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  • JLA Vol:24 Iss:3 (Optimization of the aluminum oxide properties for adhesive bonding by laser surface pretreatment)


    Authors:
    Rico Rechner
    Institute of Surface and Manufacturing Technology, Technische Universita¨t Dresden, D-01069 Dresden, Germany

    Irene Jansen
    Fraunhofer Institute for Material and Beam Technology, D-01277 Dresden, Germany

    Eckhard Beyer
    Institute of Surface and Manufacturing Technology, Technische Universita¨t Dresden, D-01069 Dresden, Germany and Fraunhofer Institute for Material and Beam Technology, D-01277 Dresden, Germany


    The laser pretreatment of AlMg3 has been conducted to investigate the influence of the fluence on the oxide properties. Therefore, the aluminum surface is pretreated by a fiber laser and subsequently analyzed b...

    $25.00

  • JLA Vol:24 Iss:3 (Laser cladding with scanning optics: Effect of power adjustment)


    Authors:
    Joonas Pekkarinen
    Veli Kujanpa¨a¨
    Antti Salminen
    Laboratory of Laser Processing, Department of Mechanical Engineering, Lappeenranta University of Technology, Tuotantokatu 2, 53850 Lappeenranta, Finland


    Laser cladding with fiber laser using scanning optics is a relatively new way of laser cladding. Modern oscillating scanners enable laser power adjustment according to scanning direction. This is a versatile tool for making process more stable as well as modifying the shape of clad bead. Laser cladding was made using 5 kW IPG fiber laser with ILV-oscillating scanner, using 316L powder as clad material and S355 mild steel plate as substrate mate...

    $25.00

  • JLA Vol:24 Iss:3 (Laser cladding for railway repair and preventative maintenance)


    Authors:
    Adam Clare
    Olusola Oyelola
    Janet Folkes
    Peter Farayibi
    Innovative Manufacturing Processes Group, Manufacturing Division, Faculty of Engineering, The University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom


    Rolling contact fatigue, amongst other mechanisms of wear, between railway track and train wheel ensures that periodic replacement of worn track and other key components such as switches must be undertaken. The cost associated with repairing/replacing track is significant. This places a financial burden upon the rail network provider, creates a significant carbon footprint associated with remanufacture of track, an...

    $25.00

  • JLA Vol:24 Iss:3 (Contributing factors to fires in clinical settings during medical laser applications)


    Authors:
    J. Pierce
    S. Lacey
    R. Lopez
    J. Lippert
    J. Franke
    Environmental and Occupational Health Sciences, University of Illinois at Chicago, 2121 W. Taylor Street—MC 922, Chicago, Illinois 60612


    An estimated 650 fires occur in the surgical environment annually in the U.S.; a figure which may be severely underreported. Any fire in the surgical environment can have devastating implications for patient safety and is clearly an occupational risk to healthcare personnel. Literature searches of the PubMed and Rockwell Laser Industries Laser Accident Databases were performed in order to (1) identify factors and sources affecting the r...

    $25.00

  • JLA Vol:24 Iss:3 (Quality detection and control during laser cutting progress with coaxial visual monitoring)


    Authors:
    Peng Wen
    Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People’s Republic of China

    Yongqiang Zhang
    Shougang Research Institute of Technology, Beijing 100043, People’s Republic of China

    Wuzhu Chen
    Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People’s Republic of China


    A system of coaxial visual detection and closed-loop control is developed in laser cutting to automatically optimize cutting speed to obtain best cutting quality. The sparks behavior is observed under different cutting speeds by side visual monitoring. It is proved that the maximum number of pix...

    $25.00

  • JLA Vol:24 Iss:3 (Trepanning drilling of microholes on cemented tungsten carbide using femtosecond laser pulses)


    Authors:
    Khai Xuan Pham
    Rie Tanabe
    Yoshiro Ito
    Department of Mechanical Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan


    Microholes of 100–300 µm diameters were trepanned on cemented tungsten carbide plates of 0.5 and 1 mm thicknesses by means of femtosecond laser pulses using a galvano-scanner with an f-θ lens of 80 mm focal length. It was found that the focus position of the laser beam relative to the sample surface affects the drilled hole shape and drilling speed. Focus on the surface produced a less tapered hole and a higher machining speed than focus 0.5 mm away from the surfa...

    $25.00

  • JLA Vol:24 Iss:3 (2D longitudinal modeling of heat transfer and fluid flow during multilayered direct laser metal deposition process)


    Authors:
    Simon Morville
    Muriel Carin
    LIMATB, Universite´ de Bretagne-Sud/UEB, Centre de recherche Ch. Huygens, Rue de Saint Maude´, BP 92116, 56321 Lorient cedex, France

    Patrice Peyre
    Myriam Gharbi
    PIMM, UMR 8006 CNRS-Arts et Me´tiers Paris Tech, 151 Boulevard de l’Hoˆpital, 75013 Paris, France

    Denis Carron
    Philippe Le Masson
    LIMATB, Universite´ de Bretagne-Sud/UEB, Centre de recherche Ch. Huygens, Rue de Saint Maude´, BP 92116, 56321 Lorient cedex, France

    Re´my Fabbro
    PIMM, UMR 8006 CNRS-Arts et Me´tiers Paris Tech, 151 Boulevard de l’Ho&ci...

    $25.00

  • JLA Vol:24 Iss:3 (Investigation of the effects of basic laser material interaction parameters in laser welding)


    Authors:
    W. J. Suder
    S. W. Williams
    Welding Engineering and Laser Processing Centre, Cranfield University, MK43 0AL, United Kingdom


    The depth of penetration achieved in continuous wave (CW) laser welding results from a balance of many complicated phenomena, which are linked with the characteristics of the heat source. In this work, the laser welding process has been investigated in terms of basic laser material interaction parameters: power density and interaction time. It has been shown that these two parameters are insufficient to characterize the laser welding process. Thus, a third parameter, specific point energy, has been introduced, which along with the power densi...

    $25.00

  • JLA Vol:24 Iss:3 (Laser hole sealing of commercially pure grade 1 titanium)


    Authors:
    Y. D. Huang
    National Defense Key Disciplines Laboratory of Light Alloy Processing Science and Technology, Nanchang Hangkong University, Nanchang 330063, People’s Republic of China; Centre for Advanced Materials Joining, University of Waterloo, Waterloo, Ontario N2L3G1, Canada; and State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, People’s Republic of China

    A. Pequegnat
    M. I. Khan
    Centre for Advanced Materials Joining, University of Waterloo, Waterloo, Ontario N2L3G1, Canada

    J. C. Feng
    State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin...

    $25.00

  • JLA Vol:24 Iss:4 (EDITORIAL)


    Authors:
    Andreas Ostendorf

    $25.00

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