ICALEO 2010 Paper #1303 (Surface Preparation for Shipbuilding using Pulsed High-Power Fibre Laser)

Surface Preparation for Shipbuilding using Pulsed High-Power Fibre Laser
Authors:
T. J. Kwee, Centre of Innovation (Marine & Offshore Technology), Ngee Ann Polytechnic, Singapore; Singapore Singapore
G. X. Chen, Centre of Innovation (Marine & Offshore Technology), Ngee Ann Polytechnic; - Singapore
N. R. Lei, Centre of Innovation (Marine & Offshore Technology), Ngee Ann Polytechnic, Singapore; Singapore Singapore
K. P. Tan, Centre of Innovation (Marine & Offshore Technology), Ngee Ann Polytechnic, Singapore; Singapore Singapore
Y. S. Choo, Faculty of Engineering, National University of Singapore, Singapore; Singapore Singapore
M. H. Hong, Faculty of...

ICALEO 2010 Paper #1302 (Polygon Scanner for Laser Paint Stripping)

Polygon Scanner for Laser Paint Stripping
Authors:
Stan Ream, EWI (Edison Welding Institute); Columbus OH USA
Craig Walters, CWA (Craig Walters Association); Powell OH USA
Presented at ICALEO 2010

Many vehicles and structures require removal of existing paints and/or coatings. Traditional paint removal methods utilize toxic solvents and media blasting, both of which create a multiplication of resultant hazardous waste. Other paint removal technologies involve thermal processes, such as flash lamps and CO2 bead blasting, in conjunction with each other or separately. For many years the Air Force, NASA, Navy, DOT, and other government agencies have been investigating laser strippin...

ICALEO 2010 Paper #1205 (Development of Mg Tube using Laser Welding for Bike Frame)

Development of Mg Tube using Laser Welding for Bike Frame
Authors:
Mok-Young Lee, Welding Research Center, RIST; Pohang South Korea
Presented at ICALEO 2010

Magnesium alloy is being used for structural material since it has high specific strength. Tubular shape was effective way for enhanced structural design. To manufacture the tube, it is necessary to weld the butted joint of both tubular formed sides. But the magnesium alloy was hardly welded with conventional welding processes. The laser welding was effective way to joint magnesium alloys because it had high weld strength and productivity compare with other welding processes. In this study, magnesium alloy sheets was formed at elevated temp...

ICALEO 2010 Paper #1204 (High-Brightness Disk Laser Welding of Magnesium Alloys)

High-Brightness Disk Laser Welding of Magnesium Alloys
Authors:
Mohamed Wahba, Central Metellurgical Research & Development Institute; Helwen Egypt
Masami Mizutani, Graduate School of Engineering, Osaka University; Osaka Japan
Yousuke Kawahito, Joining and Welding Research Institute, Osaka University; Osaka Japan
Seiji Katayama, Joining and Welding Research Institute, Osaka University; Osaka Japan
Presented at ICALEO 2010

The recent development of fiber and disk laser sources with excellent beam quality has increased the capability and enhanced the performance of the laser welding process. Compared to Nd:YAG and CO2 laser sources, this superior beam qualit...

ICALEO 2010 Paper #1203 (In-Situ Melt Identification during Laser Beam Welding)

In-Situ Melt Identification during Laser Beam Welding
Authors:
Michael F. Zaeh, Institute for Machine Tools and Industrial Management (IWB) Technische Universität München; Garching Germany
Rüdiger Daub, Institute for Machine Tools and Industrial Management (IWB) Technische Universität München; Garching Germany
Sonja Huber, Institute for Machine Tools and Industrial Management (IWB) Technische Universität München; Garching Germany
Presented at ICALEO 2010

Market needs for higher geometric flexibility in product dimensions and ever shorter production cycles represent a demand for new approaches in working lightweight space structures. Laser welding processes ar...

ICALEO 2010 Paper #1202 (Distortion Effects in Micro Welding with Fibre Laser)

Distortion Effects in Micro Welding with Fibre Laser
Authors:
Claus Thomy, BIAS - Bremer Institut fűr angewandte Strahltechnik GmbH; Bremen Germany
Felix Möller, BIAS - Bremer Institut für angewandte Strahltechnik GmbH; Bremen Germany
Frank Vollertsen, BIAS - Bremer Institut für angewandte Strahltechnik GmbH; Bremen Germany
Presented at ICALEO 2010

While effects associated with distortion are already understood quite well in keyhole laser welding in the macro range, this is not yet the case for keyhole welding in the micro range. Especially, results from the macro range can not be transferred easily to the micro range, as scaling down complex welded functional comp...

ICALEO 2010 Paper #1201 (Welding of Titanium, Steel and Aluminum - Lithium Alloy by the Cw С2-Laser Beam)

Welding of Titanium, Steel and Aluminum - Lithium Alloy by the Cw С2-Laser Beam
Authors:
Yury Afonin, S.A. Khristianovich Institute of Theoreical and Applied Mechanics SB RAS; Novosibirsk Russia
Anatoly Cherepanov, S.A. Khristianovich Institute of Theoreical and Applied Mechanics SB RAS; Novosibirsk Russia
Anatoly Orishich, S.A. Khristianovich Institute of Theoreical and Applied Mechanics SB RAS; Novosibirsk Russia
Presented at ICALEO 2010

A model describing the process of formation of a heterogeneous nucleus on nano-size particles which regards the linear tension on the boundary of three phases (nano-particle – nucleus – melt) is presented. The developed theory...

ICALEO 2010 Paper #1105 (Simultaneous Sub Second Laser Welding of Polymers with Diffractive Optics)

Simultaneous Sub Second Laser Welding of Polymers with Diffractive Optics
Authors:
Petri Laakso, VTT Technical Research Center of Finland; Lappeenranta Finland
Saara Ruotsalainen, VTT Technical Research Center of Finland; Lappeenranta Finland
Tuomas Purtonen, Lappeenranta University of Technology; Lappeenranta Finland
Hannu Minkkinen, VTT Technical Research Center of Finland; Tampere Finland
Veli Kujanpää, VTT Technical Research Center of Finland / Lappeenranta University of Technology; Lappeenranta Finland
Antti Salminen, VTT Technical Research Center of Finland / Lappeenranta University of Technology; Tampere Finland
Presented at ICALE...

ICALEO 2010 Paper #1104 (Laser Reconditioning of Crankshafts: from Lab to Application)

Laser Reconditioning of Crankshafts: from Lab to Application
Authors:
Henry Koehler, Bias - Bremer Institut Fuer Angewandte Strahltechnik Gmbh; Bremen Germany
Knut Partes, Bias - Bremer Institut Fuer Angewandte Strahltechnik Gmbh; Bremen Germany
Thomas Seefeld, Bias - Bremer Institut Fuer Angewandte Strahltechnik Gmbh; Bremen Germany
Frank Vollertsen, Bias - Bremer Institut Fuer Angewandte Strahltechnik Gmbh; Bremen Germany
Presented at ICALEO 2010

In marine diesel engines, damaged crankshafts are common and expensive problems. Worn surfaces of main bearings and connection rod bearings often require a complete replacement of these components. This paper pr...

ICALEO 2010 Paper #1103 (Process Parameters Analysis of High Power Direct Diode Laser Cladding)

Process Parameters Analysis of High Power Direct Diode Laser Cladding
Authors:
Soundarapandian Santhanakrishnan, Research Center for Advanced Manufacturing, Southern Methodist University; Dallas TX USA
Fanrong Kong, Research Center for Advanced Manufacturing, Southern Methodist University; -
Radovan Kovacevic, Research Center for Advanced Manufacturing, Southern Methodist University; -
Presented at ICALEO 2010

Nowadays, high-power direct diode laser (HPDDL) is successfully used in industry as a versatile tool for repairing worn-industrial parts by selective coating. HPPDL based cladding is an economical process to increase the wear and corrosion resistance properties...