About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
In-process Multi-physical Melt Pool Characteristics Sensing and Data Correlation in Laser Powder Bed Fusion |
Author(s) |
Rongxuan Wang, David Garcia, Chaoran Dou, Bo Shen, Xiaohan Ma, Rakesh Kamath, Hahn Choo, Kamel Fezzaa, Zhenyu Kong |
On-Site Speaker (Planned) |
Rongxuan Wang |
Abstract Scope |
Laser powder bed fusion has many advantages, but it still suffers from defects such as delamination and porosities due to the lack of understanding and control of melt pool dynamics. This work integrates three advanced sensing technologies: synchrotron X-ray imaging, high-speed IR camera, and high-spatial-resolution IR camera to characterize the melt pool dynamics, vapor plume, and thermal evolution. Numerous experiments were performed at the Advanced Photon Source in Argonne national lab to test Ti-64 and 410 stainless steel samples with various processing conditions. Pre-processing methods are developed for X-ray and IR imaging. Information such as boundary velocities, melt pool dimensions, thermal gradient, and cooling rates can be extracted based on the pre-processed data. The correlation study discovers a strong relationship between the thermal and X-ray data, enabling the possibility of using relatively cheap IR cameras to predict expense information that needs to be captured using synchrotron imaging. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |