About this Abstract |
Meeting |
TMS Specialty Congress 2024
|
Symposium
|
2nd World Congress on Artificial Intelligence in Materials & Manufacturing (AIM 2024)
|
Presentation Title |
In-situ Melt Pool Morphology Estimation From Thermal Imaging via Vision Transformers |
Author(s) |
Odinakachukwu Francis Ogoke, Peter Pak, Alexander Myers, Guadalupe Quirarte, Jack Beuth, Jonathan Malen, Amir Barati Farimani |
On-Site Speaker (Planned) |
Odinakachukwu Francis Ogoke |
Abstract Scope |
Insufficient overlap between the melt pools produced during Laser Powder Bed Fusion (L-PBF) can lead to lack-of-fusion defects and deteriorated mechanical response. In-situ monitoring of the below surface morphology of the melt pool requires specialized equipment that may not be readily accessible or scalable. Therefore, we introduce a machine learning framework to correlate in-situ thermal images observed via two-color thermal imaging to the two-dimensional profile of the melt pool cross-section. Specifically, we employ a temporal Vision Transformer to establish a correlation between single bead off-axis thermal image sequences to melt pool cross-section contours measured via optical microscopy. Our framework is able to model the curvature of the below surface melt pool, with improved performance in high energy density regimes compared to analytical melt pool models. The performance of this model is evaluated through dimensional and geometric comparisons to the corresponding experimental melt pool data. |
Proceedings Inclusion? |
Definite: Other |