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  • ICALEO 2006 Paper #1606 (Surface Layer Modification of AlSi6Cu4 Aluminium Alloy via CO2 Laser Treatment)

    Surface Layer Modification of AlSi6Cu4 Aluminium Alloy via CO2 Laser Treatment
    Authors:
    Andrzej Wolynski, Poznan University of Technology; Poznan Poland
    Jacek Borowski, Poznan University of Technology; Poznan Poland
    Konrad Bartkowiak, Fraunhofer Center for Coatings and Laser Appliations; Plymouth MI USA
    Konrad Bartkowiak, Poznan University of Technology; Poznan Poland
    Leszek Foltynowicz , Poznan University of Technology; Poznan Poland
    Presented at ICALEO 2006

    The AlSi6Cu4 is a well known aluminum alloy used for combustion engine cylinder heads in mass production. Long life of the engine is important requirement in the world-wide automotive mar...

    $28.00

  • ICALEO 2006 Paper #1605 (Empirical Modelling of Laser Texturing of 304L Stainless Steel)

    Empirical Modelling of Laser Texturing of 304L Stainless Steel
    Authors:
    Adriana Soveja, LTm - IUT Le Creusot; Le Creusot France
    Eugen Cicala, University Politehnica of Timisoara; Timisoara Romania
    Bruno Martin, ISAT Nevers; Nevers Cedex France
    Gerard Duffet, IUT Chalon sur Saone; Chalone sur Saone France
    Dominique Grevey, LTm - IUT Le Creusot; Le Creusot France
    Jean-Marie Jouvard, LTm - IUT Le Creusot; Le Creusot France
    Presented at ICALEO 2006

    The automotive industry needs for tools with textured metallic surfaces increased progressively during the last years. In response to these needs, the texturing process has evolved in view ...

    $28.00

  • ICALEO 2006 Paper #1604 (Integrated Heat Treatment - Comparison of Different Machine Concepts)

    Integrated Heat Treatment - Comparison of Different Machine Concepts
    Authors:
    Steffen Bonss, Fraunhofer IWS; Dresden Germany
    Jan Hannweber, Fraunhofer IWS; Dresden Germany
    Marko Seifert, Fraunhofer IWS; Dresden Germany
    Udo Karsunke, Fraunhofer IWS; Dresden Germany
    Berndt Brenner, Fraunhofer IWS; Dresden Germany
    Eckhard Beyer, Fraunhofer IWS; Dresden Germany
    Presented at ICALEO 2006

    Heat treatment of machine components or automotive parts traditionally is done at separate facilities or companies. Very effective manufacturing becomes possible if heat treatment processes can be integrated in line to avoid logistics and to save time a...

    $28.00

  • ICALEO 2006 Paper #1603 (Experimental Analysis of Laser Stripping Effects on Thin Composites)

    Experimental Analysis of Laser Stripping Effects on Thin Composites
    Authors:
    Ted Reutzel, ARL, The Penn State University; State College PA USA
    Kent Knock, Sikorsky Aircraft Corporation; Stratford CT USA
    Mitch Wool, General Lasertronics Corporation; San Jose CA USA
    Ken Meinert, ARL Penn State; State College PA USA
    Presented at ICALEO 2006

    Currently, orbital hand sanding is used to remove paint from composite rotor blades during refurbishment operations. This method is time consuming, expensive, generates significant hazardous waste, and often results in secondary damage to the blade. Safe, effective removal of paint can be achieved using laser processing ...

    $28.00

  • ICALEO 2006 Paper #1602 (Dual Function Laser Surface Treatment Improves Die Casting Die Life)

    Dual Function Laser Surface Treatment Improves Die Casting Die Life
    Authors:
    Zhiyue Xu, Argonne National Laboratory; Argonne IL USA
    Claude B. Reed, Argonne National Laboratory; Argonne IL USA
    Presented at ICALEO 2006

    Aluminum die casting dies, used to cast the light automobile parts for better fuel economy, face two major failure mechanisms: hot check and soldering. Hot check is a failure phenomenon of surface thermal cracks caused by thermal cycling loads during die casting. And soldering is a failure in which the melted aluminum chemically reacts with die surface material and bonds to the surface after solidification. Die casting dies are extremely expensive and their costs accou...

    $28.00

  • ICALEO 2006 Paper #1601 (Optimisation of Production Rate in Diode Laser Hardening)

    Optimisation of Production Rate in Diode Laser Hardening
    Authors:
    Barbara Previtali, Politecnico Di Milano; Milano Italy
    Edoardo Capello, Politecnico di Milano; milan Italy
    Moreno Castelnuovo, Politecnico di Milano; Milano Italy
    Presented at ICALEO 2006

    Thanks to the development of diode lasers, laser hardening of steels has become a stable, less expensive and reliable process if compared to CO2 laser hardening. Nevertheless, it is still characterized by a low production rate, and the time required for the hardening of a component is often not compatible with the limited cycle time imposed by the high investment costs of the laser technology. The present paper is a con...

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  • ICALEO 2006 Paper #1509 (Laser Surface Modification of NiTi with Mo and Zr)

    Laser Surface Modification of NiTi with Mo and Zr
    Authors:
    HC Man, The Hong Kong Polytechnic University; Hong Kong
    Ng Ka Wai, Hong Kong Polytechnic University; Hong Kong
    TM Yue, The Hong Kong Polytechnic University; Hong Kong
    Presented at ICALEO 2006

    Because of its biocompatibility, superelasticity and shape memory characteristics, NiTi alloys have been gaining immerse interest in the medical field. Applications such as stent and other implant devices have been widely accepted in the industry. However, there are still concerns on the wear resistance of this alloy if it is going to be implanted for a long time. Debris from wear and the subsequent release of Ni+ i...

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  • ICALEO 2006 Paper #1508 (3-D Biomimetic Micro-Channel Network by Laser Direct Writing)

    3-D Biomimetic Micro-Channel Network by Laser Direct Writing
    Authors:
    Donghyuck Kam, University of Michigan; Ann Arbor MI USA
    Presented at ICALEO 2006

    Nanosecond and femtosecond near IR laser direct write is a useful tool for fabricating 3D, multiple-level microfluidic structures. Using a diode-pumped nanosecond fundamental Nd:YAG laser, multi-depth, multi-width microstructures on silicon were fabricated without lithography-based technology. The molten material inside the microchannel was ejected by a modified assist gas and thus the amuount of laser ablation was increased. The solidified molten material and the debris build-up due to the strong thermal reaction of silicon to the nanosecond IR...

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  • ICALEO 2006 Paper #1506 (CO2 Laser Irradiation of a Magnesia Partially Stabilized Zirconia (MgO-PSZ) Bioceramic and the Subsequent Improvements in Human Osteoblast Cell Adhesion)

    CO2 Laser Irradiation of a Magnesia Partially Stabilized Zirconia (MgO-PSZ) Bioceramic and the Subsequent Improvements in Human Osteoblast Cell Adhesion
    Authors:
    Jonathan Lawrence, Loughborough University; Leicestershire Great Britain
    Liang Hao, Loughborough University; Leicestershire Great Britain
    Presented at ICALEO 2006

    In order to acquire the ideal surface properties to favour osseointegration at the implant-bone interface, osteoblast cells were used in an in vitro test to examine changes in cell adhesion on a magnesia partially stabilised zirconia (MgO-PSZ) bioceramic after CO2 laser treatment. The surface roughness, microstructure, crystal size and surface energy of untreated...

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  • ICALEO 2006 Paper #1505 (Laser-Induced Wettability Characteristics Modification and the Effect Thereof on Cell Response on a Titanium Alloy)

    Laser-Induced Wettability Characteristics Modification and the Effect Thereof on Cell Response on a Titanium Alloy
    Authors:
    Jonathan Lawrence, Loughborough University; Leicestershire Great Britain
    Liang Hao, Loughborough University; Leicestershire Great Britain
    Presented at ICALEO 2006

    It was found that interaction of a Nd:YAG laser beam with the Ti6Al4V alloy resulted in the wettability characteristics of the bio-metal improving. Such improvements in the wettability characteristics of the Ti6Al4V alloy were found to be due to: an increase in the surface roughness; and increase in the surface oxygen content and an increase in the polar component of the surface energy. From in vitro...

    $28.00

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