CFRP bonding pre-treatment with laser radiation of 3 µm wavelength: laser/material interaction

David Blass; Stefan Kreling; Sebastian Nyga; Thomas Westphalen; Bernd Jungbluth; Hans-Dieter Hoffman; Klaus Dilger

doi:10.1117/12.2209514

4 March 2016 CFRP bonding pre-treatment with laser radiation of 3 μm wavelength: laser/material interaction

David Blass, Stefan Kreling, Sebastian Nyga, Thomas Westphalen, Bernd Jungbluth, Hans-Dieter Hoffman, Klaus Dilger

Proceedings Volume 9736, Laser-based Micro- and Nanoprocessing X; 973614 (2016) https://doi.org/10.1117/12.2209514
Event: SPIE LASE, 2016, San Francisco, California, United States

Abstract

Laser radiation of 3 μm wavelength was generated by frequency conversion of an industrial IR laser and applied in the context of CFRP bonding pre-treatment. Reinforced and non-reinforced epoxy resins were treated with this radiation varying the relevant parameters such as laser power or treatment time. The interaction between laser radiation of 3012 nm and 1064 nm wavelength and matrix resin was analyzed mechanically (e.g. ablation depth), optically (such as fiber exposure) and chemically (e.g. contamination removal). The results gathered show that, even with the small achievable pulse fluences, a sufficient treatment of the specimens and a sensitive removing of the contaminated layers are possible.

Citation Download Citation

David Blass, Stefan Kreling, Sebastian Nyga, Thomas Westphalen, Bernd Jungbluth, Hans-Dieter Hoffman, and Klaus Dilger "CFRP bonding pre-treatment with laser radiation of 3 μm wavelength: laser/material interaction", Proc. SPIE 9736, Laser-based Micro- and Nanoprocessing X, 973614 (4 March 2016); https://doi.org/10.1117/12.2209514

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