| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
Non-Invasive Measurement of SS304L Powder Bed Density via Flash Thermography |
| Author(s) |
Shu Wang, Nathan B Crane |
| On-Site Speaker (Planned) |
Shu Wang |
| Abstract Scope |
In binder jetting (BJ) and powder bed fusion (PBF) processes, precise control and monitoring of powder bed density are critical for ensuring the quality and mechanical properties of the final printed parts. Traditional methods for measuring powder bed density typically require large samples and disrupt the powder layer, disrupting the building process. Flash Thermography (FT) offers significant advantages in the real-time monitoring of powder bed density without disturbing the bed. We developed and refined methodologies that enable accurate calculation of the relative density of SS304L powder resting on a metal substrate. This provides sufficient property contrast to extract powder bed density with one to two flashes. The powder bed density measurements have errors of about 5% and a coefficient of variation around 6%. This study highlights the potential of FT as a transformative tool for in-situ monitoring in PBF, paving the way for more consistent and reliable fabrication outcomes. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |