ICALEO 2009 Paper #409 (Application of Pressure-Sensitive Adhesive Systems in Laser-Beam Welding of Lap Joints)
Application of Pressure-Sensitive Adhesive Systems in Laser-Beam Welding of Lap Joints
Authors:
Uwe Reisgen, Rwth Aachen University, Isf; Aachen Germany
Klaus Dilger, IFS, TU Braunschweig; - Germany
Simon Olschok, Rwth Aachen University, Isf; Aachen Germany
Nikolaus Wagner, Rwth Aachen University, Isf; Aachen Germany
Presented at ICALEO 2009
This paper deals with a novel hybrid technology which has been developed by the institutes ISF, Aachen and IFS, Braunschweig. Using this method, the joining partners have been preassembled by means of pressure sensitive adhesive and subsequently laser-beam welded on lap joint. This innovative technology promises a redu...$28.00
ICALEO 2009 Paper #408 (Laser Direct Joining of Ceramic and Engineering Plastic)
Laser Direct Joining of Ceramic and Engineering Plastic
Authors:
Yousuke Kawahito, Jwri,Osaka University; Ibaraki Japan
Yusuke Niwa, Jwri, Osaka University; Ibaraki, Osaka Japan
Seiji Katayama, Jwri, Osaka University; Ibaraki, Osaka Japan
Presented at ICALEO 2009
Several materials such as metals, plastics and ceramics have been widely used in industrial applications of automobiles, aircrafts and electronic devices. Joining of these dissimilar materials is necessary and important from a manufacturing viewpoint. The joining is generally performed using adhesive bonds (glues) or mechanical tools such as bolts and rivets. However, these joining processes have some probl...$28.00
ICALEO 2009 Paper #407 (Laser Welding of Lap Joint Between Copper and Brass)
Laser Welding of Lap Joint Between Copper and Brass
Authors:
Peng Dong, Beijing University of Technology; Beijing Peoples Republic of China
Rongshi Xiao, Beijing University of Technology; Beijing Peoples Republic of China
Presented at ICALEO 2009
Copper and its alloys are widely applied in electronics industry, automotive industry refrigeration and air-conditioning industry et al., because of their excellent thermal conductivity. Traditionally, brazing and soldering are used to join them. However, those methods may bring some problems such as low efficiency and pollution. In this paper, a CW Nd:YAG laser with a output power of 2kW was used to weld lap joint between brass and copper...$28.00
ICALEO 2009 Paper #406 (Study on the Activating Flux Laser Welding of Titanium Alloy)
Study on the Activating Flux Laser Welding of Titanium Alloy
Authors:
Chen li, BAMTRI; Beijing Peoples Republic of China
Gong Shuili, BAMTRI; - Peoples Republic of China
Duan Aiqin, BAMTRI; - Peoples Republic of China
Presented at ICALEO 2009
The CO2 laser welding was conducted to investigate the effect of activating flux on laser welding of TA15 titanium alloy with 2.5mm thickness in this paper, which originally developed to improve the penetration depth and reduce the weld porosity for TIG welding of titanium alloy. Results show that the activating flux can eliminate weld undercut defect, and increase the weld depth with the same laser welding parameters. It is also ...$28.00
ICALEO 2009 Paper #405 (Study on Welding of 2024 Aluminum Alloy Sheet with Disc Laser)
Study on Welding of 2024 Aluminum Alloy Sheet with Disc Laser
Authors:
Xudong Zhao, Beijing University of Technology; Beijing Peoples Republic of China
Rongshi Xiao, Beijing University of Technology; Beijing Peoples Republic of China
Kai Chen, Beijing University of Technology; Beijing Peoples Republic of China
Presented at ICALEO 2009
In the fields of medical equipment manufacturing and aerospace engineering, aluminum alloys are widely applied to make the shells of the electronic devices. Laser welding is considered as a suitable technology to produce those components for the lower heat input and higher joint strength. In this paper, a 4.0kW disc laser was used to weld...$28.00
ICALEO 2009 Paper #404 (Laser Beam Welding with Hypereutectic ALSI Filler Material)
Laser Beam Welding with Hypereutectic ALSI Filler Material
Authors:
Thomas Seefeld, BIAS; Bremen Germany
Frank Buschenhenke, Bias; Bremen Germany
Frank Vollertsen, Bias; Bremen Germany
Presented at ICALEO 2009
For laser welding of AlMgSi (6xxx) alloys filler alloys are commonly required to reduce the hot cracking susceptibility by rising the silicon content in the weld pool to a non critical value. For slender welds obtained e.g. in welding with high brightness lasers, this is often difficult to achieve. The use of hypereutectic Al-Si filler materials might be helpful; however these fillers are not readily available in the form of thin wire. In the present work, hypere...$28.00
ICALEO 2009 Paper #403 (Weld Strength Improvement for Al Alloy by using Laser Weaving Method)
Weld Strength Improvement for Al Alloy by using Laser Weaving Method
Authors:
Kwang-Deok Choi, -; -
Young-Nam Ahn, -; -
Cheolhee Kim, KITECH; Yeonsu-gu South Korea
Presented at ICALEO 2009
In Al alloy welding, the linear laser welds have the shear-tensile strength lower than that of the base metal because of porosities and cracks resulting from unstable keyhole and high crack sensitivity. Various techniques have been introduced to improve the joint strength of laser welds and the laser weaving is also an alternative. In this research, Al alloy sheets were used as the base material with a thickness of 1mm, and lap welding and bead-on-plate crack test were implemented...$28.00
ICALEO 2009 Paper #401 (Statistical Analysis of Low Porosity Laser Welding of Ti Alloys using a Directed Gas Jet)
Statistical Analysis of Low Porosity Laser Welding of Ti Alloys using a Directed Gas Jet
Authors:
Jonathan Blackburn, The University of Manchester; Manchester Great Britain
Chris Allen, TWI Ltd; Cambridge Great Britain
Paul Hilton, TWI Ltd; Cambridge Great Britain
Lin Li, The University of Manchester; Manchester Great Britain
Presented at ICALEO 2009
Titanium alloys are increasingly utilized in the aerospace sector as a result of their high specific strength, fatigue performance and corrosion resistance. It has been reported previously by the authors that high quality, low internal porosity content welds can be made in titanium alloys using near-infrared l...$28.00
ICALEO 2009 Paper #307 (Collimated Laser Homogenizer)
Collimated Laser Homogenizer
Authors:
Michael Scaggs, Neoteric Concepts; Weston FL USA
Gil Haas, Haas Laser Technologies, Inc; Flanders NJ USA
Presented at ICALEO 2009
A new laser beam homogenizer has been developed which converts a highly spatial coherent, Gaussian laser beam into a collimated, square homogenized field. The optical device converts a lasers Gaussian input beam through multiplexing and recombination without optical interference and yet is collimated over > 5 meters. Laser beam property variations do not adversely affect the performance of the homogenizer in contrast to phase shifting homogenizers and can be utilized from the lasers objective lens entrance...$28.00
ICALEO 2009 Paper #306 (Characterization of Laser Beam Intensity used for Machining)
Characterization of Laser Beam Intensity used for Machining
Authors:
Mon Thet Thet, Universiti Malaysia Pahang; Kuantan Malaysia
Nafrizuan Mat Yahya, Universiti Malaysia Pahang; Kuantan Malaysia
S. Azlyna, Universiti Malaysia Pahang; Kuantan Malaysia
Presented at ICALEO 2009
Lasers have been increasingly used for machining of various materials. One of the problems with laser machining is unwanted heat-affected zone, which downgrades the quality of the cut surface. Such heat-affected zone occurs very often due to lack of information on the characteristics of the beam intensity. The objective of this research is to develop a model that explains the characteristic of the...$28.00
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