|About this Abstract
|2023 TMS Annual Meeting & Exhibition
|Late News Poster Session
|A-75: Powder Spreading Mechanism in Laser Powder Bed Fusion Additive Manufacturing: Experiments and Computational Approach Using Discrete Element Method
|Ummay Habiba, Michael Fazzino, Serge Nakhmanson, Rainer Hebert
|On-Site Speaker (Planned)
Laser powder bed fusion (LPBF) additive manufacturing (AM) has been adopted by various industries as a novel manufacturing technology. Powder spreading is a crucial part of LPBF AM process that defines the quality of the fabricated objects. In this study, the impacts of various input parameters on the spread powder density and particle distribution during the powder spreading process are investigated using the DEM (discrete element method) simulation tool. The DEM simulations extend over several powder layers and are used to analyze the powder particle packing density variation in different layers and at different points along the longitudinal spreading direction. Additionally, this research covers experimental measurements of the density of the powder packing and the powder particle size distribution on the construction plate.