Characterizing how different modes of corrosion exposure impact fatigue testing results on 4340 HSS steel. - CANCELLED

Paper ID: C2025-00074 ABSTRACT: Assessing the relationship between corrosion and fatigue performance on steel has historically been executed under immersion conditions. However, it is known that corrosion under immersive conditions do not accurately represent the damage modes observed through atmospheric corrosion. To address this deficiency, 4340 HSS fatigue bars were exposed to natural environments, outdoor accelerated conditions, immersion and wet to dry cycling test methods to understand how the resulting corrosion damage influenced the follow-on fatigue testing. The goal of this effort is to provide necessary information to inform new combined effects test methodologies capable of assessing how the onset and propagation of corrosion can influence fatigue test results.
SPR-2024-0448 Distribution Statement A - "Approved for public release; distribution is unlimited"