Journal Article10.1080/09500340.2017.1330433
Laser effects based optimal laser parameter identifications for paint removal from metal substrate at 1064 nm: a multi-pulse model
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TL;DR: In this article, the underlying mechanisms and optimal conditions for paint removal by laser ablation are thoroughly investigated on the basis of ablation morphologies and combining experiments with numerical modeling, and the authors suggest that laser paint removal is dominated by the laser vaporization effect, thermal stress effect and laser plasma effect.
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Abstract: Paint removal by laser ablation is favoured among cleaning techniques due to its high efficiency. How to predict the optimal laser parameters without producing damage to substrate still remains challenging for accurate paint stripping. On the basis of ablation morphologies and combining experiments with numerical modelling, the underlying mechanisms and the optimal conditions for paint removal by laser ablation are thoroughly investigated. Our studies suggest that laser paint removal is dominated by the laser vaporization effect, thermal stress effect and laser plasma effect, in which thermal stress effect is the most favoured while laser plasma effect should be avoided during removal operations. Based on the thermodynamic equations, we numerically evaluated the spatial distribution of the temperature as well as thermal stress in the paint and substrate under the irradiation of laser pulse at 1064 nm. The obtained curves of the paint thickness vs. threshold fluences can provide the reference stand...
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Citations
A review of incorporating Nd:YAG laser cleaning principal in automotive industry
Mohammad Khairul Azhar Abdul Razab,An'amt Mohamed Noor,Mohamad Suhaimi Jaafar,Nor Hakimin Abdullah,Fatanah M. Suhaimi,Mazlan Mohamed,Noraina Adam,Nik Alnur Auli Nik Yusuf +7 more
TL;DR: In this article, the potential of incorporating pulsed Nd:YAG laser and its principals in coating removal for automotive industry with respect to these characteristics is discussed, such as being versatile, precise, controllable, lack of waste generation, and environmental friendly process.
85
Removal mechanism of blue paint on aluminum alloy substrate during surface cleaning using nanosecond pulsed laser
TL;DR: In this article , a nanosecond pulsed laser was used to clean polyurethane paint on Al-Mg series aluminum alloy substrate by using a nano-laser.
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Simulation of nanosecond laser cleaning the paint based on the thermal stress
TL;DR: In this article, a theoretical model of nanosecond laser peeling off the paint is developed successfully, which can predict the theoretical cleaning and damage thresholds based on the mechanism of thermal stress.
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Improved thermal stress model and its application in ultraviolet nanosecond laser cleaning of paint
TL;DR: It is indicated that thermal stress is the primary mechanism in the paint removal process by laser cleaning and successfully simulate the ultraviolet nanosecond pulsed laser cleaning by the finite element method.
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Effect of surface cold ablation on shear strength of CFRP adhesively bonded joint after UV laser treatment
TL;DR: In this article, homomorphic carbon fiber reinforced polymer (CFRP) laminates with different resins distribution on the surface are bonded into single-lap joints to evaluate the effect of surface resin distribution on bonding mechanical performance.
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