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Advanced Optical Technologies

Editor-in-Chief: Pfeffer, Michael


CiteScore 2018: 1.42

SCImago Journal Rank (SJR) 2018: 0.499
Source Normalized Impact per Paper (SNIP) 2018: 1.346

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2192-8584
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Volume 7, Issue 3

Issues

Residual heat generated during laser processing of CFRP with picosecond laser pulses

Christian Freitag
  • Corresponding author
  • Institut für Strahlwerkzeuge (IFSW), Universität Stuttgart, Pfaffenwaldring 43, 70569 Stuttgart, Germany
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/ Leon Pauly
  • Institut für Strahlwerkzeuge (IFSW), Universität Stuttgart, Pfaffenwaldring 43, 70569 Stuttgart, Germany
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/ Daniel J. Förster
  • Institut für Strahlwerkzeuge (IFSW), Universität Stuttgart, Pfaffenwaldring 43, 70569 Stuttgart, Germany
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/ Margit Wiedenmann
  • Institut für Strahlwerkzeuge (IFSW), Universität Stuttgart, Pfaffenwaldring 43, 70569 Stuttgart, Germany
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/ Rudolf Weber
  • Institut für Strahlwerkzeuge (IFSW), Universität Stuttgart, Pfaffenwaldring 43, 70569 Stuttgart, Germany
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/ Taras V. Kononenko
  • Natural Sciences Center, General Physics Institute, Vavilov Str. 38, 119991 Moscow, Russia
  • National Research Nuclear University “MEPhI”, Kashirskoye shosse 31, 115409 Moscow, Russia
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/ Vitaly I. Konov
  • Natural Sciences Center, General Physics Institute, Vavilov Str. 38, 119991 Moscow, Russia
  • National Research Nuclear University “MEPhI”, Kashirskoye shosse 31, 115409 Moscow, Russia
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/ Thomas Graf
  • Institut für Strahlwerkzeuge (IFSW), Universität Stuttgart, Pfaffenwaldring 43, 70569 Stuttgart, Germany
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  • De Gruyter OnlineGoogle Scholar
Published Online: 2018-03-06 | DOI: https://doi.org/10.1515/aot-2018-0001

Abstract

One of the major reasons for the formation of a heat-affected zone during laser processing of carbon fiber-reinforced plastics (CFRP) with repetitive picosecond (ps) laser pulses is heat accumulation. A fraction of every laser pulse is left as what we termed residual heat in the material also after the completed ablation process and leads to a gradual temperature increase in the processed workpiece. If the time between two consecutive pulses is too short to allow for a sufficient cooling of the material in the interaction zone, the resulting temperature can finally exceed a critical temperature and lead to the formation of a heat-affected zone. This accumulation effect depends on the amount of energy per laser pulse that is left in the material as residual heat. Which fraction of the incident pulse energy is left as residual heat in the workpiece depends on the laser and process parameters, the material properties, and the geometry of the interaction zone, but the influence of the individual quantities at the present state of knowledge is not known precisely due to the lack of comprehensive theoretical models. With the present study, we, therefore, experimentally determined the amount of residual heat by means of calorimetry. We investigated the dependence of the residual heat on the fluence, the pulse overlap, and the depth of laser-generated grooves in CRFP. As expected, the residual heat was found to increase with increasing groove depth. This increase occurs due to an indirect heating of the kerf walls by the ablation plasma and the change in the absorbed laser fluence caused by the altered geometry of the generated structures.

Keywords: calorimetry; carbon fiber-reinforced plastics; CFRP; laser processing; residual heat

References

  • [1]

    C. Freitag, V. Onuseit, R. Weber and T. Graf, Phys. Procedia 39, 171 (2012).CrossrefGoogle Scholar

  • [2]

    T. V. Kononenko, C. Freitag, M. S. Komlenok, V. Onuseit, R. Weber, et al., J. Appl. Phys. 115, 103107 (2014).CrossrefGoogle Scholar

  • [3]

    C. T. Pan and H. Hocheng, J. Mater. Process. Technol. 62, 54 (1996).CrossrefGoogle Scholar

  • [4]

    C. T. Pan and H. Hocheng, J. Mater. Eng. Perform. 7, 751 (1998).CrossrefGoogle Scholar

  • [5]

    E. Uhlmann, G. Spur, H. Hocheng, H. S. Liebelt and C. T. Pan, Int. J. Mach. Tool. Manuf. 39, 639 (1999).CrossrefGoogle Scholar

  • [6]

    C. T. Pan and H. Hocheng, Compos. Part A Appl. Sci. Manuf. 32, 1657 (2001).CrossrefGoogle Scholar

  • [7]

    C. Pradere, J. C. Batsale, J. M. Goyhénèche, R. Pailler and S. Dilhaire, Carbon 47, 737 (2009).CrossrefGoogle Scholar

  • [8]

    S. D. McIvor, M. I. Darby, G. H. Wostenholm, B. Yates, L. Banfield, et al., J. Mater. Sci. 25, 3127 (1990).CrossrefGoogle Scholar

  • [9]

    R. Rolfes and U. Hammerschmidt, Compos. Sci. Technol. 54, 45 (1995).CrossrefGoogle Scholar

  • [10]

    P. Sheng and G. Chryssolouris, J. Compos. Mater. 29, 96 (1995).CrossrefGoogle Scholar

  • [11]

    Y. Zhang, J. R. G. Evans and S. Yang, J. Chem. Eng. Data 56, 328 (2011).CrossrefGoogle Scholar

  • [12]

    G. Herzberg, K. F. Herzfeld and E. Teller, J. Phys. Chem.-US 41, 325 (1937).CrossrefGoogle Scholar

  • [13]

    C. A. Griffs, R. A. Masumura and C. I. Chang, J. Compos. Mater. 15, 427 (1981).CrossrefGoogle Scholar

  • [14]

    R. Weber, M. Hafner, A. Michalowksi and T. Graf, Phys. Procedia 12, 302 (2011).CrossrefGoogle Scholar

  • [15]

    C. Freitag, M. Wiedenmann, J.-P. Negel, A. Loescher, V. Onuseit, et al., Appl. Phys. A Mater. 119, 1237 (2015).CrossrefGoogle Scholar

  • [16]

    A. Wolynski, H. Haloui, P. Mucha, A. Gleiter, P. French, et al., in ‘Proceedings of International Congress on Applications of Lasers & Electro-Optics ICALEO 2010’, (Anaheim, USA, 26 September–30 September 2010).Google Scholar

  • [17]

    A. Wolynski, T. Herrmann, P. Mucha, H. Haloui and J. L’huillier, Phys. Procedia 12B, 292 (2011).Google Scholar

  • [18]

    R. Weber, C. Freitag, T. V. Kononenko, M. Hafner, V. Onuseit, et al., Phys. Procedia 39, 137 (2012).CrossrefGoogle Scholar

  • [19]

    T. Herrmann, M. Stolze and J. L’huillier, Proc. SPIE 8972, 89721K (2014).CrossrefGoogle Scholar

  • [20]

    M. Fujita, H. Ohkawa, M. Otsuka, T. Somekawa, Y. Maeda, et al., in ‘Proceedings of International Congress on Applications of Lasers & Electro-Optics ICALEO 2014’, (San Diego, USA, 19 October–23 October 2014).Google Scholar

  • [21]

    T. V. Kononenko, C. Freitag, M. S. Komlenok, V. Onuseit, R. Weber, et al., J. Appl. Phys. 118, 103105 (2015).CrossrefGoogle Scholar

  • [22]

    R. Weber, T. Graf, P. Berger, V. Onuseit, M. Wiedenmann, et al., Opt. Express 22, 11312 (2014).CrossrefGoogle Scholar

  • [23]

    F. Bauer, A. Michalowski and S. Nolte, J. Laser Micro Nanoen. 10, 325 (2015).CrossrefGoogle Scholar

  • [24]

    A. Y. Vorobyev and C. Guo, Opt. Express 14, 13113 (2006).CrossrefGoogle Scholar

  • [25]

    A. Y. Vorobyev, V. M. Kuzmichev, N. G. Kokody, P. Kohns, J. Dai, et al., Appl. Phys. A 82, 357 (2006).CrossrefGoogle Scholar

  • [26]

    B. Sundqvist, O. Sandberg and G. Bäckström, J. Phys. D Appl. Phys. 10, 1397 (1977).CrossrefGoogle Scholar

  • [27]

    B. T. Kelly, in ‘Physics of Graphite’, (Applied Science Publishers, London and New Jersey, 1981).Google Scholar

  • [28]

    C. Freitag, L. Alter, R. Weber and T. Graf, in ‘Proc. of Lasers in Manufacturing 2015’, (München, Germany, 2015).Google Scholar

  • [29]

    A. Gouffé, Revue d’Optique 24, 1 (1945).Google Scholar

About the article

Received: 2018-01-03

Accepted: 2018-02-13

Published Online: 2018-03-06

Published in Print: 2018-05-24


Citation Information: Advanced Optical Technologies, Volume 7, Issue 3, Pages 157–163, ISSN (Online) 2192-8584, ISSN (Print) 2192-8576, DOI: https://doi.org/10.1515/aot-2018-0001.

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