Surface treatment of CFRP composites using femtosecond laser radiation

• Type: Article in International Scientific Journal
• Date: 2017

Authors

de Moura, MFSF (Author) FEUP; V. Oliveira (Author) Other; S. P. Sharma (Author) Other; R. D. F. Moreira (Author) FEUP; R. Vilar (Author) Other

Journal

Title: Optics and Lasers in Engineering

Vol. 94

Pages: 37-43

ISSN: 0143-8166

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 15 Citations

Scopus - 55 Citations

Scientific classification

CORDIS: Technological sciences > Engineering > Mechanical engineering

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-00M-GV7

DOI: 10.1016/j.optlaseng.2017.02.011

Abstract (EN): In the present work, we investigate the surface treatment of carbon fiber-reinforced polymer (CFRP) composites by laser ablation with femtosecond laser radiation. For this purpose, unidirectional carbon fiber-reinforced epoxy matrix composites were treated with femtosecond laser pulses of 1024 nm wavelength and 550 fs duration. Laser tracks were inscribed on the material surface using pulse energies and scanning speeds in the range 0.1-0.5 mJ and 0.1-5 mm/s, respectively. The morphology of the laser treated surfaces was investigated by field emission scanning electron microscopy. We show that, by using the appropriate processing parameters, a selective removal of the epoxy resin can be achieved, leaving the carbon fibers exposed. In addition, sub-micron laser induced periodic surface structures (LIPSS) are created on the carbon fibers surface, which may be potentially beneficial for the improvement of the fiber to matrix adhesion in adhesive bonds between CFRP parts.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7