About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
2026 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-85: FE Nanoindentation Simulations for Characterizing Material Extremes: Identifying Spherical Indenter Geometry at Shallow Depths |
| Author(s) |
Munireach Nannory, Timothy Truster, Vivek Chawla, Dayakar Penumadu |
| On-Site Speaker (Planned) |
Munireach Nannory |
| Abstract Scope |
Nanoindentation is widely used to measure hardness and elastic modulus of metal alloys, with growing reliance on simulations to improve accuracy and reduce experimental cost. Spherical indenters are often assumed ideal, yet microscale tips deviate markedly from perfect geometry due to manufacturing limitations. Such geometric inaccuracies strongly affect the elastic plastic strain field during initial contact, producing errors in property extraction. This study presents a novel geometric framework that integrates experimentally measured indenter topography into three dimensional finite element modeling. High resolution laser scanning using a VKx250 microscope captures the true tip geometry, which is incorporated into advanced FEM simulations using ABAQUS/Standard. The resulting indenter representation shows strong agreement with experimental data and significantly reduces measurement variability compared with idealized geometries. The results also demonstrate the importance of mesh density and show that three dimensional FEM models provide improved accuracy. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Modeling and Simulation, Computational Materials Science & Engineering, Other |