Laser scattering measurement for laser removal of graffiti

Watcharawee Tearasongsawat; Phumipat Kittiboonanan; Chaiya Luengviriya; Amarin Ratanavis

doi:10.1117/12.2196112

29 July 2015 Laser scattering measurement for laser removal of graffiti

Watcharawee Tearasongsawat, Phumipat Kittiboonanan, Chaiya Luengviriya, Amarin Ratanavis

Proceedings Volume 9659, International Conference on Photonics Solutions 2015; 96590T (2015) https://doi.org/10.1117/12.2196112
Event: International Conference on Photonics Solutions 2015, 2015, Hua Hin, Thailand

Abstract

In this contribution, a technical development of the laser scattering measurement for laser removal of graffiti is reported. This study concentrates on the removal of graffiti from metal surfaces. Four colored graffiti paints were applied to stainless steel samples. Cleaning efficiency was evaluated by the laser scattering system. In this study, an angular laser removal of graffiti was attempted to examine the removal process under practical conditions. A Q-switched Nd:YAG laser operating at 1.06 microns with the repetition rate of 1 Hz was used to remove graffiti from stainless steel samples. The laser fluence was investigated from 0.1 J/cm² to 7 J/cm². The laser parameters to achieve the removal effectiveness were determined by using the laser scattering system. This study strongly leads to further development of the potential online surface inspection for the removal of graffiti.

Citation Download Citation

Watcharawee Tearasongsawat, Phumipat Kittiboonanan, Chaiya Luengviriya, and Amarin Ratanavis "Laser scattering measurement for laser removal of graffiti", Proc. SPIE 9659, International Conference on Photonics Solutions 2015, 96590T (29 July 2015); https://doi.org/10.1117/12.2196112

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