Assessment of notch fatigue and size effect using stress field intensity approach
Source abstract
Abstract
Abstract Notch features have shown significant effects on fatigue performance of engineering components, which deserve more attentions during structural integrity design and assessment. This work firstly revisits the stress field intensity (SFI) approach as well as its recent advances. Then, an improved weight function is developed to account for the inhibition effect, and yields a modified SFI approach for notch fatigue analysis considering size effect. In addition, the relationship between fatigue failure region (FFR) radius and fatigue life was explored and quantified. Fatigue tests on Ni-based superalloy GH4169 notch specimens with different sizes were conducted at 650 °C, and experimental data of En3B steels and Al 2024-T351 alloys were used for model validation and comparison. Results indicate that the modified SFI approach provides better predictions than the other two approaches.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · High Temperature Alloys and Creep · Probabilistic and Robust Engineering Design
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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