ICALEO 2006 Paper #1305 (High Average Power, Low Non-linearity Ytterbium Fiber Amplifier using Spectral Compression)
High Average Power, Low Non-linearity Ytterbium Fiber Amplifier using Spectral Compression
Authors:
Yoann Zaouter, Amplitude Systemes; Pessac France
Eric Cormier, University of Bordeaux; Talence France
Pierre Rigail, Amplitude Systemes; Pessac France
Clemens Hoenninger, Amplitude Systemes; Pessac France
Eric Mottay, Amplitude Systemes; Pessac France
Presented at ICALEO 2006
High precision applications, such as micro and nano-machining, waveguide writing, nano-structuring require both moderate energy level, and high average power. We present a high average power fibre amplifier. We report on a Ytterbium doped fiber-based amplifier, delivering u...$28.00
ICALEO 2006 Paper #1302 (High Speed Fiber Laser Welding for Fuel Cell Components)
High Speed Fiber Laser Welding for Fuel Cell Components
Authors:
Stanley Ream, EWI; Columbus OH USA
Presented at ICALEO 2006
As energy independence becomes a more pressing concern in the U.S. and other countries, industry and government fuel cell development efforts have gained momentum. There are several leading fuel cell types and hundreds of specific fuel cell designs. Yet, despite the design diversity, there is a common theme that appears in many systems, specifically the need to join, seal, and/or weld thin, stainless steel components at very high production rates. Fuel cell system components such as bi-polar plates, fuel processors, recuperators, and heat exchangers are all comprised o...$28.00
ICALEO 2006 Paper #1301 (Applications Review: Materials Processing with Fiber Lasers under 1KW)
Applications Review: Materials Processing with Fiber Lasers under 1KW
Authors:
Vijay Kancharla, IPG Photonics Corporation; Oxford MA USA
Presented at ICALEO 2006
Fiber lasers have been gaining ground rapidly in the recent years for material processing applications. A host of applications currently employed with other laser technologies have shifted focus to this very fast emerging technology. While the technology is being familiarized and accepted in the industry, there is limited data and summary of industrial applications of fiber lasers. In this review, an outline of numerous such applications with ytterbium lasers under 1KW is discussed and case studies are presented. Applications and laser...$28.00
ICALEO 2006 Paper #1206 (Laser Consolidation of Net-Shape Shells for Flextensional Sonar Projectors)
Laser Consolidation of Net-Shape Shells for Flextensional Sonar Projectors
Authors:
Lijue Xue, National Research Council Canada; London Ontario Canada
Chris Purcell, Defence Research and Development Canada- Atlantic; Dartmouth NS Canada
Presented at ICALEO 2006
Laser consolidation (LC) is a computer-aided manufacturing process that builds a functional net-shape part directly from a CAD model, without the use of moulds or dies. The folded shell projector (FSP) is a compact flextensional underwater sound projector developed by DRDC-Atlantic for low frequency sonar applications. The radiating surface of the FSP is a thin-walled shell of complex shape that challenges conventional manuf...$28.00
ICALEO 2006 Paper #1205 (Qualification of Nd:YAG Laser Direct Metal Deposition Techniques for Repair of Nickel Superalloy Components)
Qualification of Nd:YAG Laser Direct Metal Deposition Techniques for Repair of Nickel Superalloy Components
Authors:
A A Lugan, TWI Ltd; Cambridge Great Britain
C Rinaldi, CESI RICERCA SpA; Milano Italy
G B Melton, TWI Ltd; Cambridge Great Britain
Paul Hilton, TWI Ltd.; Great Abington, Cambridge Great Britain
Presented at ICALEO 2006
The high temperature operating components of power utility gas turbines are often made with gamma prime reinforced nickel based superalloys. As a result, there is a very high cost ascociated with the replacement of any parts damaged during service. The economic benefits to be gained by using repair procedures as opposed to rep...$28.00
ICALEO 2006 Paper #1204 (Absorption Coefficient Characterization in Ti-6Al-4V Laser Additive Manufacturing)
Absorption Coefficient Characterization in Ti-6Al-4V Laser Additive Manufacturing
Authors:
Anil Chaudhary, Applied Optimization, Inc.; Dayton OH USA
Matt Keller, Applied Optimization, Inc.; Dayton OH USA
Shawn Kelly, Laser Processing Division, ARL; State College, PA PA USA
Steven Medeiros, Wright Patterson AFB; Dayton OH USA
Presented at ICALEO 2006
In order to accurately model the laser deposition of Ti-6Al-4V aerospace components, the interaction of the laser and metal powder feedstock has been investigated. One of the key modeling parameters, the absorption coefficient of the material, is often unknown for material in powder form. It has been shown tha...$28.00
ICALEO 2006 Paper #1203 (Direct Manufacturing of Aeronautical Components by Laser Metal Deposition of TI-6AI-4V)
Direct Manufacturing of Aeronautical Components by Laser Metal Deposition of TI-6AI-4V
Authors:
Julie Maisonneuve, Centre des Materiaux - Ecole des Mines de Paris; EVRY France
Bienvenu Yves, Centre des Materiaux; Evry France
Christophe Colin, Centre des Materiaux; Evry France
Aubry Pascal, GIP-Gerailp; Arcueil France
Presented at ICALEO 2006
Profil project concerns direct manufacturing by two additive processes which are laser metal deposition and selective laser sintering. The involved partners are the GIFAS group (DASSAULT AVIATION, MBDA, EUROCOPTER, SNECMA, EADS), School of Mines (Centre des Materiaux) and GIP-Gerailp. During the first year of the proje...$28.00
ICALEO 2006 Paper #1202 (Mechanical Performance of Laser Deposition Repairing of IN 738 on Directionally Solidified Superalloy Blade)
Mechanical Performance of Laser Deposition Repairing of IN 738 on Directionally Solidified Superalloy Blade
Authors:
Minlin Zhong, Tsinghua University; Beijing Peoples Republic of China
Xiaofeng Zhu, Tsinghua University; Beijing Peoples Republic of China
Wenjin Liu, Tsinghua University; Beijing Peoples Republic of China
Presented at ICALEO 2006
Development of cost-effective repair and rejuvenation processes for DS supperalloy blades are of great economic and technological meanings due to the high cost of the blades. Laser deposition has been proved to be a promising method to repair supperalloy components especially directionally solidified Ni-based superalloy blades, ...$28.00
ICALEO 2006 Paper #1104 (Optimization of Parameters for Effective Welding of Aerospace Components)
Optimization of Parameters for Effective Welding of Aerospace Components
Authors:
Devdas Shetty, University of Hartford; West Hartford CT USA
Adil Widaatalla, University of Hartford; West Hartford CT USA
Tom Eppes, University of Hartford; West Hartford CT USA
Presented at ICALEO 2006
Inconel 625 is nickel-based supper alloy used in different jet engines for its high corrosion resistance. Laser welding of combustor part of jet engine to replace the existing procedure is a major area of research and development. The specification of this manufacturing process requires the weld to be hermetic sealed. The use of fiber laser and the study of the effect of laser welding par...$28.00
ICALEO 2006 Paper #1101 (Fiber Laser Welding of 780MPa High Strength Steel)
Fiber Laser Welding of 780MPa High Strength Steel
Authors:
Zhongjie Liu, Nagoya University; Nagoya Japan
Muneharu Kutsuna, Nagoya University; Nagoya Japan
Guojian Xu, Nagoya University; Nagoya Japan
Presented at ICALEO 2006
A 2kW Ytterbium fiber laser, YLR-2000, was used for welding of 780MPa grade high strength steel-WEL-TEN780RE. The WEL-TEN780RE steel is a kind of heat rolled, fine microstructure low carbon high strength steel used for welded constructions. The effects of defocusing distance, welding speed, shielding gas and its flow rate on cross section bead shape and penetration were studied in continue wave laser beam welding. The effects of frequency and duty c...$28.00
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