparative Analysis))

    The Influence of the Low-Energy, Monochromatic Irradiation in Blue Spectral Range upon Vital Functions of Rabbits Organisms, (Comparative Analysis)
    Authors:
    Leonid Linnik, Filatov Institute; Odessa Ukraine
    Oleksandr Pekaryk, Technology R&D Company; Kiev Ukraine
    Presented at ICALEO 2005

    As a result of the STCU project # 2604 implementation, we got results, which describe the impact of low-energy, monochromatic light upon rabbit's organisms. The exposures with wavelengths : 412 nm (blue), 520 nm (green) and 605 nm (orange) were studied. The mean power of applied irradiation was within range from 0.05 to 0.25 mW. The immunological, morphological and biochemical aspects of monochromat...

    $28.00

  • ICALEO 2005 Paper #P525 (T-Joint Properties Optimisation in Al-Mg-Si Alloy Laser Welding)

    T-Joint Properties Optimisation in Al-Mg-Si Alloy Laser Welding
    Authors:
    Gerard Duffet, LTm; Chalon Sur Saone France
    Dominique Grevey, LTm; Le Creusot France
    Eugen Cicala, Polytechnic University of Timisoara; Timisoara Romania
    Henri Andrzejewski, LTm; Le Creusot France
    Presented at ICALEO 2005

    Main focus of development in aircraft materials properties is a reduction of the aircraft life cost of aircraft. One of the means to achieve life cost reduction is to improve mechanical properties of aluminium alloys. New production techniques allow materials properties improvements. T-joint properties optimisation in Al-Mg-Si alloy laser welding is one of these mean...

    $28.00

  • ICALEO 2005 Paper #P520 (The Effect of Process Parameters on the Gap Bridging Capability for CO2 Laser-GMA Hybrid Welding)

    The Effect of Process Parameters on the Gap Bridging Capability for CO2 Laser-GMA Hybrid Welding
    Authors:
    Hyunbyung Chae, Korea Institute of Industrial Technology; Incheon Korea
    Cheolhee Kim, Korea Institute of Industrial Technology; Incheon Korea
    Jeonghan Kim, Korea Institute of Industrial Technology; Incheon Korea
    Sehun Rhee, Hanyang University; Seoul Korea
    Presented at ICALEO 2005

    For laser welding in shipbuilding industry, gap bridging capability is one of the most important characteristics to achieve the high productivity and good weld quality. Recently, laser-GMA hybrid welding process is receiving a spotlight as a distinctive method to overcome the ...

    $28.00

  • ICALEO 2005 Paper #P518 (Intensity Modulated Focus: A Virtual 'Tool-Tip' for Femtosecond Laser Direct Writing)

    Intensity Modulated Focus: A Virtual 'Tool-Tip' for Femtosecond Laser Direct Writing
    Authors:
    K.J. Moh, Nanyang Technological University; Singapore
    David K.Y. Low, Singapore Institute of Manufacturing Technology (SIMTech); Singapore
    Y.Y. Tan, Nanyang Technological University; Singapore
    Z.L. Li, Singapore Institute of Manufacturing Technology; Singapore
    X.C. Yuan, Nanyang Technological University; Singapore
    Presented at ICALEO 2005

    Waveguides written in glass by femtosecond lasers using low numerical aperture (N.A.) and long focal length systems generally have an elliptical cross section owing to the elongated focal shape of such syst...

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  • ICALEO 2005 Paper #P517 (Magnetic Confinement of Plasmas in Laser-Induced Breakdown Spectroscopy for Improved Sensitivity and Accuracy)

    Magnetic Confinement of Plasmas in Laser-Induced Breakdown Spectroscopy for Improved Sensitivity and Accuracy
    Authors:
    T. Gebre, University of Nebraska-Lincoln; Lincoln NE USA
    Yongfeng Lu, University of Nebraska-Lincoln; Lincoln NE USA
    Y.X. Han, University of Nebraska-Lincoln; Lincoln NE USA
    Presented at ICALEO 2005

    Laser-induced plasmas were created by irradiating KrF eximer laser pulses on different substrates such as Si, Al, Fe and Co. A transverse magnetic field was applied to confine the plasmas. Plasma life times were measured using a fast phototube and a fast oscilloscope in the presence and absence of a magnetic field. The results indicate that the life times o...

    $28.00

  • ICALEO 2005 Paper #P516 (Laser Assisted Turning of Hardened Steel)

    Laser Assisted Turning of Hardened Steel
    Authors:
    Katsuhiko Sakai, Shizuoka University; Hamamatsu Japan
    Presented at ICALEO 2005

    A new machining method for turning of hardened steel is presented in this paper. It is a hybrid machining of conventional turning and laser heating of the material. As hardened steel is too hard to cut, it is grounded to improve it?s dimensional accuracy, though this process have poor productivity and requires relatively long time. By using laser-heating technology, hardness of steel can be reduced effectively, and thus turning is available for hardened steel instead of grinding. The softened area is limited in front of the cutting tool and then they will be removed, ...

    $28.00

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