• ICALEO 2006 Paper #206 (Development of a Laser Assisted Material Spray Process)

    Development of a Laser Assisted Material Spray Process
    Authors:
    Matthew Bray, Cambridge University; Cambridge Great Britain
    Steven Celotto, Cambridge University; Cambridge Great Britain
    William O'Neill, Cambridge University; Cambridge Great Britain
    Presented at ICALEO 2006

    Metal coating and cladding techniques employ high temperatures to melt the metal particles which can undermine the integrity and stability of the resulting deposit material and substrate. This paper introduces a new process for the deposition of metallic coatings in the solid state using a supersonic particle stream in conjunction with laser energy input, named Laser Assisted Material Spray, LAMS. Th...

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  • ICALEO 2006 Paper #208 (Crack Behavior and Characteristics of Laser Clad Layer with Powder Mixture of Co-Based Alloy and WC)

    Crack Behavior and Characteristics of Laser Clad Layer with Powder Mixture of Co-Based Alloy and WC
    Authors:
    Guojian Xu, Nagoya University (Present: LASER X CO. LTD. Chiryu, Japan); Nagoya Japan
    Liquan SUN, Chang Chun Institute of Technology; Chang Chun Peoples Republic of China
    Muneharu KUTSUNA, Graduate School of Engineering, Nagoya University; Nagoya Japan
    Zhongjie Liu, Nagoya University; Nagoya Japan
    Presented at ICALEO 2006

    The powder mixture of Co-based alloy (Stellite-6) and tungsten carbide (WC) in the range of 0wt% ~ 47wt%WC were deposited on mild steel (JIS-SM400B) plates by a 2.4kW cw CO2 laser. The influence of a preheating temperature, WC weig...

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  • ICALEO 2006 Paper #301 (Microstructure and Mechanical Properties of Laser Net Shape Manufactured Inconel 718 and Ti-6Al-6V Components)

    Microstructure and Mechanical Properties of Laser Net Shape Manufactured Inconel 718 and Ti-6Al-6V Components
    Authors:
    Huan Qi, GE Global Research Center; Schenectady NY USA
    Yong Liu, GE Global Research Center Shanghai; ShangHai Peoples Republic of China
    Magdi Azer, GE Global Research; Niskayuna NY USA
    xiaoping Huang, GE Global Research Center Shanghai; ShangHai Peoples Republic of China
    Yanmin Li, GE Global Research Center Shanghai; Shanghai Peoples Republic of China
    Carl Erikson, GE Global Research Center; Niskayuan NY USA
    Presented at ICALEO 2006

    Laser net shape manufacturing (LNSM) is a laser cladding based technology which ca...

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  • ICALEO 2006 Paper #302 (Diode Laser Metal Deposition: The Effect of Pulsed Beam Parameters on Superalloy Microstructure and Deposit Morphology)

    Diode Laser Metal Deposition: The Effect of Pulsed Beam Parameters on Superalloy Microstructure and Deposit Morphology
    Authors:
    Andrew Pinkerton, Univ. of Manchester; Manchester Great Britain
    Michael Preuss, The University of Manchester; Manchester Great Britain
    Richard Moat, The University of Manchester; Manchester Great Britain
    Lin Li, The University of Manchester; Manchester Great Britain
    Philip Withers, The University of Manchester; Manchester Great Britain
    Presented at ICALEO 2006

    This work describes a study of laser direct metal deposition (LDMD), using a diode laser in pulsed (discontinuous beam) mode and a coaxial powder nozzle. An exp...

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  • ICALEO 2006 Paper #303 (Results on Laser Direct Manufacturing of Graded Materials)

    Results on Laser Direct Manufacturing of Graded Materials
    Authors:
    Chedly Braham, ENSAM; Paris France
    Pascal Aubry, GERAILP; Arcueil France
    Patrice Peyre, GERAILP; Arcueil France
    Rémy Fabbro, GERAILP ; Arcueil France
    Presented at ICALEO 2006

    This article presents investigations carried out on the generation of Inconel718-TA6V graded structures by laser cladding. First, we introduce the global context of the project in term of challenge and environment. The study is decomposed into to main tasks : the development of the specific procedure for ensuring a sound TA6V-Inco718 transition, and numerical simulations that will predict information on the thermal...

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  • ICALEO 2006 Paper #304 (Study of Porosity Formation during Laser Welding of Ti6Al4V)

    Study of Porosity Formation during Laser Welding of Ti6Al4V
    Authors:
    Eric Stiles, Fraunhofer USA, Center for Coatings & Laser Applications; Plymouth MI USA
    Konrad Bartkowiak, Fraunhofer USA, Center for Coatings and Laser Applications; Plymouth MI USA
    Ralph Dienemann, Fraunhofer USA, Center for Coatings and Laser Applications; Plymouth MI USA
    Steffen Mueller, Fraunhofer USA, Center for Coatings and Laser Applications; Plymouth MI USA
    Presented at ICALEO 2006

    Laser welding is increasingly being looked at by the aerospace industry as a process for making titanium alloy structural components, due to the reduced material usage vs. machining to shape from large ...

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  • ICALEO 2006 Paper #305 (Repair Opportunites for Aerospace Components through Laser Powder Deposition)

    Repair Opportunites for Aerospace Components through Laser Powder Deposition
    Authors:
    James Sears, South Dakota School of Mines & Technology; Rapid City SD USA
    Aaron Costello, South Dakota School of Mines & Technology; Rapid City SD USA
    Presented at ICALEO 2006

    Laser Powder Deposition (LPD) for component repair and manufacturing offers some unique solutions for Aerospace applications. LPD is a CAD/CAM solid freeform fabrication technology that uses metal powder and laser fusion for repairing or manufacturing of components. Inherent to LPD is the ability to add material for repair or manufacture of critical GTE components with minimal heat affect to the under lying material. Also, d...

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  • ICALEO 2006 Paper #306 (Beneficial Pre-Stress in Laser Fabricated, Metallic, Square, Cellular Sandwich Panels)

    Beneficial Pre-Stress in Laser Fabricated, Metallic, Square, Cellular Sandwich Panels
    Authors:
    Eduard Ventsel, Engineering Science & Mechanics Department, The Pennsylvania State University; State College PA USA
    Peter Vigna, Engineering Science & Mechanics Department, The Pennsylvania State University; State College PA USA
    Stephen Copley, ARL, The Pennsylvania State University; State College PA USA
    Presented at ICALEO 2006

    The fabrication of flat, lightweight, stiff, strong, metallic, square cellular sandwich panels, LASCELLTM (Patent Pending), employing laser cutting and stake welding has been applied to the fabrication of large, watertight door panels and frames in a ...

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  • ICALEO 2006 Paper #308 (Laser Percussion Drilling of Aerospace Material)

    Laser Percussion Drilling of Aerospace Material
    Authors:
    Mohammed Naeem, GSI Group, Inc.; Rugby Great Britain
    Presented at ICALEO 2006

    Aerospace gas turbines require large number small diameter holes (

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  • ICALEO 2006 Paper #309 (Drilling Routine for Estimating, Analyzing and Modeling of Laser Processing)

    Drilling Routine for Estimating, Analyzing and Modeling of Laser Processing
    Authors:
    Devdas Shetty, University of Hartford; West Hartford CT USA
    Ivana Milanovic, University of Hartford; West Hartford CT USA
    Tom Eppes, University of Hartford; West Hartford CT USA
    Jason Bornas, University of Hartford; West Hartford CT USA
    Presented at ICALEO 2006

    Nd:YAG laser percussion drilling is used extensively in the aerospace industry to produce cooling holes in turbine engine components. A variety of theoretical models have been developed to predict the outcome of the drilling process. Several models show good agreement with experimental results regarding hole geometr...

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