About this Abstract |
Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Symposium
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2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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Presentation Title |
Experimental Validation of FE Substrate Deflection Predictions in Wire-Arc DED Using Strain Gauges and Laser Displacement Sensors |
Author(s) |
Reid Schaff, Ally Cummings, Charlotte Thompson, Jeffery Logan Betts, Matthew Priddy |
On-Site Speaker (Planned) |
Reid Schaff |
Abstract Scope |
Substrate deflection plays a significant role in the successful production of wire arc directed energy deposition (DED) parts, as it can affect both geometric accuracy and fixturing reliability. Through the intense heat cycling of the material, residual stresses in the part and substrate are formed. This study seeks to validate deflection in finite element thermo-mechanical models by comparing simulation predictions with experimental deflection data. A multi-layer, single bead thin wall of ER70S-6 is deposited along the unsupported span of a cantilevered substrate. Strain gauges mounted on the underside of the substrate and a laser displacement sensor at the free end are implemented to quantify strain and displacement, respectively. Preliminary simulations predict the substrate to have a maximum deflection of 3-5 mm. These experiments enable more efficient process development by offering cost effective ways to validate computational models and provide insight into residual stress formation within wire-arc DED. |
Proceedings Inclusion? |
Planned: Post-meeting proceedings |