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Journal of Ceramic Science and Technology

The Journal of Ceramic Science and Technology publishes original scientific articles on all topics of ceramic science and technology from all ceramic branches. The focus is on the scientific exploration of  the relationships between processing, microstructure and properties of sintered ceramic materials as well as on new processing routes for innovative ceramic materials. The papers may have either theoretical or experimental background. A high quality of publications will be guaranteed by a thorough double blind peer review process.

The Journal is published by Göller Verlag GmbH on behalf of the Deutsche Keramische Gesellschaft (DKG). Edited by Yu-Ping Zeng, Shanghai Institute of Ceramics, Chinese Academy of Sciences, China.

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Experimental and Numerical Investigations of Laser Beam Polishing of Quartz Glass Surfaces

J. Hildebrand1, B. Wittor1, K. Hecht2, J. Bliedtner2, H. Müller3

1 Bauhaus University of Weimar, Faculty of Civil Engineering, Marienstrasse 7A, 99423 Weimar, Germany
2 University of Applied Sciences Jena – Department SciTec, Carl-Zeiss-Promenade 2, 07745 Jena, Germany
3 Günter-Köhler-Institut für Fügetechnik und Werkstoffprüfung GmbH, Otto-Schott-Str. 13, 07745 Jena, Germany

received July 30, 2012, received in revised form January 15, 2013, accepted January 28, 2013

Vol. 4, No. 1, Pages 25-32   DOI: 10.4416/JCST2012-00027

Abstract

The aim of laser beam polishing is to achieve an even surface finish in the shortest possible time without changing the contour of the material. Laser radiation acts as a topology-independent sub-aperture tool. Analyses of influences on the process, interaction between laser radiation and the quartz glass as well as comprehensive evaluation of the results with regard to surface quality, and manipulation of tensions and mechanical properties support the development of an industrially applicable laser polishing technology.

The polishing process was investigated with the commercial FE-software SYSWELD for calculation of the time- and location-dependence of temperature and stress distribution in the plate. The application of the laser beam polishing process requires extensive adaptation of the material models used. The application of simulation is suitable to optimize the process parameters of the targeted temperature and residual stress state.

The design, execution and evaluation of the experiments for laser beam polishing are performed with the help of statistical methods. These show that power and persistence (i.e. dwell time) are the most significant factors. Temperature, as one of the main parameters, is measured accurately either punctually or linearly with a pyrometer and two-dimensionally with an infrared camera. In a defined temperature range a polishing process without stock removal is achievable.

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Keywords

Laser beam polishing, stock removal, roughness, numerical simulation, sensitivity

References

1 Hohmann, R., Setzer, M.J.: Building physics formulas and tables, (in German), 3rd edition, Werner-Verlag, Düsseldorf, 1997.

2 Brückner, R.: O.V. Mazurin et. al. In: Handbook of glass data, Part A: Silica glass and binary non silicate oxide glasses. Elsevier, Amsterdam, 1983.

3 Sosmann, R. B.: Bansal, N.P. In: Handbook of glass properties. Academic Press. Inc., Orlando, Florida, 1986.

4 Lucks, D. In: Handbook of glass data. Part A: Silica glass and binary non silicate oxide glasses. Elsevier, Amsterdam, 1983.

5 Men, Ch.: In: Handbook of glass data. Part A: Silica glass and binary non silicate oxide glasses. Elsevier, 1983.

6 Hildebrand, J., Göbel, M., Wittor, B., Werner, F.: Welding and cutting of glass with a laser beam – the potential of numerical simulation, (in German). In: Proceedings of SYSWELD Forum 2009, Weimar, 115 – 129, (2009).

7 Göbel, M., Hildebrand, J., Werner, F.: Advantages of FE-simulation for the development of a welding procedure for quartz glass. In: Proceedings of Glass Performance Days 2007, Tampere, Finland, 733 – 737, (2007).

8 Hildebrand, J.: Numerical welding simulation – determination of temperature, microstructure and residual stress in welded joints of steel and glass materials, (in German). Verlag der Bauhaus-Universität Weimar, 2009.

9 Hildebrand, J., Hecht, K., Bliedtner, J., Müller, H.: Laser beam polishing of quartz glass surfaces, Physics Procedia, 12, 452 – 461, (2011).

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