ICALEO 2009 Paper #P126 (The Influence of Laser Pulse Shape in Repair Welding of Tool Steels)
The Influence of Laser Pulse Shape in Repair Welding of Tool Steels
Authors:
Matej Pleterski, Faculty of Mechanical Engineering, University of Ljubljana; Ljubljana Slovinia
Janez Tusek, Faculty of Mechanical Engineering, University of Ljubljana; Ljubljana Slovinia
Damjan Klobcar, Faculty of Mechanical Engineering, University of Ljubljana; Ljubljana Slovinia
Ladislav Kosec, Faculty of Natural Sciences and Engineering, University of Ljubljana; Ljubljana Slovinia
Mitja Muhic, Tkc D. O. O.; Ljubljana Slovinia
Presented at ICALEO 2009
The majority of tool steels are commonly considered as non-weldable, because of their high carbon and high alloy el...$28.00
ICALEO 2009 Paper #P127 (Structure Modification of Carbon Nanotube Powder and Film by Laser Shock Peening Process)
Structure Modification of Carbon Nanotube Powder and Film by Laser Shock Peening Process
Authors:
Liang Lv, Tsinghua University, Dept of Mechanical Engineering; Beijing Peoples Republic of China
Minlin Zhong, Tsinghua University; Beijing Peoples Republic of China
Renjie Zhu, Key Laboratory for Advanced Materials Processing Technology Ministry of Education; Beijing Peoples Republic of China
Changsheng Dong, Key Laboratory for Advanced Materials Processing Technology Ministry of Education; Beijing Peoples Republic of China
Wenjin Liu, Key Laboratory for Advanced Materials Processing Technology Ministry of Education; Beijing Peoples Republic of China
Pres...$28.00
ICALEO 2009 Paper #P128 (Fibre Laser Welding for Lightweight Design)
Fibre Laser Welding for Lightweight Design
Authors:
Jan Karlsson, Luleå University of Technology; - Sweden
Alexander Kaplan, Lulea University of Technology; Lulea Sweden
Presented at ICALEO 2009
Two different high strength steel grades have been welded by a fibre laser as a fillet corner joint. The purpose of the experiments is to use thinner materials of higher strength as a weight reduction strategy. The sensitivity of the welding process to the beam inclination angle, the beam positioning and the focal plane position were studied. High-speed imaging, process emission monitoring, measurement of the weld surface topography, mechanical testing and FE-analysis have been used to ana...$28.00
ICALEO 2009 Paper #P130 (Influences of Gap Size on the Fatigue Strength of Welded Titanium Alloy Overlap Joints)
Influences of Gap Size on the Fatigue Strength of Welded Titanium Alloy Overlap Joints
Authors:
Bing Wu, BAMTRI; - Peoples Republic of China
Shuili Gong, BAMTRI; - Peoples Republic of China
Li Chen, BAMTRI; - Peoples Republic of China
Jianxun Zhang, Xi'an Jiaotong University; - Peoples Republic of China
Presented at ICALEO 2009
In this paper, the influences of the gap size on the fatigue strength of welded titanium alloy overlap-joints are studied. A finite element model (FEM) is established to evaluate the local stress concentration of overlap joint. By employing this FE model, the effects of the gap size on the local stress concentration of overlap joint...$28.00
ICALEO 2009 Paper #P132 (Innovative Approach of Joining Hybrid Components)
Innovative Approach of Joining Hybrid Components
Authors:
Andreas Roesner, Fraunhofer ILT; Aachen Germany
Alexander Olowinsky, Fraunhofer Institute for Laser Technology; Aachen Germany
Arnold Gillner, Fraunhofer Institute for Laser Technology; Aachen Germany
Presented at ICALEO 2009
Joining of dissimilar materials is gaining importance especially in the automotive industry. The latest international initiatives concerning the average fleet CO2-emissions force the manufacturers to reduce the fuel consumption and the exhaust gas. This can mainly be achieved by the weight reduction of the vehicles. New methods for weight optimization are enabled by material selections adap...$28.00
ICALEO 2009 Paper #P133 (Comparative Study on the Application of Fiber Laser and Slab CO2 Laser in Welding DP780 High Strength Steel Plate)
Comparative Study on the Application of Fiber Laser and Slab CO2 Laser in Welding DP780 High Strength Steel Plate
Authors:
Lijun Xin, College of Laser Engineering, Beijing Univ. of Technology; Beijing Peoples Republic of China
Tao Huang, Beijing University of Technology and Baoshan Iron & Steel CO., LTD; Beijing Peoples Republic of China
Jun Shao, Beijing Univ. of Technology and IPG (Beijing) Fiber Laser Technology CO., LTD; Beijing Peoples Republic of China
Zhiyong Wang, College of Laser Engineering, Beijing Univ. of Technology; Beijing Peoples Republic of China
Presented at ICALEO 2009
Welding experiments of high strength steel plate produced by Baosteel...$28.00
ICALEO 2009 Paper #P134 (Laser Beam Welding of Experimental Trip Steels)
Laser Beam Welding of Experimental Trip Steels
Authors:
Ambroise Vandewynckèle, AIMEN; Porrino Spain
Cesar Garcia, AIMEN; Porrino Spain
Daniel Moran, AIMEN; Porrino Spain
Alvaro Prada, AIMEN; Porrino Spain
Patricia Vazquez, AIMEN; Porrino Spain
Presented at ICALEO 2009
In the last few years, the use of Advanced High Strength Steels in the automotive sector has been increasing steadily for the manufacturing of structural and safety parts. Indeed these steels make possible an improvement of passengers safety maintaining a reasonable weight. Five years ago, it was predicted that TRIP steels would be one of the most popular family of AHSS. How...$28.00
ICALEO 2009 Paper #P137 (Closed Loop Control of Laser Welding Processes Using Cellular Neural Network Cameras - Experimental Results)
Closed Loop Control of Laser Welding Processes Using Cellular Neural Network Cameras - Experimental Results
Authors:
Felix Abt, Forschungsgesellschaft Fuer Strahlwerkzeuge Fgsw; Stuttgart Germany
Andreas Blug, Fraunhofer Institute for Physical Measurement Techniques Ipm; Freiburg Germany
Leonardo Nicolosi, Iee Institut Fuer Grundlagen Der Elektrotechnik U. Elektronik; Dresden Germany
Friedrich Dausinger, Dausinger & Giesen Gmbh; Stuttgart Germany
Rudolf Weber, Institut Fuer Strahlwerkzeuge Ifsw; Stuttgart Germany
Ronald Tetzlaff, Iee Institut Fuer Grundlagen Der Elektrotechnik U. Elektronik; Dresden Germany
Daniel Carl, Fraunhofer Inst...$28.00
ICALEO 2009 Paper #P139 (Single Element Imaging Laser Homogenizer)
Single Element Imaging Laser Homogenizer
Authors:
Michael Scaggs, Neoteric Concepts; Weston FL USA
Presented at ICALEO 2009
A field mapped laser beam homogenizer has been designed which has a high degree of homogenization as a single optical element. A traditional imaging laser homogenizer incorporates a Fourier Transform lens requiring therefore a minimum of two (2) optical elements in an ideal case using gray scale lithography fabrication techniques. The single element imaging laser homogenizer is comprised of two lens arrays without a Fourier transform lens and yet yields similar performance to a traditional imaging homogenizer. In large area illumination applications which utilize an exc...$28.00
ICALEO 2009 Paper #P145 (Accelerating the Simulation of Optical Distortion Due To Atmospheric Scintillation Using Multi-Core CPUs, GPUs, Cell Broadband Engine and FPGAs)
Accelerating the Simulation of Optical Distortion Due To Atmospheric Scintillation Using Multi-Core CPUs, GPUs, Cell Broadband Engine and FPGAs
Authors:
Vinay Sriram, Imperial College London; Adelaide Australia
Oskar Mencer, Imperial College London; - Australia
David Kearney, Reconfigurable Computing Laboratory, University of South Australia; - Australia
Presented at ICALEO 2009
Fast simulation of optical distortions due to atmospheric turbulence is important for simulating adaptive optics configurations, evaluating the performance of laser designators and simulating sensor target threat engagements. The current best published algorithm by Harding et. al. requires 600 ...$28.00