| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7169255 | Engineering Fracture Mechanics | 2018 | 12 Pages |
Abstract
The effects of specimen geometry on the fatigue crack growth rate and the number of elapsed cycles have been investigated experimentally and theoretically for Al 7075-T6 using four different cracked specimens with positive and negative T-stresses. All the specimens have been tested under high cycle fatigue loading. An energy-based method, namely the generalized strain energy density (GSED) criterion has been proposed to estimate the fatigue crack growth rate and the number of elapsed cycles by considering the T-stress effects. It is shown that the proposed criterion can provide significantly improved predictions for the fatigue crack growth behavior of the pre-cracked specimens.
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Authors
M.R. Ayatollahi, M. Rashidi Moghaddam, F. Berto,