| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Sustainability of High Temperature Alloys
|
| Presentation Title |
Extending Service Life through Location Specific Lifing of Components |
| Author(s) |
Michael D. Sangid, Saikiran Gopalakrishnan, Ritwik Bandyopadhyay |
| On-Site Speaker (Planned) |
Michael D. Sangid |
| Abstract Scope |
Traditionally, aerospace components are treated as monolithic structures during lifing analyses, wherein distinct microstructural information at individual locations is not necessarily considered. In components with gradient microstructures, the resulting material allowables are conservative and associated with large uncertainty bounds. To improve precision in the life estimates, a location-specific lifing framework is developed, which tracks manufacturing processes and retrieves microstructural information at distinct locations for use within a crystal plasticity fatigue life prediction model. A use case for the lifing of a dual microstructure heat treated turbine disk component is demonstrated near the bore (fine grains) and rim (coarse grains) regions. We employ the framework to access (a) the grain size statistics and (b) the macroscopic strain fields to inform precise boundary conditions for the crystal plasticity analysis. The proposed location-specific lifing framework presents new opportunities for sustainability via service life extensions, designing components, and tailoring microstructures to enhance performance. |
| Proceedings Inclusion? |
Planned: |