• ICALEO 2013 Paper #1401 (Direct Metal Deposition of Functional Graded Material)

    Direct Metal Deposition of Functional Graded Material
    Authors:
    Armando Yanez, Universidade da Coruna; Ferrol Spain
    Jose M. Amado, Universidade Da CoruñA; Ferrol Spain
    Javier N. Montero, Universidade Da CoruñA; Ferrol Spain
    MaríA J. Tobar, Universidade Da CoruñA; Ferrol Spain
    Presented at ICALEO 2013

    Functional graded materials (FGMs) are a class of composite materials that have a continuous variation of properties from one point to another. FGMs are not new but they could be an approach for eliminating the sharp interface between clad and substrate in the laser cladding process. It is possible to relieve stress concentration appearing in these laminate...

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  • ICALEO 2013 Paper #1402 (Measurement of Particle Density Distribution of Powder Nozzles for Laser Material Deposition)

    Measurement of Particle Density Distribution of Powder Nozzles for Laser Material Deposition
    Authors:
    Stefan Mann, Fraunhofer Institute for Laser Technology ; Aachen Germany
    Leonardo de Melo, Fraunhofer Institute for Laser Technology ILT; Aachen Germany
    Peter Abels, Fraunhofer Institute for Laser Technology ILT; Aachen Germany
    Presented at ICALEO 2013

    The delivery of powder to the melt pool via the nozzle is a crucial element at laser material deposition. It has a major influence on the consumption of powder material and the quality of the coating layer. In order to ensure consistently high process stability and quality, it is necessary to check the powder gas stream a...

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  • ICALEO 2013 Paper #1403 (Multi-Beam Laser Additive Manufacturing)

    Multi-Beam Laser Additive Manufacturing
    Authors:
    Rahul Patwa, Fraunhofer Center for Laser Technology; Plymouth MI USA
    Hans Herfurth, Fraunhofer Center for Laser Technology; Plymouth MI USA
    Josh Chae, University of Michigan; Ann Arbor MI USA
    Jyoti Mazumder, University of Michigan; Ann Arbor MI USA
    Presented at ICALEO 2013

    Today, Laser Additive Manufacturing (LAM) is typically performed using a single beam with power up to multiple-kilowatts. The associated high heat input and limited process control hampers tight manufacturing tolerances and the applicable material spectrum. This paper highlights the development of Multi-Beam LAM technology to alleviate s...

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  • ICALEO 2013 Paper #1404 (Embedding Optical Fibers Into Stainless Steel Using Laser Additive Manufacturing)

    Embedding Optical Fibers Into Stainless Steel Using Laser Additive Manufacturing
    Authors:
    Dirk Havermann, Heriot-Watt University; Edinburgh USA
    William N. Macpherson, Heriot-Watt University; Edinburgh Great Britain
    Robert R.J. Maier, Heriot-Watt University; Edinburgh Great Britain
    Duncan P. Hand, Heriot-Watt University; Edinburgh Great Britain
    Presented at ICALEO 2013

    Laser Additive Manufacturing provides novel and exciting possibilities when constructing 3-dimensional free form components in polymers and metals. The process of building 3-D components from the inside-out, opens up the possibility of embedding sensors directly into the heart of a component...

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  • ICALEO 2013 Paper #1405 (Automated Laser Metal Deposition Welding in the Field of Tool and Mould Making)

    Automated Laser Metal Deposition Welding in the Field of Tool and Mould Making
    Authors:
    Markus Franz, University of Applied Sciences Jena; Jena Germany
    Conrad Haupt, University of Applied Sciences Jena; Jena Germany
    Jens Bliedtner, University of Applied Sciences Jena; Jena Germany
    Jean Pierre Bergmann, Tu Ilmenau; Ilmenau Germany
    Presented at ICALEO 2013

    Throughout this scientific work examinations on an automated process chain for laser metal deposition (LMD) welding of metallic functional layers on a submatrix are carried out. First tests on metal sheets are made with a disc laser and a laser metal deposition -packet. The developed process chain ranges f...

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  • ICALEO 2013 Paper #1406 (Direct Metal Deposition of Titanium Matrix Composites: Optimization of the Process and Microstructural Analysis)

    Direct Metal Deposition of Titanium Matrix Composites: Optimization of the Process and Microstructural Analysis
    Authors:
    Sebastien Pouzet, laboratoire PIMM; PARIS USA
    Patrice Peyre, Laboratoire PIMM; Paris France
    O. Castelnau, Laboratoire PIMM; Paris France
    C. Gorny, Laboratoire PIMM; Paris France
    C. Colin, Centre des Materiaux; Evry France
    Presented at ICALEO 2013

    Titanium matrix composites (TMC's) are attractive materials for aeronautical applications because of their superior mechanical performance at high temperature combined to their low density. The direct metal deposition (DMD) laser technique appears to be a flexible technique for gene...

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  • ICALEO 2013 Paper #1502 (Laser Micro Welding of Aluminum with the Superposition of a Pulsed Diode Laser and a Pulsed Nd:Yag Laser)

    Laser Micro Welding of Aluminum with the Superposition of a Pulsed Diode Laser and a Pulsed Nd:Yag Laser
    Authors:
    Philipp von Witzendorff, Laser Zentrum Hannover e.V.; Hannover Germany
    Lorenz Gehrmann, Laser Zentrum Hannover E.V.; Hannover Germany
    Stefan Kaierle, Laser Zentrum Hannover E.V.; Hannover Germany
    Ludger Overmeyer, Laser Zentrum Hannover E.V.; Hannover Germany
    Martin Bielenin, Ilmenau University of Technology; Ilmenau Germany
    Jean Pierre Bergmann, Ilmenau University of Technology; Ilmenau Germany
    Presented at ICALEO 2013

    Pulsed laser welding with Nd:YAG lasers is applied for welding of thin aluminum sheets when the heat...

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  • ICALEO 2013 Paper #1503 (Analysis of Laser Welding of Different Aluminum Alloys)

    Analysis of Laser Welding of Different Aluminum Alloys
    Authors:
    Dirk Frederik De Lange, Universidad Autónoma de San Luis Potosí, Facultad de Ingenieria; San Luis Potosi Mexico
    Osbaldo Galicia Gutierrez, Universidad AutóNoma De San Luis Potosí, Facultad De IngenieríA, Ciep; San Luis Potosí Mexico
    Ricardo Romero -Mendez, Universidad AutóNoma De San Luis Potosí, Facultad De IngenieríA, Ciep; San Luis Potosí Mexico
    Bernard J. Aalderink, Demcon; Enschede Netherlands
    Presented at ICALEO 2013

    When comparing the laser welding of near to pure aluminum (AA1050) and different aluminum alloys (AA5182 and AA7075), significant differences can be found in the p...

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  • ICALEO 2013 Paper #1505 (Effects of Dual-Beam Laser Welding and Pulse Shaping on Cracking Susceptibility of Aa 5754 Aluminum)

    Effects of Dual-Beam Laser Welding and Pulse Shaping on Cracking Susceptibility of Aa 5754 Aluminum
    Authors:
    Martin Stambke, Ilmenau University of Technology; Ilmenau Germany
    Jean Pierre Bergmann, Ilmenau University of Technology; Ilmenau Germany
    Martin Bielenin, Ilmenau University of Technology; Ilmenau Germany
    Philipp von Witzendorff, Laser Zentrum Hannover e.V.; Hannover Germany
    Presented at ICALEO 2013

    Aluminum alloys show a high tendency to the formation of hot cracks during pulsed laser welding, which can be attributed to relatively high thermal expansions, its large change in volume during solidification and its wide solidification temperature range...

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  • ICALEO 2013 Paper #1506 (Multi-Pass-Narrow-Gap-Laser Beam-Welding of Hot Crack Sensitive Thick Aluminum Plates)

    Multi-Pass-Narrow-Gap-Laser Beam-Welding of Hot Crack Sensitive Thick Aluminum Plates
    Authors:
    Renald Schedewy, Fraunhofer Institute for Material and Beam Technology; Dresden Germany
    Berndt Brenner, Fraunhofer Institute for Material and Beam Technology; Dresden
    Dirk Dittrich, Fraunhofer Institute for Material and Beam Technology; Dresden Germany
    Eckhard Beyer, Fraunhofer Institute for Material and Beam Technology, University of Technology Dresden; Dresden Germany
    Presented at ICALEO 2013

    Heat treatable aluminum alloys are one of the most important materials for light weight constructions of the modern economy. They combine very high specific strength and...

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