About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
AI/Data Informatics: Computational Model Development, Verification, Validation, and Uncertainty Quantification
|
Presentation Title |
Using Unsupervised Learning to Cluster Fatigue Life Based on Small Crack Characteristics |
Author(s) |
Katelyn Jones, Paul Shade, Reji John, Patrick Golden, Elizabeth Holm, Anthony Rollett |
On-Site Speaker (Planned) |
Katelyn Jones |
Abstract Scope |
This work seeks to collect scanning electron microscope (SEM) images of Ti-6Al-4V fatigue fracture surfaces and apply convolutional neural networks, to build a dataset of fatigue fracture surface images and make a connection between them and fatigue life. Round bar specimens used in a previous study on fatigue life at various stress levels have been imaged in regular intervals with an SEM. The images capture the crack initiation site, short crack, and steady crack regions; multiple magnifications were utilized to determine which length scale allows the machine learning algorithms to infer physically meaningful information. The images are compared using unsupervised machine learning methods to determine which part of the fracture surface provides the information that links the fracture surface to the fatigue lifetime, then weakly and fully supervised learning to verify those connections. The images taken, the algorithms used, identified fatigue properties, and fracture characteristics will be presented. |
Proceedings Inclusion? |
Planned: |
Keywords |
Machine Learning, Titanium, Other |