M. Schmidt, M. F. Zaeh, T. Graf, A. Ostendorf LiM - Lasers in Manufacturing 2011 Part 1 Proceedings of the Sixth International WLT Conference on Lasers in Manufacturing Munich, Germany May 23-26, 2011
LiM - Lasers in Manufacturing 2011 Proceedings of the Sixth International WLT Conference on Lasers in Manufacturing Munich, Germany May 23-26, 2011 Edited by M. Schmidt, M. F. Zaeh, T. Graf, A. Ostendorf for the German Scientific Laser Society (WLT) Part 1 Elsevier B.V. Amsterdam 2011
Proceedings of the Sixth International WLT Conference on Lasers in Manufacturing Munich, Germany, May 23-26, 2011 Edited by M. Schmidt, M. F. Zaeh, T. Graf, A. Ostendorf for the German Scientific Laser Society (WLT) Amsterdam: Elsevier B.V., 2011 ISSN of Physics Procedia: 1875-3892 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically those of translation, reprinting, reuse of illustrations, broadcasting, reproduction by photocopying machine or similar means and storage in data banks. Under 54 of the German Copyright Law, where copies are made for other than private use, a fee is payable to Verwertungsgesellschaft Wort, Munich. Elsevier B.V., Radarweg 29, 1043 NX Amsterdam, The Netherlands Copyright by M. Schmidt, M. F. Zaeh, T. Graf, A. Ostendorf, Germany, 2011 The use of registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevance of protective laws and regulations and therefore free for general use. Layout: Institute for Machine Tools and Industrial Management (Technische Universität München), Bayerisches Laserzentrum GmbH Print: Elsevier B.V., Radarweg 29, 1043 NX Amsterdam, The Netherlands
Preface The current global interest is strongly affected by social, economical and environmental trends of the last decades such as globalisation, global warming, shortage of energy resources or even the financial crisis. Modern research has to focus on these trends to provide solutions for the existing and upcoming global challenges. Sustainable manufacturing is one of the current challenges in our discipline. Therefore, an efficient and resource-saving application of laser technologies in production has to be advanced. An enduring professional exchange between scientists from all over the world is necessary to tap the full potential in research. With the international conference on Lasers in Manufacturing (LiM), the German Scientific Laser Society (WLT) offers an open platform for such an international professional exchange in the field of laser material processing. Thus, we warmly welcome all our participants and look forward to share ideas in motivated talks and lively discussions. Besides the scientific exchange the LiM conference supports the direct knowledge transfer of experts from research and industry and vice versa. This guarantees mutual benefit, since scientific advances and economical needs are complied. Therefore, we pursued the strategy to hold LiM with scientific and industrial contributions. In these proceedings, as well as online on Elsevier's Physics Procedia, only the scientific contributions, that met the high standard of the scientific committee's review process, are provided. The industrial contributions, which are not evaluated based on scientific criteria but on their relevance for application, will be presented vocally at the LiM conference. The audience is invited to explore the vast field of laser material processing from a scientific but also from an industrial point of view. We hope that these proceedings, reflecting the state of the art, provide a precious basis and source for inspirations to meet the challenges we are facing in the future. Munich, May 2011 The Editors M. Schmidt M. F. Zaeh T. Graf A. Ostendorf
International Scientific Committee Arnold, C., Princeton University, New Jersey, USA Aubry, P., Arts et Métiers ParisTech, Paris, France Bergmann, R., BIAS, Bremen, Germany Beyer, E., Fraunhofer IWS, Dresden, Germany Emmelmann, C., Technische Universität Hamburg-Harburg, Germany Fabbro, R., Coopération Laser Franco-Allemande, Paris, France Geiger, M., Bayerisches Laserzentrum, Erlangen, Germany Goch, G., University of Bremen, Germany Hilton, P., The Welding Institute, Cambridge, UK Hügel, H., University of Stuttgart, Germany Hugenschmidt, M., ISL, Saint-Louis, France Huis in `t Veld, A. J., University of Twente, The Netherlands Jüptner, W., University of Aberdeen, UK Kaplan, A., Luleå University of Technology, Sweden Katayama, S., Osaka University, Japan Klocke, F., Fraunhofer IPT, Aachen, Germany Konov, V. I., Russian Academy of Sciences, Moscow, Russia Leipertz, A., University of Erlangen-Nürnberg, Germany Levy, G. N., inspire AG, St. Gallen, Switzerland Loosen, P., RWTH Aachen, Germany Miyamoto, I., Osaka University, Japan Neuenschwander, B., Swisslaser Net, Switzerland Osten, W., University of Stuttgart, Germany Overmeyer, L., Laser Zentrum Hannover, Germany Pfeifer, T., RWTH Aachen, Germany Piqué, A., Naval Research Laboratory, Washington, USA Poprawe, R., Fraunhofer ILT, Aachen, Germany Romano, V., University of Bern, Switzerland Schmitt, R., RWTH Aachen, Germany Sugioka, K., RIKEN, Wako, Japan Tiziani, H. J., University of Stuttgart, Germany Vollertsen, F., BIAS, Bremen, Germany Weingärtner, W., University of Santa Catarina, Brazil
Chairmen & Conference Offices General Chair M. Schmidt, University of Erlangen-Nürnberg, Germany Chair Subconference Macro Processing M. F. Zaeh, Technische Universität München, Germany Chair Subconference Micro Processing T. Graf, University of Stuttgart, Germany Chair Joint Sessions with ECLEO (for LiM) A. Ostendorf, Ruhr-Universität Bochum, Germany Office General Chair H.-J. Krauß, Bayerisches Laserzentrum GmbH, Germany C. Brock, University of Erlangen-Nürnberg, Germany S. Eckert, Bayerisches Laserzentrum GmbH, Germany Office WLT R. Wiedenmann, Technische Universität München, Germany LiM 2011 is organized by the German Scientific Laser Society (WLT) in cooperation with the Bayerisches Laserzentrum GmbH (blz) and the Chair of Photonic Technologies, University of Erlangen-Nürnberg (LPT) We wish to sincerely thank Messe München GmbH and our partners