About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Materials Aging and Compatibility: Experimental and Computational Approaches to Enable Lifetime Predictions
|
| Presentation Title |
Strain-Controlled High-Cycle Fatigue of Aged Solder Joints for High-Reliability Environments |
| Author(s) |
David J. Kemmenoe, John Laing, Benjamin C. White, Hannah Fowler |
| On-Site Speaker (Planned) |
Hannah Fowler |
| Abstract Scope |
Modern computer-controlled flight systems depend on the integrity of soldered joints over long times under repeated vibrational loading and yet, very little mechanically loaded high-cycle fatigue data on high-reliability SnPb solder joints exists in the open literature. This talk describes our efforts to fill this gap with 12 Hz fully-reversed strain-controlled high-cycle fatigue experiments on OHFC copper butt joints with fully aged eutectic SnPb and SAC 396 solders, and compares these results to past unaged solder data. Joint failures occurred across a range of 100-1,000,000 cycles to failure. Fatigue initiation sites are correlated with micro- & macro-defects. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Joining, Mechanical Properties |