Toward Improved and Reliable Estimation of Operating Life of Critical Components Through Assessment of Fatigue Properties Using Novel Fatigue Testing Concepts

摘要: Accurate and reliable life prediction is one of the challenges faced by engineers working in safety-critical domains such as power plants, transportation, offshore structures. This paper presents developments to estimate fatigue properties materials using small volume sample material—similar scooped samples. Cyclic ball indentation cyclic punch testing methods have been developed over a period nearly two decades demonstrated predict in-service materials. Some salient results are discussed this paper. In case structures, synergistic effect mechanical loading at low frequency combined with corrosive environment accelerates damage. Life for structures requires data on corrosion-fatigue crack growth frequencies. time-consuming effort hence there need through novel test methods. Frequency shedding method proposed rate behavior environments. Further, designers operators equipment resort avoidance free corrosion use electrode potentials. However, choice potential dependent stress state. Through systematic study, optimum study has identified same here. It hoped that directions shown carry out generation under more realistic conditions would help extension community large.