| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Quantification of Residual Stress in Directed Energy Deposition Additive Manufacturing via Bridge Method |
| Author(s) |
Joshua k. Taggart-Scarff, Stephen Cluff, Clara Mock, Brandon McWilliams |
| On-Site Speaker (Planned) |
Joshua k. Taggart-Scarff |
| Abstract Scope |
Residual stress buildup in additively manufactured parts can result in cracks, part delamination, and other warpage in the final part. Current methods of evaluating residual stress in directed energy deposition (DED) additively manufactured parts are either non-quantitative or are complex, expensive, and time consuming. Quantification of residual stress in additively manufactured parts is key to validating models that accurately predict the effects of processing parameters on mechanical properties and part geometry. Bridge structures were built via DED using three different hatch-fill strategies. After completion of the build, a section of the bridge feet was removed creating a cantilever beam section. The deflection of the cantilever beam section was measured using a coordinate measuring machine and compared to the predictions of a fast part-scale residual stress model. The method developed can lead to more efficient predictions of residual stress formation for DED additively manufactured parts. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |