|About this Abstract
|MS&T23: Materials Science & Technology
|Additive Manufacturing: Design, Materials, Manufacturing, Challenges and Applications
|Critical Comparison of Advanced Non-destructive Evaluation Technologies for Laser Powder Bed Fusion Components
|Jacque Berkson, Antonio Ramirez, Desmond Bourgeois
|On-Site Speaker (Planned)
With LPBF continuing to advance in each development and deployment, NDE of printed components is critical. This work presents a direct comparison of Micro CT and micro resolution ultrasonic imaging for LPBF materials. Common defects such as porosity, lack of fusion, and cracking are analyzed, as well as intentionally placed cavities of varying shapes and scales. Special attention is paid to the design, slicing, and fabrication of these intentional defects to represent features that may be present in LPBF components each intentionally and unintentionally. Both NDE processes are evaluated upon their ability to detect and characterize each type of defect, with further validation provided by metallographic characterization. Additionally, aspects such as material, surface roughness, entrapped powder, and part geometry are analyzed to provide comprehensive comparison between these two processes. Finally, this analysis and direct comparison is complimented by a review of state-of-the-art advancements currently being made for each technology.