The use of fractal dimensions in the prediction of residual fatigue life of pre-corroded aluminum alloy specimens

The method of using fractal dimension of corroded surface to predict residual lives of pre-corroded specimens is illustrated in this paper. A new technique to calculate 3D fractal dimension was proposed. The relationship between residual lives of pre-corroded smooth and notch specimens and 3D fractal dimensions of corroded surfaces were discussed. The new methods based on 3D fractal dimension of corroded surface to calculate pre-corroded residual lives of smooth and notch specimens and their probability distribution were proposed. The results indicated that 3D fractal dimensions of corroded surfaces can be used to calculate residual life of pre-corroded specimens and their probability distribution accurately.