2012 ICALEO Conference Proceedings on CD-ROM

Congress General Chair: Kunihiko Washio, Paradigm Laser Research Limited, Tokyo, Japan

The 31st International Congress on Applications of Lasers & Electro-Optics (ICALEO® 2012) Congress Proceedings includes all submitted papers for three conferences on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing. This CD also includes papers from the Plenary Session highlighting Green Photonics and Recent Progress in Laser-Based Light Sources and Their Application in Material Processing.

ICALEO 2012 Paper #1001 (The Influence of the Pressure of Ar Shielding Gas on the Keyhole Behavior During CO2 Laser Welding of TA15)

The Influence of the Pressure of Ar Shielding Gas on the Keyhole Behavior During CO2 Laser Welding of TA15
Authors:
Duan Aiqin, National Key Laboratory of Science and Technology on Power Beam Processes, BAMTRI; Beijing Peoples Republic of China
Gong Shuili, National Key Laboratory of Science and Technology on Power Beam Processes, BAMTRI; Beijing Peoples Republic of China
Huang Song, National Key Laboratory of Science and Technology on Power Beam Processes, BAMTRI; Beijing Peoples Republic of China
Presented at ICALEO 2012

Many studies have shown that during laser welding, shielding gases play a key role in protecting the welding area from the surrounding air, and have...

ICALEO 2012 Paper #1003 (New Hot Cracking Criterion for Laser Welding in Close-Edge Position)

New Hot Cracking Criterion for Laser Welding in Close-Edge Position
Authors:
Peter Stritt, GSaME Graduate School of Excellence Advanced Manufacturing Engineering; Stuttgart Germany
Rudolf Weber, IFSW Institut fuer Strahlwerkzeuge; Stuttgart Germany
Thomas Graf, IFSW Institut fuer Strahlwerkzeuge; Stuttgart Germany
Steffen Mueller, AUDI AG; Neckarsulm Germany
Jan-Philipp Weberpals, AUDI AG; Neckarsulm Germany
Presented at ICALEO 2012

Hot cracking is one of the major issues in laser welding aluminium alloys. The considered aluminium, magnesium and silicon based alloys (6xxx series) are highly crack sensitive due to a large solidification interva...

ICALEO 2012 Paper #1005 (A Comparative Study Between the Low Carbon Steel and the Galvanized Steel Welding)

A Comparative Study Between the Low Carbon Steel and the Galvanized Steel Welding
Authors:
Seung Hwan Lee, Center for Lasers and Plasmas for Advanced Manufacturing, Univ. of Michigan at Ann Arbor; Ann Arbor MI USA
Jyoti Mazumder, Center for Lasers and Plasmas for Advanced Manufacturing, Univ. of Michigan at Ann Arbor; -
Presented at ICALEO 2012

In this paper, a comparative study between the low
carbon steel and the galvanized steel welding is
reported to observe temporal evolution of keyhole
since the keyhole variation is decisive for the weld
quality and the zinc coating causes the instability of the
keyhole in the galvanized steel welding. Galvanized
steel sheets and bare...

ICALEO 2012 Paper #103 (Modeling of Keyhole Formation in Laser and Laser Arc Hybrid Welding Based on CFD Simulations - Invited Presentation)

Modeling of Keyhole Formation in Laser and Laser Arc Hybrid Welding Based on CFD Simulations - Invited Presentation
Authors:
Won-Ik Cho, Samsung Electro-Mechanics; -
Muhammad Sohail, Department of Mechanical Engineering, KAIST; -
Suck-Joo Na, Department of Mechanical Engineering, KAIST; Yuseong-gu, Daejeon South Korea
Presented at ICALEO 2012

In the first part of this presentation, the mathematical models of laser welding process, especially the beam path generation in keyhole, are introduced to simulate the high power laser welding processes. The recoil pressure, multiple reflections and Fresnel absorption models are employed to describe the laser keyhole phenomen...

ICALEO 2012 Paper #104 (Some Answers to Frequently Asked Questions and Open Issues of Laser Beam Cutting - Invited Presentation)

Some Answers to Frequently Asked Questions and Open Issues of Laser Beam Cutting - Invited Presentation
Authors:
Dirk Petring, Fraunhofer Institute for Laser Technology ILT; Aachen Germany
Frank Schneider, Fraunhofer Institute for Laser Technology ILT; -
Norbert Wolf, Fraunhofer Institute for Laser Technology ILT; -
Presented at ICALEO 2012

Even established laser processing technologies, such as cutting, are far away from being completely understood. Nevertheless, the progress in industrially available laser cutting systems and applications is quite respectable. Fiber laser cutting changed from a debatable newcomer to a serious part of the business. Understanding o...

ICALEO 2012 Paper #1101 (Local Laser Joining of Glass and Silicon)

Local Laser Joining of Glass and Silicon
Authors:
Ville Hautala, Just Presenter; Tampere Finland
Assi Hansen, Tampere Univ. of Technology, Department of Production Engineering; Tampere Finland
Tiina Amberla, Corelase Ltd.; Tampere Finland
Yasuhiro Okamoto, Okayama Univ.; Okayama 7008350 Japan
Isamu Miyamoto, Osaka Univ.; Osaka 5650871 Japan
Presented at ICALEO 2012

In this work, we present a study on the local laser joining of two different glass types to silicon. Laser bonding tests were made using picosecond pulsed fiber laser with a wavelength of 1060nm. Surfaces of the wafers were carefully cleaned of particles, organic and metallic ...

ICALEO 2012 Paper #1103 (Dissimilar Metal Joining of Mg Alloy to Al Alloy by Laser Brazing Process)

Dissimilar Metal Joining of Mg Alloy to Al Alloy by Laser Brazing Process
Authors:
Sook Hwan Kim, Research Institute of Industrial Science of Technology; Pohang South Korea
Y. Norman Zhou, Center for Advanced Materials Joining, Univ. of Waterloo; - Canada
LiQun Li, Harbin Institute of Technology; -
Ali Nasin, Center for Advanced Materials Joining, Univ. of Waterloo; -
Presented at ICALEO 2012

Laser brazing between commercially Mg alloy(AZ31) and Al alloy has been carried out in the Mg-based and Al-based insert metals. The brazement has been evaluated using optical microscopy, micro vickers hardness, electron probe micro-analysis (EPMA) and tensile shea...

ICALEO 2012 Paper #1201 (Production of Silver Conductive Paths by Laser Processing)

Production of Silver Conductive Paths by Laser Processing
Authors:
Melanie Meixner, Fraunhofer Institute for Laser Technology (ILT); - Germany
Jochen Stollenwerk, Fraunhofer Institute for Laser Technology (ILT), Chair for the Technology of Optical Systems (TOS), RWTH Aachen Univ.; Aachen
Konrad Wissenbach, Fraunhofer Institute for Laser Technology (ILT); Aachen
Presented at ICALEO 2012

An increasing number of electronic applications need conductive paths on different substrates. One approach to apply these structures is by wet-chemical coating processes which have been proven to be a powerful tool for producing functional layers. Printing techniques show great pote...

ICALEO 2012 Paper #1202 (Study on Cavitation Resistance and Wear Property of NiAl-VC Laser Alloyed Layer on TC4)

Study on Cavitation Resistance and Wear Property of NiAl-VC Laser Alloyed Layer on TC4
Authors:
Jianhua Yao, Key Laboratory of E&M (Zhejiang Univ.of Technology) , Ministry of Education & Zhejiang Province, Research Center of Laser Processing Technology and Engineering, Zhejiang Univ.of Technology; Hangzhou Peoples Republic of China
Bo Ren, Key Laboratory of E&M (Zhejiang Univ.of Technology) , Ministry of Education & Zhejiang Province, Research Center of Laser Processing Technology and Engineering, Zhejiang Univ.of Technology; -
Qunli Zhang, Key Laboratory of E&M (Zhejiang Univ.of Technology) , Ministry of Education & Zhejiang Province, Research Center of Laser Processing Technology an...