2013 ICALEO Conference Proceedings on CD-ROM

Congress General Chair: Stefan Kaierle, Laser Zentrum Hannover e.V., Hannover, Germany

The 32^nd International Congress on Applications of Lasers & Electro-Optics (ICALEO^® 2013) Congress Proceedings includes all submitted papers for three conferences on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing, as well as the opening and closing plenary sessions.

ICALEO 2013 Paper #1001 (Sensor System for Spatially Resolved Observation of the Melt Pool in Selective Laser Melting)

Sensor System for Spatially Resolved Observation of the Melt Pool in Selective Laser Melting
Authors:
Ulrich Thombansen, Fraunhofer Institute for Laser Technology ILT; Aachen USA
Andrei Diatlov, Rwth Aachen University Chair of Lasertechnology (Llt); Aachen Germany
Presented at ICALEO 2013

In selective laser melting, products are generated by selectively melting powder layer by layer. The amount of energy coupled into the powder results in a melt pool that can be observed by detecting its thermal emission.
A sensor system acquires information during processing through a scanner based manufacturing system for selective laser melting. The coaxially coupled detection system is compris...

ICALEO 2013 Paper #1002 (Numerical Simulation and Experimental Investigation of Three-Dimensional Gas-Jet Transportation of Powder Particles In Direct Material Deposition)

Numerical Simulation and Experimental Investigation of Three-Dimensional Gas-Jet Transportation of Powder Particles In Direct Material Deposition
Authors:
Pascal Aubry, Stamp, Arts Et MéTiers Paristech; Paris France
Oleg Kovalev, KhristianovichS Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
Alexander Zaitsev, KhristianovichS Institute of Theoretical and Applied Mechanics; Novosibirsk Russia
Irina Kovaleva, Dipi Laboratory; Saint-Etienne France
Igor Smurov, Dipi Laboratory; Saint-Etienne France
Rezak Mezari, Stamp, Arts Et MéTiers Paristech; Paris France
Thierry Malot, Stamp, Arts Et MéTiers Paristech; Pa...

ICALEO 2013 Paper #1006 (Experimental Analysis of the Influence of Process Parameters on the Melt Pool Formation and Stability in Powder Bed Laser )

Experimental Analysis of the Influence of Process Parameters on the Melt Pool Formation and Stability in Powder Bed Laser
Authors:
Pascal Aubry, Cea Saclay; Gif-Sur-Yvette Cedex France
Runchen Cao, Stamp, Arts Et MéTiers Paristech; Paris France
Kevin Verdier, Stamp, Arts Et MéTiers Paristech; Paris France
Presented at ICALEO 2013

If the powder bed laser melting process is now widely used, the fusion process is not clearly understood yet. Particularly, it is important, formation of spatters and melt pool stability has not been analysed. From previous works, thermo convective effects have evidenced but should be more inv...

ICALEO 2013 Paper #101 (Advanced Welding Techniques with Optimized Accessories for High Brightness 1 µM Lasers)

Advanced Welding Techniques with Optimized Accessories for High Brightness 1 µM Lasers
Authors:
David Havrilla, TRUMPF, Inc.; Plymouth MI USA
Patrick Haug, TRUMPF Inc.; Plymouth USA
Thomas Harrer, Trumpf Laser- Und Systemtechnik Gmbh; Ditzingen Germany
Volker Rominger, Trumpf Laser- Und Systemtechnik Gmbh; Ditzingen Germany
Marco Holzer, Trumpf Laser- Und Systemtechnik Gmbh; Ditzingen Germany
Andrey Andreev, Trumpf Laser- Und Systemtechnik Gmbh; Ditzingen Germany
Presented at ICALEO 2013

Within the past couple of years one can see several trends in laser material processing. On the one hand optimized application results necessita...

ICALEO 2013 Paper #104 (Vertical-Down Hybrid Welding in Ship Building - The Next Innovation Step)

Vertical-Down Hybrid Welding in Ship Building - The Next Innovation Step
Authors:
Simon Olschok, RWTH Aachen University, ISF; Aachen Germany
Uwe Reisgen, Rwth Aachen University, Isf; Aachen
Christoph Turner, RWTH Aachen University; Aachen Germany
Presented at ICALEO 2013

The laser beam GMA hybrid process has, already since the beginning of the year 2000, been used for applications in shipbuilding. At that, linear welds have been welded as butt welds and also as fillet welds as a solid weld connection in the flat position (PA). It is, therefore, the logical consequence, to extend this spectrum to other welding positions, particularly due to the easy handling of the we...

ICALEO 2013 Paper #105 (IVESTIGATING THE WELD DEPTH BEHAVIOUR USING DIFFERENT OBSERVATION TECHNIQUES: X-RAY, INLINE COHERENT IMAGEING AND HIGHSPEED OBSERVATION DURING WELDING ICE)

IVESTIGATING THE WELD DEPTH BEHAVIOUR USING DIFFERENT OBSERVATION TECHNIQUES: X-RAY, INLINE COHERENT IMAGEING AND HIGHSPEED OBSERVATION DURING WELDING ICE
Authors:
Peter Berger, IFSW; Stuttgart
Meiko Boley, Institut fuer Strahlwerkzeuge; 70569 Stuttgart USA
Paul Webster, Laser Depth Dynamics; Kingston, Ontario Canada
James Fraser, Queens University; Kingston, Ontario Canada
Rudolf Weber, Institut Fuer Strahlwerkzeuge; Stuttgart Germany
Cole Van Vlack, Laser Depth Dynamics; Kingston, Ontario Canada
Thomas Graf, Institut Fuer Strahlwerkzeuge; Stuttgart Germany
Presented at ICALEO 2013

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ICALEO 2013 Paper #1101 (Simultaneous Top and Root High Speed Imaging on Droplet Formation in Laser Welding)

Simultaneous Top and Root High Speed Imaging on Droplet Formation in Laser Welding
Authors:
Torbjörn Ilar, Luleå University of Technology; Luleå Sweden
Ingemar Eriksson, Luleå University of Technology; Luleå Sweden
Alexander Kaplan, Luleå University of Technology; Luleå Sweden
Presented at ICALEO 2013

The regular formation of drops, called the humping effect in laser welding has been studied and analyzed by several research groups, however preferably for the top surface. Humping phenomena at the root have been much less investigated, even though they might have similar impact on the mechanical properties of the weld. Root humping is studied based on synchronize...

ICALEO 2013 Paper #1102 (Laser Welding of Niti to Stainless Steels)

Laser Welding of Niti to Stainless Steels
Authors:
Edwin Mok, University of Nottingham Ningbo China; Ningbo Peoples Republic of China
H.C. Man, Department of Industrial and Systems Engineeringhong, the Hong Kong Polytechnic University; Kowloon Hong Kong
Presented at ICALEO 2013

NiTi shape memory alloy has played a leading role on recent development of innovative biomedical devices, sensors and consumer products. However, its high material cost, low formability and poor weldability are critical shortcomings that hinder its further applications. To reduce the material cost, manufacturers prefer to use Nitinol only for the critical part and other alloys for the rest of the component. ...

ICALEO 2013 Paper #1103 (Porosity Suppression In Laser Welding of Pure Nickel and Stainless Steel)

Porosity Suppression In Laser Welding of Pure Nickel and Stainless Steel
Authors:
Xudong Zhang, Hitachi Ltd.; Hitachi-shi, Ibaraki-ken Japan
Nobuaki Kobayashi, Hitachi Automative Systems, Ltd.; Isesaki, Gunma Japan
Yasuhiro Motegi, Hitachi Automotive Systems, Ltd.; Isesaki, Gunma Japan
Norihiro Yade, Hitachi Automotive Systems, Ltd.; Isesaki, Gunma
Presented at ICALEO 2013

In keyhole laser welding of pure nickel and martensite stainless steel, one of the problems is porosity formation in the weld metal. Since almost of the shielding gases, except hydrogen, can hardly be dissolved in nickel after solidification, the gas involved into the keyhole during th...