Effect of Specimen geometry on high cycle fatigue life of S460 NL
Abstract
The volume at which the crack is most likely to start is known as the risk volume. Given the specific geometry of the samples for fatigue loading (three and four point bending and tensile tests performed on rectangular and round specimens), this is a significant problem. Additionally, the distribution of stress within the risk volume provides crucial information for describing and predicting fatigue behavior. The risk volume was computed and compared to fatigue testing findings for S460NL high strength steel samples with various geometries. Gathered information on fatigue and the microstructure’s development in relation to the estimated risk volume sizes will be considered. The fatigue characteristics of engineering materials are being thoroughly researched worldwide in an effort to reduce fatigue failure. Several standards were created to guarantee the comparability and reproducibility of fatigue properties across various laboratories (as ASTM etc.). The standards outline the fundamentals of sample design to reduce potential variations in experimental outcomes. However, in the past decades, non-conventional testing methods were introduced for fatigue properties determination which brought new challenges, see [1-3].
