Abstract
A developed 2D finite element model to describe temperature distribution, stress distribution, and ablation depth by ultraviolet nanosecond (ns) pulsed laser cleaning is presented. In this paper, we indicate that thermal stress is the primary mechanism in the paint removal process by laser cleaning and successfully simulate the ultraviolet nanosecond (ns) pulsed laser cleaning by the finite element method. Notably, the formation of plasma, plasma shielding effect on the incident laser fluence, temperature-dependent absorptivity, and absorption coefficient of the paint layer are crucial factors considered in this model. In addition, the tailored model can predict theoretical cleaning of thresholds based on the mechanism of thermal stress. According to the temperature, stress distribution, and cleaning depth in paint and substrate at various laser fluence in this model, the corresponding cleaning threshold is 7J/cm2 in theory. In a word, it is expected that this study could provide a theoretical reference regarding laser cleaning paint layers and pave the way for reducing substrate damage in various industrial applications.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
