Metal 3D printing is attracting attention as a new production technology.
<br>However, various problems need to be solved regarding it. In particular, defects occurring in the process of melting and solidification are relatively serious than those occurring in the traditional casting or cutting process. To solve this problem, this study introduced a tomography using a high-speed camera that can monitor the melting pool. This confirmed the possibility of finding defects by detecting an abnormality in the melting pool. In addition, if it is combined with the YOLO model, which is the latest object detection algorithm, it is judged that the integrity of the parts produced by the casting or cutting process can be secured by stopping or recovering the process through real-time inspection.
