Schweißnahtbewertung basierend auf 3D-Laserscanning - Praktische Anwendung eines mobilen Laserscansystems zur Oberflächenbewertung von Schweißnähten - Teil 1

Welded seam evaluation based on 3D laser scanning - Practical application of mobile laser scanning systems for surface analysis of welds - Part 1.

The visual examination of welds is a simple and frequently used method for weld inspections. Besides the comparison between a target and performance state executed by the technical staff during the production process, a final visual inspection of the welds for all execution classes is demanded by EN 1990-2. According to this code, direct or indirect methods can be applied. An example for an indirect method is the scanning of the real geometry of the weld using laser scan technology. In this paper the practical use of a mobile laser scan device is shown. Different welding methods as well as different welding positions are examined and the potential of a fully automatized (visual) inspection is exemplified. Such a procedure offers important advantages compared to a manual examination. On the one hand a high quality and most important an independent examination of the weld quality can be ensured. This data can also be used for documentation purposes and as input for a component specific fatigue life calculation. This calculation is described in part 2 of this article.