About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Poster Session
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Presentation Title |
Inspection and Detection of Porosity in Additively Manufactured Parts with Different Geometries |
Author(s) |
Sabrina D'Alesandro, Joy Gockel, Andrew Harvey |
On-Site Speaker (Planned) |
Sabrina D'Alesandro |
Abstract Scope |
Laser Powder Bed Fusion (LPBF) is an additive manufacturing process that iteratively deposits metal powder over the build plate and melts it with a laser. To make LPBF more efficient with higher quality material, an experiment was completed using in-situ monitoring sensors to observe the LPBF process as it prints nickel-based super alloy 718. The experiment was focused on observing defects in the printing process such as pores. The machine was set to print to coupons of differing geometries using the same processing parameters. The different thermal histories resulting from changing geometry for the two LPBF parts created different defect characteristics. The defects were characterized using computed tomography to understand the relationship between geometry and porosity and were related to the results of the in-situ monitoring. The implications of this research highlight the ability to monitor defects in-situ, which help ensure that future materials have a higher level of quality. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |