Analysis of pit to crack transition under corrosion fatigue & the safe-life approach using the modified Kitagawa-Takahashi diagram
Source abstract
Abstract
Abstract A detailed analysis of pit to crack transition during corrosion fatigue is presented considering corrosion pits as ellipsoidal notches with the associated stress concentration factors, Kt. For the analysis, the experimental data are collected from various publications in the open literature. Both S-N and fatigue crack growth (FCG) data are analyzed in this paper using our Unified Approach that considers the R-ratio effects are intrinsic to fatigue. The Kitagawa-Takahashi (KT or K-T) diagram, as modified by the authors, is used to connect the fatigue life of a smooth specimen to that of a fracture mechanics specimen. Internal stress and safe-life regimes are identified using the KT diagram.
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Research context
OpenAlex topics: Fatigue and fracture mechanics · Concrete Corrosion and Durability · Non-Destructive Testing Techniques
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