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 |
Impacts of Sharpened Corner Path Geometry on Layer Topology in Wire Arc Additive Manufacturing |
Author(s) |
Harold A. Walters, Lai Canhai, Andrzej Nycz, Mark Noakes, Joshua Vaughan, Chris Masuo, Derek Vaughan, Luke Meyer, William Carter, Riley Wallace |
On-Site Speaker (Planned) |
Harold A. Walters |
Abstract Scope |
In wire arc additive manufacturing, adjacent weld beads typically use a constant offset between the bead centerlines. This can lead to material-filling issues when printing corner geometries with acute angles due to the tool path being restricted from reaching points of interior corners. Issues such as voids and uneven layer height compound on consecutively printed layer cross sections, resulting in increasingly undesired layer topologies. These effects can be mitigated by manipulating the bead geometry to move interior corner points closer to exterior corner points, “corner sharpening”; thus, closing the gap but also deviating from the standard constant offset at the tip of the interior corners. This work explores the experimental effects of utilizing different cases of sharpened corner geometries to address this issue and focuses on the topological results. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |