Estimation of heat accumulation during ultrafast laser ablationFriday (26.06.2020) 10:50 - 11:10 Room 2
It has been demonstrated in the past years that ultrafast lasers are excellent tools for materials micromachining. The ablation results obtained depend on both the processing parameters and the material properties. The resulting thermal effects can be negligible only if a good combination of processing parameters is chosen. Consequently, optimizing the processing parameters that lead to the required surface quality on a given material can be rather complex and time consuming. To enhance this parameters research, we developed a model to estimate the heat accumulation on a surface ablated with a certain laser fluence, scanning speed and line pitch. The simulation results were correlated with experimental ones on stainless steel. The results show that the heat distribution is not homogeneous all over the surface and strongly depends on the laser processing parameters and thermal properties of the material. The predictions of the model allow optimizing the micromachining process yielding negligible thermal damage, both energy and time wise.
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