About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Special Session
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Presentation Title |
Abrasive Flow Machining of Additively Manufactured Titanium: Thin Walls and Internal Channels |
Author(s) |
Sagar Sandip Jalui, Todd J Spurgeon, Erik Jacobs, Arnab Chatterjee, Timothy Stecko, Guhaprasanna Manogharan |
On-Site Speaker (Planned) |
Sagar Sandip Jalui |
Abstract Scope |
Metal additive manufacturing using Laser-Powder Bed Fusion (L-PBF) technique has enabled the metal manufacturing industry to use design tools with increased flexibility such as freeform internal channel geometries that benefit thermofluidic applications such as heat exchangers. A primary drawback of the L-PBF process is the as-built surface roughness, which is a critical factor in such surface-fluidic applications. In addition, complex internal channel geometries cannot be post-processed through traditional finishing and polishing methods, and require advanced finishing processes such as Abrasive Flow Machining (AFM). In this original study, the effects of AM design including geometrical changes at the inlets, internal channel and wall thickness of thin features are experimentally studied on Ti64 L-PBF parts. A novel surface roughness inspection technique using micro-CT data is also presented. A detailed statistical analysis is provided to better understand the relationship between AM design, AFM processing and final surface finish. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |