ICALEO 2008 Paper #M309 (Weld Depth Control in Fiber Laser Welding of Thin Metal Sheets)
Weld Depth Control in Fiber Laser Welding of Thin Metal Sheets
Authors:
Jens Gedicke, Fraunhofer Institute for Lasertechnology; Aachen Germany
Alexander Olowinsky, Fraunhofer Institute for Laser Technology; Aachen Germany
Ulrich Jansen, Fraunhofer Institute for Lasertechnology; Aachen Germany
Wolfgang Schulz, Fraunhofer Institute for Laser Technology; Aachen Germany
Arnold Gillner, Fraunhofer Institute for Laser Technology; Aachen Germany
Presented at ICALEO 2008
Laser beam welding of electrical connections or sealing of casings are typical applications in the field of precision engineering. Controlling the shape of the welded connections is a...$28.00
ICALEO 2008 Paper #M308 (Laser Based Contacting of Thin Metal Coated Active Elements)
Laser Based Contacting of Thin Metal Coated Active Elements
Authors:
Stephan Neugebauer, Bayerisches Laserzentrum Gmbh; Erlangen Germany
Florian Albert, Bayerisches Laserzentrum Gmbh; Erlangen Germany
Michael Schmidt, Bayerisches Laserzentrum Gmbh; Erlangen Germany
Thomas Frick, Bayerisches Laserzentrum; Erlangen Germany
Presented at ICALEO 2008
Present research in the field of active noise absorption at automotive assemblies deals with piezoelectric elements embedded into parts like gear boxes or car bodies. Under closed loop operation, these elements are able to modify the oscillation behaviour of the whole body. This may significantly reduce the assembl...$28.00
ICALEO 2008 Paper #M307 (A Study of High-Speed Remote Micro-Processing with a Galvanometer Based Fiber Laser)
A Study of High-Speed Remote Micro-Processing with a Galvanometer Based Fiber Laser
Authors:
F. Parker, National Centre for Laser Applications (Ncla); Galway Ireland
C. O\'Brien, Ncla; Galway Ireland
F. Martino-Gauchi, Institut D\\'Optique; Palaiseau France
A. Conneely, Ncla; Galway Ireland
G.M. O\'Connor, Ncla; Galway Ireland
J. Magee, Rofin; Galway Ireland
Presented at ICALEO 2008
High power fiber lasers offer several advantages for industrial use; high power with stable output, parameter flexibility, low maintenance costs, high efficiency and small footprint. A 200W SPI / Rofin fiber laser system was used to study the potentia...$28.00
ICALEO 2008 Paper #M306 (High Speed Video-based Melt Pool Surveillance in Laser Spot Welding)
High Speed Video-based Melt Pool Surveillance in Laser Spot Welding
Authors:
Nicolaj C. Stache, RWTH-Aachen University, Institute of Imaging & Computer Vision; Aachen Germany
Jens Gedicke, Fraunhofer Institute for Laser Technology; Aachen Germany
Jonas Dieckelmann, RWTH-Aachen University, Institute of Imaging & Computer Vision; Aachen Germany
Robert Firnich, RWTH-Aachen University, Institute of Imaging & Computer Vision; Aachen Germany
Alexander Olowinsky, Fraunhofer Institute for Laser Technology; Aachen Germany
Peter Abels, Fraunhofer Institute for Laser Technology; Aachen Germany
Til Aach, RWTH-Aachen University, Institute of Imag...$28.00
ICALEO 2008 Paper #M305 (Hermetic Joining of Micro-Devices using a Glass Frit Intermediate Layer and a Scanning Laser Beam)
Hermetic Joining of Micro-Devices using a Glass Frit Intermediate Layer and a Scanning Laser Beam
Authors:
Qiang Wu, Heriot Watt University; Edinburgh Great Britain
Norbert Lorenz, Heriot Watt University; Edinburgh Great Britain
Changhai Wang, Heriot Watt University; Edinburgh Great Britain
Kevin Cannon, Ge Aviation Systems; Suffolk Great Britain
Andrew J. Moore, Heriot Watt University; Edinburgh Great Britain
Duncan P. Hand, Heriot Watt University; Edinburgh Great Britain
Presented at ICALEO 2008
Many micro-electro-mechanical-systems (MEMS) devices require hermetic sealing to prevent moisture and dust ingress. A number of differ...$28.00
ICALEO 2008 Paper #M304 (Novel Fusion Welding Technology of Glass Using Ultrashort Pulse Lasers (Invited Presentation - 40 Minutes))
Novel Fusion Welding Technology of Glass Using Ultrashort Pulse Lasers (Invited Presentation - 40 Minutes)
Authors:
Isamu Miyamoto, Osaka University; Hyogo Japan
Alexander Horn, Lehrstuhl fuer Lasertechnik; Aachen Germany
Dirk Wortmann, Lehrstuhl fuer Lasertechnik; Aachen Germany
Jens Gottmann, Lehrstuhl fuer Lasertechnik; Aachen Germany
Fumiyo Yoshino, IMRA America, Inc; Fremont CA USA
Ilja Mingareev, Lehrstuhl fuer Lasertechnik; Aachen Germany
Michael Schmidt, Bayerisches Laserzentrum; Erlangen Germany
Peter Bechtold, Bayerisches Laserzentrum; Erlangen Germany
Yasuhiro Okamoto, Okayama University; Okayama Ja...$28.00
ICALEO 2008 Paper #M301 (In-Process Monitoring and Adaptive Control in Micro Lap Seam Welding with Fiber Laser)
In-Process Monitoring and Adaptive Control in Micro Lap Seam Welding with Fiber Laser
Authors:
Terumasa Ohnishi, Osaka University; Osaka Japan
Yousuke Kawahito, Osaka University; Ibaraki Japan
Seiji Katayama, Osaka University; Osaka Japan
Presented at ICALEO 2008
The objective of this research is to obtain fundamental knowledge of in-process monitoring and adaptive control for fully-penetrated welds in micro lap seam welding of 0.1 mm-thin titanium sheets with a 100-W single-mode fiber laser. In these welding conditions aiming conventionally and adaptively at the formation of a stable weld bead on the bottom surface, when welding speed decreased, the weld was changed f...$28.00
ICALEO 2008 Paper #M208 (Analysis of Influence Factors on Microscale Laser Shock Processing in Fem Simulation)
Analysis of Influence Factors on Microscale Laser Shock Processing in Fem Simulation
Authors:
Liangcai Xiong, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
Zhigang Che, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
Tielin Shi, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
Rui Peng, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
Presented at ICALEO 2008
Microscale Laser Shock Processing (μLSP) can generate plastic deformation and compressive residual stresses in Micro Electromechanical Systems (MEMS) components through laser-induced pl...$28.00
ICALEO 2008 Paper #M207 (Numerical Simulation on Shock Wave Propagation for Microscale Laser Shock Processing)
Numerical Simulation on Shock Wave Propagation for Microscale Laser Shock Processing
Authors:
Liangcai Xiong, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
Zhigang Che, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
Nan Tang, No.51 Middle School of Zhengzhou; Zhengzhou Peoples Republic of China
Tielin Shi, Huazhong University of Science & Technology; Wuhan Peoples Republic of China
Presented at ICALEO 2008
Microscale Laser Shock Processing (μLSP) can generate compressive residual stress in Micro Electromechanical Systems (MEMS) components through laser-induced plasma and pressure pulse for impro...$28.00
ICALEO 2008 Paper #M205 (Resonance Raman Spectra of the Overcooled Laser-induced Al Plasmas)
Resonance Raman Spectra of the Overcooled Laser-induced Al Plasmas
Authors:
X.K. Shen, University of Nebraska-Lincoln; Lincoln NE USA
H. Ling, University of Nebraska-Lincoln; Lincoln NE USA
Y.F. Lu, University of Nebraska - Lincoln; Lincoln NE USA
Presented at ICALEO 2008
Raman spectra of the overcooled laser-induced Al plasmas have been studied using an optical parametric oscillator (OPO) wavelength-tunable laser (215-2550 nm, 6ns) as the re-exciting source. Q-switched neodymium yttrium-aluminum-garnet (Nd:YAG) laser pulses (532 nm, 6 ns) with a laser fluence of 20 J/cm2 were used to generate plasmas from an Al alloy target. The laser fluence of the OPO wavelength-tu...$28.00
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