|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Applications of Solidification Fundamentals
||In-situ Observations of Trapped Gas Pore Formation via Simultaneous High Speed X-ray and Infra-red Imaging
||Benjamin Gould, Sarah Wolff, Tao Sun, Niranjan Parab, Aaron Greco, Cang Zhao
|On-Site Speaker (Planned)
Laser powder bed fusion has proven to be a promising technology with a clear future in the manufacturing sector. However, the quality and reproducibility of parts manufactured by this technique, in terms of defect concentration as well as microstructural variation, is still a problem. Overcoming this issue requires an understanding of multiple complex physical phenomena which occur simultaneously during the process. This work attempts to elucidate these numerous phenomena using synchronized high-speed X-ray imaging and high-speed infra-red imaging to study the laser powder bed fusion processes in real time. Using these combined analysis techniques, the formation and solidification of printing defects has been observed, and correlations between the presence of these defects and surface observable phenomena will be presented. Significant statistics continue to be generated surround these phenomena in the hopes of training a machine learning algorithm to detect the precise location of these defects based only on infra-red feedback.