ABSTRACT
Fatigue refers to a phenomenon in which stress of metallic structures at failure is significantly lower than the yield strength after long-term periodic loads. Corroded steel structures characterized by reduced nominal cross sections and complex surface morphology are prone to fatigue damage, and have attracted much attention in the community of civil engineering. This study presents a comprehensive study on the fatigue behavior of corroded steel plates. Specimens were first placed in a neutral salt spray environment and then loaded by fatigue. Effects of different placement angles on the morphology and fatigue behavior of the steel plates were investigated. A 3D laser scanner was adopted to obtain the corrosion morphology and later applied in the numerical simulation. A three-dimensional finite element model was proposed to calculate the stress concentration factor (SCF) and strain concentration factor (SNCF) of the specimen.
