About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Regional Porosity Measurement in Laser Powder Bed Fusion |
Author(s) |
Henry de Winton, Richard Williams, Paul Hooper |
On-Site Speaker (Planned) |
Henry de Winton |
Abstract Scope |
High performance applications require all parts to meet rigorous quality standards. Currently this requires extensive Non-Destructive Evaluation which can cost as much as manufacturing the part itself. In-situ monitoring offers an additive manufacturing specific opportunity to reduce the costs of measuring quality. In this work we use high speed melt pool monitoring and x-ray computed tomography as validation to demonstrate state of the art porosity detection in laser powder bed fusion (POD: 0.74, PFA: 0.06) at a never-before-seen level of localisation (2mm voxels). Furthermore, we find that as localisation decreases below this level the concept of “porosity” breaks down as we approach the length scale of the pores. Our approach to quality measurement is designed to yield actionable information to aid industry in meeting quality standards required for aerospace and nuclear applications. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |