ICALEO 2009 Paper #M1003 (Visualization of Grain Boundaries by Nanosecond Laser Irradiation for Controlling Microstructures of Metals)
Visualization of Grain Boundaries by Nanosecond Laser Irradiation for Controlling Microstructures of Metals
Authors:
Masahiro Tsukamoto, Joining and Welding Research Institute; Ibaraki, Osaka Japan
Saburo Yagi, Graduate School of Osaka Univ.; Suita, Osaka Japan
Toshiya Shibayanagi, Joining and Welding Research Institute; Ibaraki, Osaka Japan
Masayuki Fujita, Institute for Laser Technology; Suita, Osaka Japan
Nobuyuki Abe, Joining and Welding Research Institute; Ibaraki, Osaka Japan
Presented at ICALEO 2009
Fiber laser spot heating for controlling microstructures is an important technology for production of new functional materials. Function of...$28.00
ICALEO 2009 Paper #M1002 (Self Organized Pattern Induced using Nanosecond Pulsed Laser Processing of Titanium Immersed in Hydrogen Peroxide)
Self Organized Pattern Induced using Nanosecond Pulsed Laser Processing of Titanium Immersed in Hydrogen Peroxide
Authors:
Negar Rasti, University of Waterloo; Waterloo ON Canada
Ehsan Toyserkani, University of Waterloo; Waterloo ON Canada
Presented at ICALEO 2009
Nanosecond pulsed Ytterbium fiber laser with the polarized Gaussian beam, is utilized to form the organized periodic microstructures on the titanium surface in two different medium: air, and hydrogen peroxide (HP). SEM and profilometry analyses are used to compare the structures developed in air and hydrogen peroxide. Immersing the sample in the hydrogen peroxide medium changes the periodic space and the height of the mic...$28.00
ICALEO 2009 Paper #M1001 (Electrode Ablation On Piezoelectric Ceramics by ns-Pulsed Laser Ablation For Sensing Applications)
Electrode Ablation On Piezoelectric Ceramics by ns-Pulsed Laser Ablation For Sensing Applications
Authors:
Stephan Kloss, Renishaw Plc.; Edinburgh Great Britain
Rhodri W.C. Lewis, University of Bath; Bath Great Britain
Andrew Dent, University of Bath; Bath Great Britain
Nick Weston, Renishaw Plc.; Edinburgh Great Britain
Kevyn Jonas, Renishaw Plc.; Wotton-Under-Edge, Gloucestershire Great Britain
Christopher R. Bowen, University of Bath; Bath Great Britain
Duncan P. Hand, Heriot Watt University; Edinburgh Great Britain
Jonathan D. Shephard, Heriot Watt University; Edinburgh Great Britain
Presented at ICALEO 2009$28.00
ICALEO 2009 Paper #C205 (Ultra Short Pulse Laser Generated Surface Textures for Anti-Ice Applications in Aviation)
Ultra Short Pulse Laser Generated Surface Textures for Anti-Ice Applications in Aviation
Authors:
Gert-willem Romer, University of Twente; Enschede Netherlands
Daniel Arnaldo Del Cerro, University of Twente; Enschede Netherlands
R.C.J. Sipkema, Lightmotif B.V.; Enschede` Netherlands
M.N.W. Groenendijk, Lightmotif B.V.; Enschede Netherlands
A.J. Huis in 't Veld, University of Twente; Enschede Netherlands
Presented at ICALEO 2009
By laser ablation with ultra short laser pulses in the pico- and femto-second range, well controlled superimposed micro- and nano-scaled surface textures can be obtained. The micro-scale of the texture is mainly determi...$28.00
ICALEO 2009 Paper #C204 (Advanced Beam Steering in Helical Drilling)
Advanced Beam Steering in Helical Drilling
Authors:
Henrikki Pantsar, Fraunhofer Usa, Inc.; Plymouth MI USA
Petri Laakso, Vtt Technical Research Centre of Finland; Lappeenranta Finland
Mika Aikio, Vtt Technical Research Centre of Finland; Oulu Finland
Jouni Huopana, Vtt Technical Research Centre of Finland; Oulu Finland
Hans Herfurth, Fraunhofer Usa, Inc.; Plymouth MI USA
Stefan Heinemann, Fraunhofer Usa, Inc.; Plymouth MI USA
Presented at ICALEO 2009
Helical laser drilling is a method for producing high quality holes with defined geometries in different materials among industries such as aerospace, medical device manufacturing an...$28.00
ICALEO 2009 Paper #C203 (Dual Mode High Brightness Fiber Laser for Ablation and Drilling of Aerospace Superalloys)
Dual Mode High Brightness Fiber Laser for Ablation and Drilling of Aerospace Superalloys
Authors:
Mohammed Naeem, GSI Group, Inc. - Laser Division; Rugby Great Britain
Steve Keen, -; -
Presented at ICALEO 2009
Aerospace gas turbines require a large number of small diameter holes (<1mm) to provide cooling in the turbine blades, nozzle guide vanes, combustion chambers and afterburner. Many thousands of holes are introduced in the surface of these components to allow a film of cooling air to flow over the component. Film cooling both extends the life of the component and enables extra performance to be achieved from the engine. A typical modern engine will have ~ 100,000 such holes....$28.00
ICALEO 2009 Paper #C202 (Picosecond Laser Machining of Shaped Holes in Thermal Barrier Coated Turbine Blades)
Picosecond Laser Machining of Shaped Holes in Thermal Barrier Coated Turbine Blades
Authors:
Carl Druffner, Mound Laser & Photonics Center, Inc.; Miamisburg OH USA
Larry Dosser, Mound Laser & Photonics Center, Inc.; Miamisburg OH USA
William Roquemore, Air Force Research Laboratory; Wright-Patterson Afb OH USA
Sivaram Gogineni, Spectral Energies, LLC; Dayton OH USA
Presented at ICALEO 2009
Increasing the operating temperature of an aircraft engine has the benefit of increasing thrust and fuel efficiency. Maximizing the operating temperature necessitates the addition of Thermal Barrier Coatings (TBC) and the machining of cooling holes and air flow channels...$28.00
ICALEO 2009 Paper #906 (Laser Pulse Influence on Spreading of AlSI12-Solder During Flux-less Laser Brazing of Aluminum)
Laser Pulse Influence on Spreading of AlSI12-Solder During Flux-less Laser Brazing of Aluminum
Authors:
Dmitri Donst, Fraunhofer IPT; Aachen Germany
Andreas Janssen, Fraunhofer I P T; Aachen Germany
Markus Niessen, Fraunhofer I L T; Aachen Germany
Fritz Klocke, Fraunhofer I P T; Aachen Germany
Presented at ICALEO 2009
Market and technology driven developments on aluminum light weight constructions require suitable joining techniques. Laser brazing of aluminum alloys is an appropriate technique that offers economical and technological advantage. However, the natural oxide layer on the surface of the aluminum alloys inhibits the wetting and so constrains the...$28.00
ICALEO 2009 Paper #905 (Systematic Development of Safe High Performance Laser Applications - Knowing the Limits of Conventional Systems)
Systematic Development of Safe High Performance Laser Applications - Knowing the Limits of Conventional Systems
Authors:
Stefan Braunreuther, Iwb Institute for Machine Tools and Industrial Management; Garching Germany
Sonja Huber, Iwb Institute for Machine Tools and Industrial Management; Garching Germany
Florian Oefele, Iwb Institute for Machine Tools and Industrial Management; Garching Germany
A. Trautmann, -; -
Michael F. Zaeh, Iwb, Institut for Machine Tools and Industrial Management; Garching Germany
Presented at ICALEO 2009
The advent of modern laser beam sources, like fiber- and disk laser beam sources, led to laser applications for ec...$28.00
ICALEO 2009 Paper #904 (On-Line Quality Control System for Laser Brazing)
On-Line Quality Control System for Laser Brazing
Authors:
Dmitri Donst, Fraunhofer I P T; Aachen Germany
Peter Abels, Fraunhofer I L T; Aachen Germany
Michael Ungers, -; -
Fritz Klocke, Fraunhofer I P T; Aachen Germany
Stefan Kaierle, -; -
Presented at ICALEO 2009
The laser brazing of steel with copper solder is widely established in industrial manufacturing. The reason are process advantages as a low working temperature and thus the low thermal distortion. In addition, the quality of the joint regarding surface appearance, joint strength and impermeability are fully ensured. The major obstacle for a wide industrial spreading of laser brazi...$28.00
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