| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Late News Poster Session
|
| Presentation Title |
NOW ON-DEMAND ONLY: F-42: Study of the Sub-surface Thermal and Plastic Strain Distribution during Laser Shock Peening of Aerospace Grade Alloys – Simulation and Experiments |
| Author(s) |
Ayan Bhowmik, Varad Vijendra Choudhari, Niroj Maharjan |
| On-Site Speaker (Planned) |
Ayan Bhowmik |
| Abstract Scope |
Laser shock peening produces compressive stresses deep below the metallic surface thereby improving fatigue and corrosion lives of structural components. Laser shock peening, is essentially a mechanical peening process and by the virtue being carried out in a submerged medium with protective overlay, does not induce significant thermal effects on specimens. However, high strain rates due to laser impingement could be accompanied by a temperature rise in sub-surface regions. In this work we conduct combined experimental and simulation-based investigation to understand the individual effect of plastic strain due to shock wave-deformation and any possible accompanying sub-surface thermal effects We choose Ti- and Ni-based alloys, both of which are used extensively in the aerospace sector. The distribution and effect of thermal field would be assessed using physics-based model simulations and the microstructural signature of the thermal and strain fields is validated through experimental characterisation of the structure at appropriate length scales. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Characterization, Surface Modification and Coatings, Modeling and Simulation |