About this Abstract |
Meeting |
TMS Specialty Congress 2025
|
Symposium
|
3rd World Congress on Artificial Intelligence in Materials & Manufacturing (AIM 2025)
|
Presentation Title |
Non-Destructive Residual Stress Prediction via Indentation Plastometry and CNN Modeling |
Author(s) |
Deunbom Chung, Minwoo Park, Kyeongjae Jeong, Heung Nam Han |
On-Site Speaker (Planned) |
Deunbom Chung |
Abstract Scope |
Accurate assessment of residual stress is essential for ensuring the structural integrity and performance of advanced materials. However, conventional evaluation methods can be destructive or limited in applicability. To address these shortcomings, this study proposes non-destructive indentation plastometry integrated with a finite element-convolutional neural network (FE-CNN) to predict residual stress and plasticity. Validated finite element simulations of spherical indentation under various material properties served as the training database. The CNN effectively captures spatial information from three directional indentation profiles, achieving high accuracy in both simulation and experimental results. Its robustness was assessed through sensitivity tests on intentionally manipulated data, thereby confirming reliability under various experimental data quality. Applied to additively manufactured samples, the method demonstrated its non-destructive and highly accurate residual stress prediction capabilities, verified by neutron diffraction measurements. Consequently, the FE-CNN framework offers a versatile and robust platform for broader non-destructive stress evaluations in materials. |
Proceedings Inclusion? |
Undecided |