Defect elimination on laser milled geometries by means of error detection and correction

The present paper exposes the work carried out on the correction of geometrical errors generated during the ultra-short pulse laser ablation of AISI 304 stainless steel and yttria-stabilized zirconia. After the introduction of the error detection and correction methodology to be followed after the laser milling of a key geometrical feature, the different procedures for the experimental implementation of the methodology are detailed. Finally, after the application of the methodology to an artificially defective geometry on both analysed materials, the obtained results are exposed and discussed. The results show that the error detection methodology is able to properly identify defective zones and define a laser milling process for their correction, generating this way a geometry within the required geometrical tolerances in comparison to the desired one.