Laser-induced breakdown spectroscopy monitoring of aluminum alloys laser cleaning process

Abstract

The paper considers an approach to monitoring the condition of the treated surface in real time based on the laser-induced breakdown spectroscopy technique. As a result of the study, the aluminum alloy was cleaned from the plimer coating, spectral analysis was carried out, the relationship between the processing modes and the thickness of the coating being removed was experimentally established, which allows removing the paint coating in one pass without damaging the underlying layers. The optimal spectral range for the control operation, the contrasting spectral lines of the elements that make up the coating, the optimal parameters of laser exposure are determined based on the monitoring data of the spectral signal recorded during laser processing