About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Presentation Title |
Size Effect on Porosity of Thin Struts Fabricated by Laser Powder-Bed Fusion (L-PBF) |
Author(s) |
Nismath Valiyakath Vadakkan Habeeb, David Jaggers, Kevin Chou |
On-Site Speaker (Planned) |
Nismath Valiyakath Vadakkan Habeeb |
Abstract Scope |
The melt pool fluctuations under constantly changing physical phenomena cause porosity defects in the L-PBF parts. Melt pool variations across different layers depend largely on the process parameters. Scan length is one of the significant factors affecting the melt pool geometry. The melt pool fails to reach a quasi-steady state at shorter scan lengths. Hence, thin features made of shorter scan lengths of dimensions 2 mm or less show distinctive characteristics compared to bulk-sized components. Considering its wide range of applications, especially in biomedical industries, an in-depth investigation of thin features is essential. This study aims to analyze the porosity characteristics of thin struts fabricated via L-PBF process. The thin struts of different sizes and shapes were printed using Ti6Al4V powder at various processing conditions. The porosity and dimensional accuracy were characterized by using a micro-CT scanner and the results were evaluated using various 2D and 3D image analysis tools. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |