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ICALEO 2007

226 Products.
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ICALEO 2007 Paper #1001 (Technology Development on Dual Beam Laser Lap Welding of Mg Casting Alloys for Automotive Applications)

ICAL07_1001

Technology Development on Dual Beam Laser Lap Welding of Mg Casting Alloys for Automotive Applications
Authors:
Feng Lu, Chrysler LLC; Auburn Hills MI USA
Mariana Forrest, Chrysler LLC; Auburn Hills MI USA
Steve Logan, Chrysler LLC; Auburn Hills MI USA
Presented at ICALEO 2007

Magnesium casting alloys are very appealing materials for automotive applications due to their excellent specific strength (weight reduction), sound damping capability, castability, electromagnetic interference shielding ability and etc. Laser welding is also the desired method of joining these materials, which provides high productivity and structural integrity. However, there is a major chall...

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ICALEO 2007 Paper #1002 (Nd:YAG Laser Welding of 5083 Aluminum Alloy using Filler Wire)

ICAL07_1002

Nd:YAG Laser Welding of 5083 Aluminum Alloy using Filler Wire
Authors:
Antti Salminen, Lappeenranta University of T; Lappeenranta 85 Finland
Stefan Grunenwald, Lappeenranta University of T; Lappeenranta 85 Finland
Veli Kujanp��, Lappeenranta University of Technology; Lappeenranta Finland
Presented at ICALEO 2007

High reflectivity and high thermal conductivity, high vapour pressure of alloying elements as well as low liquid surface tension and low ionisation potential, make laser welding of aluminium and its alloys a demanding task. Problems that occur during welding are mainly
process instabilities of the keyhole and the melt pool, increased plasma formation above the...

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ICALEO 2007 Paper #1003 (Laser Brazing of High Strength Steels)

ICAL07_1003

Laser Brazing of High Strength Steels
Authors:
A. Wirth, BIAS; Germany
C. Thomy, BIAS; Hambergen Germany
H. Laukant, University of Bayreuth; Germany
Frank Vollertsen, BIAS; Germany
U. Glatzel, University of Bayreuth; Germany
Presented at ICALEO 2007

The development of high strength steels demands for joining methods for these new materials. As welding may be difficult for some of these new steels due to a detrimental effect of weld metal and HAZ on the mechanical properties of the joint, brazing of these steels could be a better solution. Therefore, in this paper, laser brazing of high-strength steels is regarded. Besides the brazeabil...

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ICALEO 2007 Paper #1004 (Laser Penetration Brazing of Brass and Low Carbon Steel)

ICAL07_1004

Laser Penetration Brazing of Brass and Low Carbon Steel
Authors:
Kai Chen, Institute of Laser Engineering, Beijing University of Technology,; Beijing Peoples Republic of China
Rongshi Xiao, Institute of Laser Engineering, Beijing University of Technology, ; Beijing Peoples Republic of China
Youdong Pi, Institute of Laser Engineering, Beijing University of Technology, ; Beijing Peoples Republic of China
Peng Dong, Institute of Laser Engineering, Beijing University of Technology,; Beijing Peoples Republic of China
Wuxiong Yang, Institute of Laser Engineering, Beijing University of Technology, ; Beijing Peoples Republic of China
Presented at ICALEO 2007

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ICALEO 2007 Paper #1005 (A Comparison of the Weld Properties Between Laser Welding with and Without Filler Wire of Rolled Mg Sheet for Automobile)

ICAL07_1005

A Comparison of the Weld Properties Between Laser Welding with and Without Filler Wire of Rolled Mg Sheet for Automobile
Authors:
Mok-Young Lee, Rist; Pohang South Korea
Sang-Woon Choi, Posco; Seoul South Korea
Woong-Seong Chang, Rist; Pohang South Korea
Presented at ICALEO 2007

In this study, the welding performance of magnesium alloy was investigated for automobile application. The material was rolled magnesium alloy sheet contains 3wt%Al, 1wt%Zn and Mg balance. The effects of filler wire addition was investigated on 2kW Nd:YAG laser welding. For the results, the mechanical properties of welded specimen were similar with base metal in laser welding with and without f...

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ICALEO 2007 Paper #1006 (Laser Beam Aluminum-Steel Joints – Mechanical and Dynamical Properties and Detailed Microstructural Analysis of Intermetallic FeAl-Phases)

ICAL07_1006

Laser Beam Aluminum-Steel Joints – Mechanical and Dynamical Properties and Detailed Microstructural Analysis of Intermetallic FeAl-Phases
Authors:
Holger Laukant, Metals and Alloys, University of Bayreuth; Bayreuth Germany
Elisa Guimaraens, Metals and Alloys, University of Bayreuth; Bayreuth Germany
Uwe Glatzel, Metals and Alloys, University of Bayreuth; Bayreuth Germany
Presented at ICALEO 2007

Mixed-materials are important in the automotive industry due to their weight saving potential and good ratio between costs and mass production. Aluminium and steel are difficult to join thermally due to the formation of intermetallic phases and differences in thermal expansio...

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ICALEO 2007 Paper #101 (Stress Distributions in Multilayer Laser Deposited Waspaloy Parts using Neutron Diffraction)

ICAL07_101

Stress Distributions in Multilayer Laser Deposited Waspaloy Parts using Neutron Diffraction
Authors:
Andrew Pinkerton, The University of Manchester; Manchester Great Britain
Richard Moat, The University of Manchester; Manchester Great Britain
Darren Hughes, Institut Laue-Langevin; Grenoble Cedex 9 France
Lin Li, The University of Manchester; Manchester Great Britain
Philip Withers, The University of Manchester; Manchester Great Britain
Michael Preuss, The University of Manchester; Manchester Great Britain
Presented at ICALEO 2007

During layered manufacturing of functional metallic parts by laser direct metal deposition (LDMD) resi...

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ICALEO 2007 Paper #102 (PROFIL Project: Direct Manufacturing of Aerospace Components by Laser Cladding and Laser Sintering)

ICAL07_102

PROFIL Project: Direct Manufacturing of Aerospace Components by Laser Cladding and Laser Sintering
Authors:
Christophe Colin, ENSMP; Evry France
Julie Maisonneuve, ENSMP; Paris France
Pascal Aubry, CEA / GERAILP; Arcueil France
Presented at ICALEO 2007

PROFIL. It is a french national project initiated by a large group of industrial partners in the aerospace field (SNECMA moteurs, Dassault Aviation, EADS, Eurocopter, MBDA), two research centers (ENSMP and GERAILP) and one SME (Phénix Systems). The goal of the project is really dual : manufacturing aerospace parts in TA6V or Inconel718, for civil of military applications, by laser cladding of laser sintering. Morevoer, ...

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ICALEO 2007 Paper #103 (Liquation Mechanism Analysis on Laser Deposition on Directionally Solidified Superalloy Blade for Crack-free Rejuvenation)

ICAL07_103

Liquation Mechanism Analysis on Laser Deposition on Directionally Solidified Superalloy Blade for Crack-free Rejuvenation
Authors:
Minlin Zhong, Tsinghua University; Beijing Peoples Republic of China
Wenjin Liu, Tsinghua Univ.; Beijing Peoples Republic of China
Xiaofeng Zhu, Tsinghua University; Beijing Peoples Republic of China
Qian Hao, Tsinghua University; Beijing Peoples Republic of China
Presented at ICALEO 2007

Development of cost-effective repair and rejuvenation processes for Directionally Solidified (DS) Ni-based superalloy blades are of great economic and technological meanings. Laser deposition is a promising rejuvenation candidate for DS blades...

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ICALEO 2007 Paper #104 (Laser Net Shape Manufacturing using an Adaptive Toolpath Deposition Method)

ICAL07_104

Laser Net Shape Manufacturing using an Adaptive Toolpath Deposition Method
Authors:
Huan Qi, GE Global Research; Schenectady NY USA
Magdi Azer, GE Global Research; Niskayuna NY USA
Prabhjot Singh, GE Global Research; Niskayuna NY USA
Presented at ICALEO 2007

Laser net shape manufacturing (LNSM) is a laser cladding based technology which can prototype and repair three-dimensional components with complex geometries. Manufacturing macro-parts with small feature size usually requires a small laser beam and slow deposition rate, which sacrifices the manufacturing speed when one contemplates fabricating entire parts. Depositing materials adaptively according to the geometric...

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ICALEO 2007 Paper #105 (Adaptive Metal Deposition and Data Management for Automated Overhaul of Complex Turbine Components)

ICAL07_105

Adaptive Metal Deposition and Data Management for Automated Overhaul of Complex Turbine Components
Authors:
Claus Bremer, BCT GmbH; USA
Presented at ICALEO 2007

The automated overhaul of turbine components consist of a chain of different processes as inspection, material addition and re-shaping. The direct metal deposition methods have been improved by employing adaptive machining technology. The adaptation algorithms make use of the geometrical information provided by optical scanning systems or in-process measuring equipment and compensate for the part-to-part variation of the turbine components to be overhauled. With this approach, the metal deposition of the individually worn and deformed...

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ICALEO 2007 Paper #106 (Heat Flow and Structural Development during Direct Metal Deposition of Waspaloy Wire using a High Power Diode Laser)

ICAL07_106

Heat Flow and Structural Development during Direct Metal Deposition of Waspaloy Wire using a High Power Diode Laser
Authors:
D Graham McCartney, School of Mechanical, Materials and Manufacturing Engineering; Nottingham Great Britain
Ian R Pashby, School of Mechanical, Materials and Manufacturing Engineering, The University of Nottingham; Nottingham Great Britain
Joel Segal, School of Mechanical, Materials and Manufacturing Engineering; Nottingham Great Britain
Nur Hussein, School of Mechanical, Materials and Manufacturing Engineering, The University of Manchester; Nottingham Great Britain
Presented at ICALEO 2007

Direct metal deposition using a wire fed hi...

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ICALEO 2007 Paper #108 (Acoustic Phenomena during Laser Drilling)

ICAL07_108

Acoustic Phenomena during Laser Drilling
Authors:
Paul Jacobs, LFI Inc.; Smithfield RI USA
Matthew Hayman, LFI Inc.; Smithfield RI USA
Terri Marsico, Connecticut Center for Advanced Technology; East Hartford CT USA
Abby Ilumoka, University of Hartford; West Hartford CT USA
Paul Denney, Conneticut Center for Advance Technology; East Hartford CT USA
Robin Bright, Univeristy of Connecticut; Storrs CT USA
Presented at ICALEO 2007

Precision laser drilled holes are critical to enable film cooling of numerous jet engine components. A single modern jet engine can require nearly one million film cooling holes! At present, laser drilling ...

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ICALEO 2007 Paper #109 (Comparison of Microstructures and Properties of Laser Surface-Treated Thermally Sprayed and Laser-Clad Coatings of Inconel 625)

ICAL07_109

Comparison of Microstructures and Properties of Laser Surface-Treated Thermally Sprayed and Laser-Clad Coatings of Inconel 625
Authors:
Guijun Bi, University of Nottingham; Nottingham Great Britain
K.T. Voisey, University of Nottingham; Nottingham Great Britain
Nauman Ahmed, University of Nottingham; Nottingham Great Britain
D.G. McCartney, University of Nottingham; Nottingham Great Britain
I.R. Pashby, University of Nottingham; Nottingham Great Britain
Presented at ICALEO 2007

Inconel 625 is a corrosion-resistant Ni-based alloy which has multiple applications in various industrial sectors including aerospace and petrochemical. Whilst thermal ...

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ICALEO 2007 Paper #1102 (Computation of Temperature Fields for Laser Transmission Welding of Plastics)

ICAL07_1102

Computation of Temperature Fields for Laser Transmission Welding of Plastics
Authors:
Thomas Frick, Bavarian Laser Centre; Erlangen Germany
Presented at ICALEO 2007

Laser transmission welding of plastics is a joining technique which permits the welding of plastic parts with low thermal and mechanical stresses. In order to compute the temperature fields during the welding process a simulation model of the process is established. Especially the optical and thermal properties of the welded materials are necessary as input parameters in order to model the process properly. While the thermal properties of polymers are well-investigated, there is little knowledge about the optical properties of plast...

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ICALEO 2007 Paper #1105 (New Applications of Laser Welding in the Field of Thermoplastic Polymer Composites)

ICAL07_1105

New Applications of Laser Welding in the Field of Thermoplastic Polymer Composites
Authors:
Stephane Abed, Clfa Fraunhofer Ilt; Evry France
Wolfgang Knapp, Clfa Fraunhofer Ilt; Paris France
Presented at ICALEO 2007

Laser beam welding of thermoplastic polymers offers innovative solutions to overcome limitations of conventional joining technologies. These benefits are used in more and more industrial applications due to the accuracy and flexibility of the process and the quality of the weld seams. To meet industrial requirements specific welding procedures (contour, quasi-simultaneous or simultaneous) or adapted materials (color) have already been developed. In parallel new sectors o...

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ICALEO 2007 Paper #1106 (Laser Heat Sealing of the Polymer Coated Steel Sheet)

ICAL07_1106

Laser Heat Sealing of the Polymer Coated Steel Sheet
Authors:
Tatsuhiko Sakai, Nippon Steel; Futtsu, Chiba Japan
Hirofumi Imai, Nippon Steel; Futtsu, Chiba Japan
Hirokazu Yokoya, Nippon Steel; Futtsu, Chiba Japan
Hiroshi Nishida, Nippon Steel; Futtsu, Chiba Japan
Naoya Hamada, Nippon Steel; Futtsu, Chiba Japan
Presented at ICALEO 2007

The polymer coated thin steel sheet is used for materials for electronics and building applications. At least two steel sheets are joined by tight rolling at their edge for the materials processing. The edge of the steel sheet is needed to be wrapped inside the joint roll and be sufficiently sealed off against th...

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ICALEO 2007 Paper #1201 (The Influence of Pulse Parameters on the Laser Drilling of Hastelloy X)

ICAL07_1201

The Influence of Pulse Parameters on the Laser Drilling of Hastelloy X
Authors:
Paul Jacobs, LFI, Inc.; Smithfield RI USA
Robin Bright, University of Connecticut Institute of Materials Science; Storrs CT USA
Harris Marcus, University of Connecticut Institute of Materials Science; Storrs CT USA
Mark Aindow, University of Connecticut Institute of Materials Science; Storrs CT USA
Presented at ICALEO 2007

Pulsed laser drilling has recently become of increasing importance to the aerospace industry as a method of creating cooling holes in a variety of high temperature gas turbine engine components. The potential for improved processing speed, accuracy, and repr...

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ICALEO 2007 Paper #1202 (Laser Design Characteristics and Parameter Variables and Their Impact on Percussion Hole Quality)

ICAL07_1202

Laser Design Characteristics and Parameter Variables and Their Impact on Percussion Hole Quality
Authors:
Robert Wright, University of Hartford; West Hartford CT USA
Terri Marsico, Conneticut Center for Advance Technology; East Hartford CT USA
Paul Denney, Conneticut Center for Advance Technology; East Hartford CT USA
Presented at ICALEO 2007

Laser drilling is the primary method for the production of cooling holes in gas turbine engine components. Hole quality, which includes surface debris (its amount and location), hole taper, size, and barreling, is a major factor in determining the success of the cooling holes and therefore the performance of the engine. As the n...

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ICALEO 2007 Paper #1203 (Methods of Employing Lasers in the Production and Repair of Cooling Holes used in the Latest Turbine Engine Designs)

ICAL07_1203

Methods of Employing Lasers in the Production and Repair of Cooling Holes used in the Latest Turbine Engine Designs
Authors:
John Stackhouse, Winbro Group Technologies; Coalville Great Britain
Martin Bull, Winbro Group Technologies; Great Britain
Presented at ICALEO 2007

The latest Turbine Cooling Hole designs employ strategies that maximize engine efficiency in ways that were unheard of just a few years ago. These include randomly spaced and angled cooling holes, that often include “fan-shaped” exits to provide efficient, diffused cooling, and Thermal Barrier Coating (TBC) of the component’s surfaces. The challenges that are presented in manufacturing these cooling holes a...

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ICALEO 2007 Paper #1204 (Enhanced Laser Percussion Drilling Modeling Utility)

ICAL07_1204

Enhanced Laser Percussion Drilling Modeling Utility
Authors:
Devdas Shetty, University of Hartford; West Hartford CT USA
Ivana M. Milanovic, University of Hartford; West Hartford CT USA
Tom A. Eppes, University of Hartford; West Hartford CT USA
J. Bornas, University of Hartford; West Hartford CT USA
Presented at ICALEO 2007

The supply chain within the aerospace industry is in the midst of a significant transformation. In decades past, components and assemblies were produced by a few highly vertically integrated companies. Today, the supply chain is disaggregated as components and assemblies are sourced on a global scale from an increasing number of special...

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ICALEO 2007 Paper #1205 (Influence of Incident Angle on Laser Drilling)

ICAL07_1205

Influence of Incident Angle on Laser Drilling
Authors:
Schneider Matthieu, LALP; arcueil France
Laurent Berthe, LALP; ARCUEIL France
Maryse Muller, LALP; ARCUEIL France
Remy Fabbro, LALP; ARCUEIL France
Presented at ICALEO 2007

Laser drilling is able to use as an industrial process for several tens years. However, inherent factors due to laser source, material properties and dynamic of the process are still making physical understanding very difficult. Moreover mistake on measurements can be made with the established diagnostics, especially for deep holes. This paper deals with the study of holes properties drilled by laser with the HL201P from TRUMPF. It ...

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ICALEO 2007 Paper #1206 (New Applications with High Average Power Q-switched Nd:YAG Lasers)

ICAL07_1206

New Applications with High Average Power Q-switched Nd:YAG Lasers
Authors:
Wolfram Rath, Rofin Sinar Laser GmbH; Hamburg Germany
Markus Rütering, Rofin Sinar Laser GmbH; Hamburg Germany
Presented at ICALEO 2007

For many years applications of Q-switched lasers are widely in use like marking, engraving, material removal, drilling cutting etc. The realization of large area processing, however, like cleaning, coating removal and surface modifications is limited for two reasons: First because of the relative low average power of the lasers available so far which can not realize the required processing rates and second because of the limited pulse energy of the available laser sources t...

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ICALEO 2007 Paper #1301 (Simulation of Thermal Stress in Induction-assisted Laser Cladding)

ICAL07_1301

Simulation of Thermal Stress in Induction-assisted Laser Cladding
Authors:
Dietrich Lepski, Fraunhofer IWS Dresden; Dresden Germany
Frank Brückner, Fraunhofer IWS Dresden; Dresden Germany
Eckhard Beyer, Fraunhofer IWS Dresden; TU Dresden LOT / IOF; Dresden Germany
Presented at ICALEO 2007

In laser cladding powder particles of wear and corrosion resistant materials are deposited on the workpiece and melted by the laser beam to get a strong weld joint. High temperature gradients and density changes due to phase transformations arising during cooling are responsible for the evolution of thermal stresses, which even may cause cracks and delamination. This effect becomes m...

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ICALEO 2007 Paper #1304 (Investigation of Meltpool Characteristics and Correlations during Laser Cladding using a Finite Element Modeling Approach)

ICAL07_1304

Investigation of Meltpool Characteristics and Correlations during Laser Cladding using a Finite Element Modeling Approach
Authors:
Johannes Hofman, Netherlands Institute for Metals Research; Enschede Netherlands
D.F. De Lange, University of Twente; Enschede Netherlands
J. Meijer, University of Twente; Enschede Netherlands
Presented at ICALEO 2007

An important goal in the optimization of the laser cladding process is to reduce the degree of dilution. This dilution depends on process settings like scanning speed, laser power and powder mass rate. To optimize process settings width respect to the dilution, usually an expensive series of experiments is performed. Optimal p...

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226 Products.
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