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- W2001238073 abstract "The fractal dimension is a basic parameter to indicate the random self-similar shape and phenomena. The damage process is the result of co-effect of all the cracks, which shows a good collective behavior and random statistical complexity. The collective evolution of short fatigue cracks was experimentally studied through cylindrical specimens with annular notches with respect to the variation of nominal strain amplitudes. The maximum between-class variance method (Otsu's method) was adopted for the denoised image binarization and the fractal dimensions were obtained. The results show that: the collective behavior of short fatigue cracks possesses good fractal characteristics; as the evolution of the short fatigue cracks, fractal dimensions underwent two stages: a primary stage of high growth speed, a relatively stable stage of almost to zero growth speed; the critical cut-off point at about 30% of the fatigue life according to the experimental results can be used to represent a threshold value of the MSC and PSC of short fatigue cracks." @default.
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- W2001238073 date "2012-02-01" @default.
- W2001238073 modified "2023-09-27" @default.
- W2001238073 title "A Fractal Study on Collective Evolution of Short Fatigue Cracks under Various Strain Amplitudes" @default.
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- W2001238073 doi "https://doi.org/10.4028/www.scientific.net/amr.476-478.2444" @default.
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