| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Influence of In-process Layer-wise Surface Property on the Mechanical Properties of Laser Powder Bed Fusion Products |
| Author(s) |
Haolin Zhang, Heyang Zhang, Alexander Caputo, Chaitanya Krishna Prasad Vallabh, Richard Neu, Xiayun Zhao |
| On-Site Speaker (Planned) |
Haolin Zhang |
| Abstract Scope |
Laser powder bed fusion (LPBF) additive manufacturing has the potential of efficiently producing components with high resolution and complex geometry. However, during LPBF the as-manufactured layers usually possess rough surfaces that lead to porosity formation and unsatisfactory mechanical properties, necessitating extensive post-processing prior to being deployed for practical applications. Fringe projection profilometry (FPP) is a cost-effective, non-invasive technology that has been developed for in-situ LPBF surface measurement. In this work, we first develop a FPP measurement data analytics framework to extract in-process layer surface features, which can serve as implications of potential defects that could be caused by spatters, balling, or shrinkage. Then, we conduct different regression analyses to correlate the inferred layer-wise surface defects and the FPP-measured thickness profiles with the ex-situ characterized part properties including hardness, fatigue life, and critical crack locations. The proposed FPP-based framework can help optimize or control LPBF processes for achieving improved mechanical properties. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |