Abstract Scope |
The Artemis core stage fuel tank welding process was optimized, significantly reducing process variation and improving weld strength. Machine learning models were used to establish process structure property relationships and identify an improved process window after model selection. A space filling experimental design was used to explore the design space and capture non-linear effects. A data pipeline was built to automatically ingest, verify, and clean complex data types including fracture surface images, sequential weld tool sensor data, and tabular processing and property data from test labs. Fracture surface defects were quantified using ConvNets for segmentation and traditional computer vision for featurization. Sequence data was analyzed using Long-Short Term Memory neural networks and activation maps were used to provide model interpretability. This presentation will discuss how machine learning, experimental design, and informatics were used to propose and validate hypothesis to improve Artemis fuel tank weld quality. |