ICALEO 2009 Paper #1704 (Oxide Formation in Acute Laser Percussion Drilled Holes in Single Crystal Nickel Superalloy)
Oxide Formation in Acute Laser Percussion Drilled Holes in Single Crystal Nickel Superalloy
Authors:
Stephen Leigh, Manchester University; Manchester Great Britain
Kursad Sezer, Manchester University; Manchester Great Britain
Lin Li, Manchester University; Manchester Great Britain
Andrew Pinkerton, -; -
Clive Grafton-Reed, Rolls-Royce Plc; Derby Great Britain
Martyn Cuttell, Rolls-Royce Plc; Derby Great Britain
Presented at ICALEO 2009
One industrial application of laser drilling is the production of cooling holes at acute angles in nickel superalloy single crystal material. However laser drilled holes are inherently associated ...$28.00
ICALEO 2009 Paper #1703 (Spectroscopic Study of Inconel 718 Plasma Generated during Laser Drilling Process)
Spectroscopic Study of Inconel 718 Plasma Generated during Laser Drilling Process
Authors:
Joonghan Shin, CLAIM, The University of Michigan; Ann Arbor MI USA
Jyoti Mazumder, -; -
Presented at ICALEO 2009
An aero space material, Inconel 718, was laser drilled with a diode pumped solid state Nd:YAG laser. During the laser drilling process, the emission spectra of the Inconel 718 plasma have been recorded and analyzed using an optical emission spectroscopic method. After the process, the drilling depth of the holes produced at various conditions was measured by optical microscope. Temporal histories of the emission line intensity and drilling depth were obtained. The correlation, pre...$28.00
ICALEO 2009 Paper #1702 (Laser Drilling in Percussion Regime: Study of the Scale Time of the Breakthrough)
Laser Drilling in Percussion Regime: Study of the Scale Time of the Breakthrough
Authors:
Laurent Berthe, Laboratoire pour l'Application des lasers de Puissance (UPR CNRS 1578); Arcueil France
Maryse Muller, Pimm/Cnrs; Paris France
Matthieu Schneider, Pimm/Cnrs; Paris France
Mariette Nivard, Pimm/Cnrs; Paris France
Presented at ICALEO 2009
The laser drilling in percussion regime consists in irradiating a target with a laser in the power density range of 10 MW/cm2 and pulse duration in ms range . The beam and the target are static. The material is heated, melted and vaporized. The drilling is produced by the removal of the liquid layer using recoil pressure...$28.00
ICALEO 2009 Paper #1607 (Spectral Analysis of the Process Emission during Laser Welding of AISI 304 Stainless Steel with Disk and Nd:YAG Laser)
Spectral Analysis of the Process Emission during Laser Welding of AISI 304 Stainless Steel with Disk and Nd:YAG Laser
Authors:
Ali Riza Konuk, University of Twente; Enschede Netherlands
Ronald Aarts, University of Twente; Enschede Netherlands
Bert Huis in't Veld, University of Twente; Enschede Netherlands
Presented at ICALEO 2009
Optical emissions from the laser welding process can be obtained relatively easy in real-time. Therefore it is very beneficial to establish a clear relation between characteristics of these
emissions and the resulting weld quality or the occurrence of welding defects for any of the laser types currently applied in industry. Most commonly use...$28.00
ICALEO 2009 Paper #1607 (A Study About Suitability of Different Welding Processes for the Production of Aluminum Stiffeners for Ship Structure)
A Study About Suitability of Different Welding Processes for the Production of Aluminum Stiffeners for Ship Structure
Authors:
Antti Salminen, Lappeenranta University of Technology; Lappeenranta Finland
Tuomas Purtonen, Lut; Lappeenranta Finland
Jussi Tolvanen, Innova; Laitila Finland
Juho Isotalus, Innova; Laitila Finland
Presented at ICALEO 2009
Laser welding has a growing role in manufacturing technology. Keyhole laser welding and laser hybrid welding processes provide good opportunity to weld metallic structures in an efficient way. The most important advantages of laser welding stem from considerable potential gained to product design like low distort...$28.00
ICALEO 2009 Paper #1605 (Welding of Thick Stainless Steels Plates Up to 50MM with High Brightness Lasers)
Welding of Thick Stainless Steels Plates Up to 50MM with High Brightness Lasers
Authors:
Xudong Zhang, Hitachi Ltd.; Hitachi-shi, Ibaraki-ken Japan
Eiji Ashida, Hitachi, Ltd.; Hitachi-Shi, Ibaraki-Ken Japan
Shoh Tarasawa, Hitachi-Ge Nuclear Energy, Ltd.; Hitachi-Shi, Ibaraki-Ken Japan
Yusuke Anma, Hitachi-Ge Nuclear Energy, Ltd.; Hitachi-Shi, Ibaraki-Ken Japan
Masaya Okada, Hitachi-Ge Nuclear Energy, Ltd.; Hitachi-Shi, Ibaraki-Ken Japan
Seiji Katayama, Osaka University; Osaka Japan
Masami Mizutani, Osaka University; Osaka Japan
Presented at ICALEO 2009
Thick-section stainless steels are widely used in components and s...$28.00
ICALEO 2009 Paper #1604 (Laser Absorption in CO2 Laser Welding of Medium, High and Ultra High Strength Steels)
Laser Absorption in CO2 Laser Welding of Medium, High and Ultra High Strength Steels
Authors:
Azim Ahmad, Lappeenranta University of Technology; Lappeenranta Finland
Veli Kujanpää, Lappeenranta University of Technology; Lappeenranta Finland
Presented at ICALEO 2009
Absorption varies quite a lot in laser welding. Accurate measurement of absorption in laser welding is also a challenging problem. Usually a calorimeter is commonly employed for measuring absorption. In this paper an alternative approach is presented for measuring absorption in laser welding of lean duplex LDX2101 and austenitic stainless steels of type 301 LN and 316 L based on the temperature distribution in the heat...$28.00
ICALEO 2009 Paper #1603 (Simulation Of Thin Metal Deformation By Laser Welding)
Simulation Of Thin Metal Deformation By Laser Welding
Authors:
Takeji Arai, Chuo University; Tokyo Japan
Noritaka Asano, -; -
Presented at ICALEO 2009
The thermal deformation of the metal is very important factor for the laser welding technology. For a highly accurate welding with sheet metal by the laser, it is necessary to understand the distortion caused by laser processing to a highly accurate welding. At the first, to clarify the deformation values quantitatively when the laser welding of sheet metal, bead on plate by the moving heat source with continuous wave oscillations on the plate was done. It is considered the standard to know the deformation of laser welding. By using...$28.00
ICALEO 2009 Paper #1601 (Laser Beam Welding of Dissimilar Materials (Invited Presentation, 20 minutes))
Laser Beam Welding of Dissimilar Materials (Invited Presentation, 20 minutes)
Authors:
Rongshi Xiao, Beijing University of Technology; Beijing Peoples Republic of China
Peng Dong, Beijing University of Technology; Beijing Peoples Republic of China
Kai Chen, Beijing University of Technology; Beijing Peoples Republic of China
Presented at ICALEO 2009
In the modern industrial fields, there is a tendency that more and more parts or structures are compositely made of dissimilar materials, which offers challenges to the joining technology. In this paper, a review of laser beam welding of some dissimilar materials is presented based on the research of the authors group. Th...$28.00
ICALEO 2009 Paper #1505 (The Control of Grain Size during Welding and Direct Metal Deposition using Three Dimensional Time-temperature Control Provided by Holographic Beam Shaping)
The Control of Grain Size during Welding and Direct Metal Deposition using Three Dimensional Time-temperature Control Provided by Holographic Beam Shaping
Authors:
Matthew Gibson, Loughborough University; Loughborough Great Britain
Rebecca Higginson, Loughborough University; Loughborough Great Britain
John Tyrer, Loughborough University; Loughborough Great Britain
Matthew Blackmur, -; -
Presented at ICALEO 2009
When the laser beam is scanned a temperature profile is induced in the workpiece. The temperature distribution will be a function of the beam shape and intensity profile. The use of a circular beam leads to an uneven temperature distribution even w...$28.00
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