Investigation of the directional characteristics of the emitted airborne sound by Friction Stir Welding for online process monitoring

FSW (Friction Stir Welding) is a solid-state technology mainly used for joining of aluminum alloys. The aim of the presented topic is to detect weld seam irregularities during the welding process by using signals from the joining process or the welding setup (e.g. mechanical loads, forces, torque, spindle motor current Temperature, vibrations as well as audio signals).