| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Large-scale Metallic Components
|
| Presentation Title |
High-Throughput, Force-Based Measurements of Residual Stress and Comparison to Numerical Predictions |
| Author(s) |
Kyle L. Johnson, Dale Cillessen |
| On-Site Speaker (Planned) |
Kyle L. Johnson |
| Abstract Scope |
Accurate simulation of residual stress in Additive Manufacturing (AM) is necessary to properly optimize processing conditions and predict part performance in subsequent environments. Development of predictive models requires experimental measurement of residual stress for calibration and validation. These measurements typically consist of either diffraction- or relaxation-based methods. Diffraction-based methods can offer high resolution and accuracy at high cost. Relaxation-based methods offer lower cost, though this can come at the expense of resolution. Both classes of methods depend on a measure of strain or displacement. Here we present a novel method that offers high throughput and a direct force measurement caused by residual stress. The method is demonstrated on a range of AM Kovar builds with varying process parameters. The resulting force measurements are then directly compared to numerical predictions. The method is also compared to a traditional relaxation-based method on the same part, and advantages and limitations are discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Modeling and Simulation, |