| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Equipment, Instrumentation and In-Situ Process Monitoring
|
| Presentation Title |
Process Informed Surface Topography Measurements for Thermal-Based Over Melting Prediction |
| Author(s) |
Jesse Redford, Jason Fox, Chris Evans |
| On-Site Speaker (Planned) |
Jesse Redford |
| Abstract Scope |
Laser Powder Bed Fusion (LPBF) additive manufacturing requires precise control of local melting conditions and the consistency of fused layers. This study uses bright field imaging and coherence scanning interferometry to characterize the topography of solidified melt pools, providing insights into how local thermal conditions affect melt pool morphology and fused layer quality. A new measurement technique is introduced to isolate and characterize solidified melt pool topography that exceed the nominal programmed layer thickness. The combination of measurement results and process information is used to establish a critical track-to-track cooling constant that directly correlates off-nominal topographic features with local scanning conditions. Examples show how this new approach to surface measurement and parameterization of LPBF scan strategies enables preemptive identification and mitigation of systemic over melting issues during fabrication of IN625. |