About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture
|
| Presentation Title |
Defect Categories and Fatigue Prediction in Laser Powder Bed Fusion |
| Author(s) |
Joy Gockel, Edwin Glaubitz, Jorge Ramirez Lujan, Simon Richardsen |
| On-Site Speaker (Planned) |
Joy Gockel |
| Abstract Scope |
Defects in laser powder bed fusion (PBF-LB) additive manufacturing of metals can be generated by a variety of processing anomalies. However, when to classify these anomalies as “critical defects” is currently uncertain. In this work, processing conditions are manipulated to induce anomalies such as surface instabilities, spatter, sub-surface porosity, and a witness line. In addition to the geometric defects, microstructural changes are inevitable. A predictive approach is used to relate different types of anomolies that can be generated in PBF-LB in a unified framework to determine critical dimensions of the various flaw categories, considering microstructural effects, and to compare the methods across categories of defects. The suitability of this approach to capture the effect of different flaw types and extendibility of the framework will be discussed. Understanding the influences of processing anomalies on fatigue behavior can provide the basis for necessary design guidelines around critical defects. |
| Proceedings Inclusion? |
Planned: |