Fatigue tests and damage model development on Al-Si-Mg aluminum alloys with low-velocity impact pit

• The effect of pit depth on S-N curve is studied. • A CDM approach is developed to predict the fatigue life in the presence of impact pit. • A nondimensional parameter of pit depth is used to model the effect of impact pit. An experimental-analytical investigation was conducted to study the fatigue properties of ZL114A aluminum alloy with low-velocity impact pit . The analysis of the fracture surfaces indicated that the cracks initiated at the...