About this Abstract |
Meeting |
TMS Specialty Congress 2024
|
Symposium
|
2nd World Congress on Artificial Intelligence in Materials & Manufacturing (AIM 2024)
|
Presentation Title |
Capturing AM Process Defects on Fatigue Fracture Surfaces Through Machine Learning Segmentation |
Author(s) |
Austin Q. Ngo, Kristen Hernandez, Oluwatumininu Adeeko, Ayorinde Olatunde, Anirban Mondal, Roger H French, John J Lewandowski |
On-Site Speaker (Planned) |
John J Lewandowski |
Abstract Scope |
While process defects arising in additive manufacturing (AM) may be quantified through several methods, only defects on fatigue fracture surfaces directly show the influence of defects on crack initiation and propagation. To quantify large defect populations on a fracture surface, machine learning algorithms for feature segmentation were utilized to characterize fracture surfaces of Ti-6Al-4V fatigue samples fabricated by powder bed AM. Process-induced defects were identified and quantified by feature training an image classification system using SEM images of fracture surfaces. Process defects were found to range in size, shape, and population due to variations in AM build process parameters. All process-induced defects across each fracture surface were quantified, with ‘killer’ fatigue crack initiating defects being identified. In addition, this computer vision method is compared to ground truth manual quantification of fracture surface defects. The advantages and challenges of implementing ML algorithms to streamline fracture surface defect quantification will be discussed. |
Proceedings Inclusion? |
Definite: Other |