Research on multi-physics field characteristics of the single-pulse top-hat laser cleaning CFRP
In order toinvestigate the mechanism of top-hat laser cleaning of carbon fiber reinforced composite(CFRP),considering the significant differences in the absorption and reflection characteristics of the components of CFRP,the laser load is layered to the meso-finite element model of CFRP.The dual effect of thermal ablation and thermal stress is introduced to restore the morphology of single-pulse flat-top laser cleaning at different energy densi-ties,and to complete the experimental validation.The results show that the layered application of laser load can effec-tively improve the simulation accuracy compared with the traditional surface loading mode,and the dual criterion of thermal ablation-thermal stress can further improve the morphology reduction effect.The long-axis accuracy of the sim-ulated topography of this model is not less than 96.64％,and the area accuracy reaches 80.00％.Therefore,the in-stantaneous temperature field distribution of high-precision models can guide the actual process of laser cleaning of CFRP surface resin.
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