About this Abstract |
| Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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| Symposium
|
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
| Presentation Title |
Fundamental Mechanisms and Practical Applications of Airborne Acoustic Emission in LPBF AM |
| Author(s) |
Haolin Liu, Kiana Naghibzadeh, Zhongshu Ren, Xuzhe Zeng, Jiayun Shao, Tao Sun, Anthony Rollett, Levent Burak Kara |
| On-Site Speaker (Planned) |
Haolin Liu |
| Abstract Scope |
This work aims to develop a theoretical framework from first principles, specifically the keyhole state and oscillation equation, to elucidate the fundamental physical mechanisms governing the laser-metal interaction process in the presence of a keyhole, whether stable or unstable. We propose that this theory not only demonstrates the feasibility of using time-series modalities—such as airborne acoustic emissions, photodiode signals, and thermal camera imaging—to infer and capture costly process information, but also explains the applications of cost-effective monitoring modalities from previous work. Furthermore, this investigation contributes both to advancing scientific understanding of the complex laser-metal interaction process and to exploring its potential application space in practical manufacturing settings. |
| Proceedings Inclusion? |
Planned: Post-meeting proceedings |