The method, computer program product and device for determining a depth of penetration during laser welding

摘要

A method for determining a depth of penetration (t) during a laser - welding process and / or subsequently to a laser, - welding process of workpieces (4), comprising the steps of:two-dimensional locally resolved detection of the intensity (i) of radiation (2b), through which a liquid bath (21) and a to the liquid melt bath (21) adjoining, solidified melt (23) is emitted,Determining geometric variables (m1,.., mn) of the molten bath (21) and the solidified melt (23) on the basis of the two-dimensional in a spatially resolved manner, detected radiation intensity (i), andDetermining a parameter (k_T) for the depth of penetration (t) as a function of at least one geometric size (m1, m2) of the molten bath (21) and at least one geometric size (m3, m4) of the solidified melt (23).