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.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
M.R. Ayatollahi, M. Rashidi Moghaddam, F. Berto,