ICALEO 2005 Paper #402 (> 76% CW Wall-plug Efficiency at High Powers from 0.98-µM Emitting Laser Diodes: Sheds Shows Route To 1kw Cw Diode Laser Bar)
> 76% CW Wall-plug Efficiency at High Powers from 0.98-µM Emitting Laser Diodes: Sheds Shows Route To 1kw Cw Diode Laser Bar
Authors:
Paul Crump, nLight Corporation; Vancouver WA USA
Shiguo Zhang, nLight Corporation; Vancouver WA USA
Weimin Dong, nLight Corporation; Vancouver WA USA
Mike Grimshaw, nLight Corporation; Vancouver WA USA
Damian Wise, nLight Corporation; Vancouver WA USA
Mark DeFranza, nLight Corporation; Vanouver WA USA
Sandrio Elim, nLight Corporation; Vancouver WA USA
Jun Wang, nLight Corporation; Vancouver WA USA
Jason Farmer, NLight Corporation; Vancouver WA USA
Suhit Das, nLight...$28.00
ICALEO 2005 Paper #401 (High Power Conversion Efficiency Diode Lasers)
High Power Conversion Efficiency Diode Lasers
Authors:
Manoj Kanskar, Alfalight, Inc.; Madison WI USA
E. Stiers, Alfalight, Inc.; Madison WI USA
T. Goodnough, Alfalight Inc; Madison WI USA
D. Botez, University of Wisconsin-Madison; Madison WI USA
L.J. Mawst, University of Wisconsin-Madison; Madison WI USA
Presented at ICALEO 2005
Diode lasers have been optimized for maximum electrical-to-optical power conversion efficiency for use as pump source for high-energy solid-state lasers, fiber-lasers, telecommunication fiber amplifiers and industrial lasers. We will discuss modeling and the latest experimental data on 797nm, 808nm, 915 nm and 975 nm ...$28.00
ICALEO 2005 Paper #307 (Hybrid Bifocal Laser Welding of Aluminium)
Hybrid Bifocal Laser Welding of Aluminium
Authors:
Andreas Trautmann, Iwb Technical University of Munich; Garching Germany
Michael Zaeh, IWB, Technical University of Munich; Garching Germany
Presented at ICALEO 2005
This paper renders the welding of extruded aluminium by a hybrid bifocal laser system. The aluminium alloy considered is EN AW-6060 (AlMgSi0,5) temper T66 without and with filler wire Al4047 A (SG-AlSi12). The hybrid laser system consists of a combination of an Nd:YAG laser with a high power diode laser (HPDL), both of 3 kW maximum output power. The beam parameter product (BPP) of the employed Nd:YAG laser of 25 mm*mrad translates with an optical system of focal length ...$28.00
ICALEO 2005 Paper #306 (Experimental Analysis of Practical Aspects of Hybrid Welding of Thick Sections)
Experimental Analysis of Practical Aspects of Hybrid Welding of Thick Sections
Authors:
Edward Reutzel, Applied Research Laboratory, Pennsylvania State University; State College PA USA
Jay Tressler, Applied Research Laboratory, Pennsylvania State University; State College PA USA
Shawn Kelly, Applied Research Laboratory, Pennsylvania State University; State College PA USA
Richard Martukanitz, Applied Research Laboratory, Pennsylvania State University; State College PA USA
Presented at ICALEO 2005
Laser-Gas Metal Arc (GMA) hybrid welding is fast making the transition from laboratory to production, in industries as diverse as shipbuilding to automobile manufa...$28.00
ICALEO 2005 Paper #305 (Laser - MIG Hybrid Weldability of High Strength Steel for Car Industry)
Laser - MIG Hybrid Weldability of High Strength Steel for Car Industry
Authors:
Mok-Young Lee, RIST; Pohang Kyongsangbukdo Korea
Presented at ICALEO 2005
Main purpose of this study was compare between laser and hybrid weldability of high strength TRIP steel for car industry. For hybrid welding, 2kW CW Nd-YAG laser and 350A inveter controlled MIG power source was used. Plasma and metal transfer was studied with high speed photography. Perfomance of welds were studied in fatigue test.$28.00
ICALEO 2005 Paper #304 (Metallurgical Study on Laser - MAG Hybrid Welding of HSLA-590 Steel)
Metallurgical Study on Laser - MAG Hybrid Welding of HSLA-590 Steel
Authors:
Muneharu Kutsuna, Nagoya University; Nagoya Japan
Zhong Liu, Nagoya University, School of Engineering ; Nagoya Japan
Presented at ICALEO 2005
The Laser-Arc hybrid welding of HSLA-590 steel has been studied using 2.4kW CO2 laser and 350A MAG welding machine. There are many parameters in hybrid welding process. Each parameter affects the welding results in hybrid welding. The defocusing distance, distance between laser and arc, welding speed, arc torch angle, arrangement of laser and arc, arc welding current and voltage are investigated. Arc leading hybrid welding is better than laser leading hybrid welding ...$28.00
ICALEO 2005 Paper #303 (A Study of the Phenomenon of CO2-Laser Welding with Filler Wire and CO2-MAG Hybrid Welding)
A Study of the Phenomenon of CO2-Laser Welding with Filler Wire and CO2-MAG Hybrid Welding
Authors:
Anna Fellman, LUT; Lappeenranta Finland
Antti Salminen, LUT; Lappeenranta Finland
Presented at ICALEO 2005
Laser hybrid welding is today a topic with special interest from both researchers of laser welding and utilizing industry. This is due to the problems of normal autogenous laser welding encountering especially explain case of producing large metal structures.
There are quite a few theories presented how the laser and arc welding processes form a united process. Most of the advantages gained is said to be caused by the fact that the processes act together and support each other...$28.00
ICALEO 2005 Paper #302 (Fundamental Study on Welding Phenomena in Pulsed Laser-Gma Hybrid Welding)
Fundamental Study on Welding Phenomena in Pulsed Laser-Gma Hybrid Welding
Authors:
Susumu Tsukamoto, National Institute for Materials Science; Tsukuba Ibaraki Japan
Tomohiro Sugino, National Institute for Materials Science; Ibaraki Japan
Terumi Nakamura, National Institute for Materials Science; Tsukuba Japan
Goro Arakane, National Institute for Materials Science; Tsukuba Ibaraki Japan
Presented at ICALEO 2005
Hybrid welding phenomena such as the interaction between the arc and laser plume, bead formation and metal transfer have been investigated. CW or power modulated CO2 laser is combined with pulsed GMA process. Pulsing frequency, arc current and arc v...$28.00
ICALEO 2005 Paper #301 (Laser-Tig Hybrid Welding of Very Thin Austenitic Stainless Steel Sheets)
Laser-Tig Hybrid Welding of Very Thin Austenitic Stainless Steel Sheets
Authors:
Jorge L. Arias, AIMEN; Porriontevedra Spain
Ambroise Vandewynckele, AIMEN; Porriontevedra Spain
JoaquVuez, AIMEN; Porriontevedra Spain
Pablo Romero, AIMEN; Porriontevedra Spain
Presented at ICALEO 2005
Laser welding of austenitic stainless steel sheets to produce thin wall pipes and chimneys requires an excellent cut edge preparation and a very precise fitting. In order to relax these requirements, laser-TIG hybrid welding of very thin 316L stainless steel sheets (0.4-0.8 mm thick) in a butt joint configuration has been studied. A diode-pumped Nd:YAG lase...$28.00
ICALEO 2005 Paper #2307 (Advantages of Coaxial External Illumination for Monitoring and Control of Laser Materials Processing)
Advantages of Coaxial External Illumination for Monitoring and Control of Laser Materials Processing
Authors:
Boris Regaard, Fraunhofer ILT; Aachen Germany
Stefan Kaierle, Fraunhofer ILT; Aachen NRW Germany
Wolfgang Schulz, Fraunhofer ILT; Aachen Germany
Anas Moalem, Lehrstuhl fr Lasertechnik, Aachen University; Aachen Germany
Presented at ICALEO 2005
Due to the progressive use of laser materials processing in industrial mass production and the continuous expansion of process limits, the need of sensor systems for process monitoring increases. Sensor systems are used in process development for gathering process information as well as in the production pro...$28.00
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