About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques
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Presentation Title |
Toward Validation of Residual Stress Predictions in Additively Manufactured Parts: Destructive and Non-destructive Characterization |
Author(s) |
Kyle L. Johnson, Donald W Brown, Bjorn Clausen, Phillip A Reu, Paul A Farias, Christopher R D'Elia, Michael R Hill, Michael B Prime, Bradley H Jared, Shaun R Whetten, Joseph E Bishop |
On-Site Speaker (Planned) |
Kyle L. Johnson |
Abstract Scope |
Additive Manufacturing (AM) has many potential benefits over traditional manufacturing techniques, such as increased geometric flexibility, rapid prototyping capability, and tailored material properties. However, due to the high thermal gradients present in most AM processes, residual stresses remain a significant issue. Accurate prediction of residual stress profiles is desirable from both a qualification point of view and also to investigate opportunities such as optimized stress profiles. In order for modeling techniques to be trusted, they must be validated with experimental measurements. In this talk, results from multiple experimental methods used to examine residual stress states in as-built Directed Energy Deposition (DED) and Laser Powder Bed Fusion (LPBF) parts are presented and compared to numerical predictions. Experimental methods include non-destructive neutron diffraction as well as destructive methods such as incremental hole drilling. Strengths and weaknesses of the different approaches will also be presented and discussed. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |