Noll, ReinhardReinhardNoll2022-03-082022-03-082000https://publica.fraunhofer.de/handle/publica/304618The method includes measuring the surface profile of a welded seam (2) as a reference and fixes reference coordinates, which are stored. The data so determined are stored, so that the welded seam to be tested, the zone of the reference coordinates is scanned with the triangulation sensor (3). The sensor is positioned on a measurement line based on the data obtained, which corresponds with a measurement line with the reference measurement. The surface profile of the welded seam to be tested is determined along at least one measurement line, which corresponds to a measurement line with the reference measurement. With an evaluation unit, the data of this surface profile are compared with the data of the surface profile obtained with the reference measurement. ADVANTAGE - Non-contact testing using laser beam. No preparation of welding seam required. Quality control, tolerance range setting and process parameters maintained and used for identification purposes.de608621patent1995-19542554