| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Aging and Compatibility: Experimental and Computational Approaches to Enable Lifetime Predictions
|
| Presentation Title |
Probing Bulk Mechanical Properties of Silicones Over the Course of Long-term Compressive Strain |
| Author(s) |
Matthew Anthony Worthington, Samantha Ruelas |
| On-Site Speaker (Planned) |
Matthew Anthony Worthington |
| Abstract Scope |
Additively manufactured (AM) silicone polymers play a major role in stockpile stewardship due to their versatility and durability. Understanding their aging and compatibility behavior is vital to fulfill NNSA’s mission of maintaining a safe, secure, and effective nuclear deterrent stockpile. Here, we present our results of aging AM silicones with different printing geometries under compression, in the presence and absence of a corrosive base.
We tracked changes in load retention and compression set at various temperatures over time with the goal of developing time-temperature superposition (TTS) curves to estimate life of program performance. Load retention being the ratio of the load at a certain time while compressed, to the initial load of the specimen; and compression set measuring the material’s ability to revert to its original height. Preliminary results show a mechanistic change in AM silicones where we observe a softening, stiffening, softening trend in the materials’ load retention. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Polymers, Mechanical Properties, |