About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
Investigating the Relationship Between In-Process Quality Metrics and Mechanical Response in the L-PBF Process |
Author(s) |
Bradley Jay Sampson, Courtney Morgan-Barnes, Ryan Stokes, Haley Doude, Matthew Priddy |
On-Site Speaker (Planned) |
Bradley Jay Sampson |
Abstract Scope |
Laser powder bed fusion (L-PBF) additive manufacturing is a process that utilizes a high-power laser to build near net shape parts in a layer-by-layer fashion using metal powder as the feedstock material. Traditionally, the analysis of L-PBF produced parts has relied solely on post-build characterization to understand the relationship between the printing process and the final mechanical properties. Recent developments of in-process quality assurance systems, such as Sigma Lab’s PrintRite3D, can measure in-process thermal signatures and melt pool disturbances in real-time. This research aims to examine the relationship between process parameters (e.g., scan strategy, scanning speed, and layer thickness) and in-process quality metrics (IPQMs) captured by the PrintRite3D system on a Renishaw AM400. The mechanical response of multiple part geometries (NIST residual stress bridges, single-arched bridges) and build materials (Ti-6Al-4V) includes residual stress deflection, hardness, and porosity; the results are compared with the IPQMs. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |