Penetration-depth control in a remote laser-welding system based on an optical triangulation loop

Remote laser-welding systems are being used more frequently because of their larger working areas, shorter downtimes and ability to weld different seam types with high accuracy at greater speeds in comparison conventional welding. Therefore, precise process-monitoring methods needed order achieve traceability good process quality control accompany welding situations. This paper proposes the use optical triangulation feedback on a remote system that makes it possible monitor area. configuration means we can interaction zone itself, analyze 3D position laser beam key estimators as result AISI steel plates were welded lap show stable partial penetration be achieved. First, dependency matrix was constructed for parameters (material thicknesses, powers) describe change weld's depth respect estimators. An approximation characterize according The experimental results demonstrate zone's area successfully laser's power output an error less than 7 % desired target depth. Longitudinal macrographies significantly constant laser-induced plume reduction during