ICALEO 2006 Paper #2004 (Real-Time Prediction of Dilution for Automated Laser Powder Deposition Process)
Real-Time Prediction of Dilution for Automated Laser Powder Deposition Process
Authors:
Alireza Fathi, University of Waterloo; Waterloo ON Canada
Ehsan Toyserkani, University of Waterloo; Waterloo ON Canada
Amir Khajepour, University of Waterloo; Waterloo ON Canada
Presented at ICALEO 2006
This paper presents a mathematical model of laser powder deposition to predict the dilution. The model validated by experiments is developed using the moving heat source method. In this method, the temperature distribution inside the clad and the substrate is obtained using the superposition principle and the solution of the heat diffusion due to a point heat source. The model predic...$28.00
ICALEO 2006 Paper #2003 (Fully Coupled Temperature-Stress Finite Element Analysis for Thermal Stresses in Laser Aided DMD Process)
Fully Coupled Temperature-Stress Finite Element Analysis for Thermal Stresses in Laser Aided DMD Process
Authors:
Joohyun Choi, University of Missouri - Rolla; Rolla MO USA
Suhash Ghosh, UMR; Rolla MO USA
Presented at ICALEO 2006
Despite enormous progress in Laser Aided Direct Metal/Material Deposition (DMD) process many issues concerning the adverse effects of process parameters on the stability of variety of properties and the integrity of microstructure have been reported. Delaminating at substrate-deposition interface and cracking between deposited layers are some of these crucial issues that occur due to excessive stress build-up. Significantly high heating and cooling rates a...$28.00
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...$28.00
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...$28.00
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 ...$28.00
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...$28.00
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...$28.00
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...$28.00
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 ...$28.00
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...$28.00
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