| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
Symmetric Build Plate Deposition: A Strategy to Mitigate Solidification-Induced Residual Stresses in DED-Arc Additive Manufacturing |
| Author(s) |
Henry Claesson, Isaac Rogers, Tadek Kosmal, Christopher Williams |
| On-Site Speaker (Planned) |
Henry Claesson |
| Abstract Scope |
Directed Energy Deposition (DED-arc) additive manufacturing (AM) provides an economical approach for fabricating near-net-shaped, large metal components. Due to high-heat input and rapid solidification, DED-Arc processes can induce residual stresses during printing, which often result in build failures characterized by build plate warping and layer delamination. These failures predominantly arise from asymmetric stresses imposed on the build plate and on the part, given that only the active printing (top) surface experiences melting and solidification. To address these challenges, this study investigates residual stress propagation when parts are designed with symmetric geometric features on both sides of the build plate. Specifically, an 8-DOF multi-axis DED-arc toolpath is used to symmetrically complete the layerwise printing process; build plate strain measurements, temporal evolution of part temperature profiles, and in-situ 3D scanning of the printed part during printing are used to analyze the approach. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |