(Видавництво Львівської політехніки, 2020-02-24) Augustin, Silke; Fröhlich, Thomas; Krapf, Gunter; Bergmann, Jean-Pierre; Grätzel, Michael; Gerken, Jan Ansgar; Schmidt, Kiril; Technical University
The exact determination of the process zone temperature can be considered as an increasingly important role in
the control and monitoring of the friction stir welding process (FSW). At present, temperature measurement is carried out with the
aid of a temperature sensor integrated into the tool (usually thermocouples). Since these cannot be attached directly to the joining
area, heat dissipation within the tool and to the environment cause measurement deviations as well as a time delay in the
temperature measurement. The article describes a process and the challenges that arise in this process, how a direct temperature
measurement during the process can be achieved by exploiting the thermoelectric effect between tool and workpiece, without
changing the tool by introducing additional temperature sensors.
