• ICALEO 2006 Paper #1805 (Parametric Analysis of Selective Laser Melting Technology)

    Parametric Analysis of Selective Laser Melting Technology
    Authors:
    I. Yadroitsev, ENISE; Saint-Etienne Cedex 2 France
    BERTRAND Philippe, ENISE; Saint Etienne France
    I. Smurov, ENISE; France
    Presented at ICALEO 2006

    Selective laser manufacturing (SLS/SLM) is applied for manufacturing 3D objects from different powders (Inox 904L, Ni625, Cu/Sn, W). Experiments were carried out on a PHENIX PM100 machine (50 W fibre laser, volume of fabrication: a 250mm diameter by 300mm height cylinder. Width of laser sintered line from Inox 904L powder on metallic substrate was studied applying different laser power P and beam velocity V (V=60-240mm/s) keeping effective energy input con...

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  • ICALEO 2006 Paper #1806 (A Study on the Selective Dual Laser Sintering Process for the Solid Freeform Fabrication System)

    A Study on the Selective Dual Laser Sintering Process for the Solid Freeform Fabrication System
    Authors:
    Dong Soo Kim, Korea Institute of Machinery & Materials; Daejeon Korea
    Byung Oh Choi, Korea Institute of Machinery & Materials; Daejeon Korea
    Kyung Hyun Choi, Cheju National University; Jeju-si Korea
    Sung Woo Bae, Korea Institute of Machinery & Materials; Daejeon Korea
    Young Jin Ahn, Korea Institute of Machinery & Materials; Daejeon Korea
    Presented at ICALEO 2006

    A solid freeform fabrication (SFF) system using selective laser sintering (SLS) is currently recognized as a leading process and SLS extends the applications to machinery and auto...

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  • ICALEO 2006 Paper #1807 (Development of Polyamide-6 Powders and Its Effect on the Fabrication by Selective Laser Sintering Process)

    Development of Polyamide-6 Powders and Its Effect on the Fabrication by Selective Laser Sintering Process
    Authors:
    Dong Soo Kim, Korea Institute of Machinery & Materials; Daejeon Korea
    Chung Hwan Kim, Korea Institute of Machinery & Materials; Daejeon Korea
    Hyung Il Kim, Chungnam National University; Daejeon Korea
    Sung Woo Bae, Korea Institute of Machinery & Materials; Daejeon Korea
    Young Jin Ahn, Korea Institute of Machinery & Materials; Daejeon Korea
    Presented at ICALEO 2006

    In the solid freeform fabrication (SFF) system using selective laser sintering (SLS), polyamide-12 powder is currently recognized as general material. In this study, som...

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  • ICALEO 2006 Paper #1901 (Dynamic Behaviour of CO2-Laser GMA Hybrid Welding)

    Dynamic Behaviour of CO2-Laser GMA Hybrid Welding
    Authors:
    Claus G Thomy, BIAS Bremer Institut fuer angewandte Strahltechnik GmbH; Bremen Germany
    Frank Vollertsen, BIAS Bremer Institut fuer angewandte Strahltechnik; Bremen Germany
    Presented at ICALEO 2006

    Laser GMA welding has demonstrated its fitness for industrial application in the past few years and is now widely regarded as an appropriate welding process for various applications e.g. in thick-section welding. However, as it is a combination of two welding processes, a wide variety of parameters has to be optimised. Moreover, due to the fact that the specific advantages of hybrid welding arise from the interaction of these two ...

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  • ICALEO 2006 Paper #1902 (Gap Tolerant Joining of Aluminum with Steel Sheets Using the Hybrid Technique)

    Gap Tolerant Joining of Aluminum with Steel Sheets Using the Hybrid Technique
    Authors:
    Frank Vollertsen, BIAS Bremer Institut für angewandte Strahltechnik; Germany
    Michael Kreimeyer, BIAS Bremer Institut für angewandte Strahltechnik; Bremen Germany
    Presented at ICALEO 2006

    Laser joining of dissimilar materials is one of the core competence of BIAS and is of rising interest focussing new design concepts for weight savings in different fields in automotive and aeronautic industry. Beside the development of joining techniques for thin aluminum-steel sheets the joining of thicker material is of rising interest. Therefore specific processes have to be developed which allow dissimila...

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  • ICALEO 2006 Paper #1903 (Production of Sound Deep-Penetration Hybrid Weld in Aluminum Alloy with YAG Laser and MIG Arc)

    Production of Sound Deep-Penetration Hybrid Weld in Aluminum Alloy with YAG Laser and MIG Arc
    Authors:
    Satoru Uchiumi, Osaka University, JWRI; Ibaraki, Osaka Japan
    Seiji Katayama, Osaka University, JWRI; Ibaraki, Osaka Japan
    Francis Briand, Air Liquide; I'Aumone France
    Presented at ICALEO 2006

    Hybrid welding is receiving considerable attention and is used in practical lines. And so YAG laser and MIG arc hybrid welding was performed on aluminum alloy to investigate the effects of various welding conditions on penetration and defect formation. In the case of YAG-MIG (laser-head-leading) hybrid welding, the surfaces of weld beads were by far prettier. The optimum distan...

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  • ICALEO 2006 Paper #1904 (Observation of the Phenomena of CO2 Laser-MAG Hybrid Welding)

    Observation of the Phenomena of CO2 Laser-MAG Hybrid Welding
    Authors:
    Anna Fellman, LUT; Lappeenranta Finland
    Antti Salminen, Lappeenranta University of Technology, Department of Mechanical Engineering, Laser processing laboratory; Lappeenranta Finland
    Presented at ICALEO 2006

    Laser hybrid welding combines laser and arc process to one process that has some advantages over both of the basic processes. The main advantage is the relief to the tolerances of laser welding. When this is combined with the advantages of laser welding, the hybrid welding process becomes an interesting solution for manufacturers of large products for improving their productivity. There have been many differe...

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  • ICALEO 2006 Paper #1905 (Hybrid Laser Welding and Friction Stir Welding Applied to 6056 Aluminium Alloy)

    Hybrid Laser Welding and Friction Stir Welding Applied to 6056 Aluminium Alloy
    Authors:
    Eric Geerinckx, VITO; Mol Belgium
    Jan Gedopt, VITO; Mol Belgium
    Jo Verwimp, VITO; Mol Belgium
    Wim Van Haver, Belgian Welding Institute; Ghent Belgium
    Presented at ICALEO 2006

    Innovative welding processes are continuously gaining industrial interest. Both hybrid laser welding (HLW) and friction stir welding (FSW) are automated welding processes which allow achieving high quality joints in aluminum alloys, in combination with a high productivity. It is important to assess the capability of the processes, not only in terms of weld quality but also in terms of productivity ...

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  • ICALEO 2006 Paper #1906 (Continued Experimental Analysis of Practical Aspects of Hybrid Welding Thick Sections)

    Continued Experimental Analysis of Practical Aspects of Hybrid Welding Thick Sections
    Authors:
    Edward Reutzel, Laser Processing Division, Applied Research Lab, Pennsylvania State University; State College PA USA
    Jay Tressler, Laser Processing Division, Applied Research Lab, Pennsylvania State University; State College PA USA
    Ludwig Kern, Laser Processing Division, Applied Research Lab, Pennsylvania State University; State College PA USA
    Presented at ICALEO 2006

    Laser-Gas Metal Arc (GMA) hybrid welding is fast making the transition from laboratory to production, in industries as diverse as shipbuilding to automobile manufacture. However, many aspects of hybrid laser we...

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  • ICALEO 2006 Paper #1907 (Failure Criteria for Laser and Hybrid Welded Sandwich Panels)

    Failure Criteria for Laser and Hybrid Welded Sandwich Panels
    Authors:
    Kenneth Meinert, Applied Research Laboratory, The Pennsylvania State University; State College PA USA
    Richard Martukanitz, Applied Research Laboratory, The Pennsyvania State University; State College PA USA
    Donald Koss, Dept. of Materials Science and Engineering, The Pennsylvania State University; State College PA USA
    Presented at ICALEO 2006

    Lightweight laser welded structures have been in development for use as structural components for a number of years. Computer models of the structural performance of these materials have been based primarily on the global properties and as yet have not considere...

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