| Abstract Scope |
This paper proposes a wireless friction stir welding (FSW) tool temperature measurement method, FSW process 13 window, and control strategy based on the FSW tool temperature profiles. Tool temperature is important data for 14 FSW process monitoring, optimization, and control because it includes detailed information on the actual FSW 15 process condition where the tool induces frictional heat, softening, and stirring the workpiece material. 16 Conventionally, thermocouples installed at workpieces or thermal imaging, which are indirect measurements have 17 measured temperature data in the FSW process. The proposed wireless FSW tool temperature measurement 18 system consists of a thermocouple-integrated FSW tool, data measurement, wireless data transmission modules 19 based on widely used Internet of Things (IoT) devices, and a conventional tool holder. The developed system 20 reliably measures multiple temperature channels at a high sampling rate in real time. |