Acoustic emission as on-line tool for non-destructive inspection of welding

The main objective is to investigate and develop a non-destructive quality control for friction spot welds by using acoustic emission monitoring. The influence of several welding parameters on the acoustic emission result was investigated and a standard setup with a minimum of background noise was developed. To get a better understanding of the acoustic emission technique, a second welding technique namely MIG/MAG robotic welding was investigated.