Results 281 to 290 of about 186,782 (332)
Some of the next articles are maybe not open access.
Effect of Underloads on Plasticity-Induced Crack Closure: A Numerical Analysis
Journal of engineering materials and technology, 2019The effect of underloads is mostly quantified by the averaged effect on the fatigue crack growth rate, and the transient behavior is rarely investigated.
F. Antunes +3 more
semanticscholar +1 more source
The effect of overloads on threshold and crack closure
International Journal of Fatigue, 1985Abstract The effect of tensile and compressive overloads on the threshold stress intensity level and crack closure behaviour of one aluminium alloy and three steels has been investigated. A few tensile overloads significantly decreased the crack propagation rate and increased the threshold stress intensity.
openaire +1 more source
Analysis of effects of crack closure in shells
Engineering Fracture Mechanics, 1989Abstract The effect of crack closure in a shell was studied using the finite element method. Elastic open cylindrical shells, containing through-wall-thickness stationary cracks under bending loads, were considered. Crack closure was modeled using the line closure model.
openaire +1 more source
THE EFFECT OF ENVIRONMENT ON CRACK CLOSURE AND FATIGUE THRESHOLD*
Fatigue & Fracture of Engineering Materials & Structures, 1983Abstract— The threshold value for fatigue crack growth of a medium carbon steel was increased when the test‐environment was changed from air to an aggressive H2S‐containing brine. This increase in fatique threshold was shown to be caused by corrosion product‐induced crack closure.
J. A. Ruppen, R. Salzbrenner
openaire +1 more source
Effect of periodic bands of overloads on crack closure
International Journal of Pressure Vessels and Piping, 1989Abstract Crack closure experiments were performed on 6061-T6 Al-alloy for various bands of overloads. These bands of overloads were applied after an interval of 10% CAL life from the beginning and after exhausting 50% CAL life. The sequence is almost constant amplitude loading with periodically inserted multiple overloads, which subsequently cause ...
Raghuvir Kumar, S.B.L. Garg
openaire +1 more source
On crack closure and the notch size effect in fatigue
Engineering Fracture Mechanics, 1987Abstract A method for determining the fatigue notch-size-effect is presented based upon the development of closure in the wake of a newly formed crack growing from a notch. A comparison with experimental results is in accord with predictions. The effect of crack closure on the formation of non-propagating cracks at notches and on notch sensitivity is
A.J. McEvily, K. Minakawa
openaire +1 more source
The effect of pre-strain on fatigue crack growth and crack closure
Engineering Fracture Mechanics, 1976Abstract A single pre-strain ( ϵ = 0.03 ) applied to 2024-T3 material raised the static yield strength from 428 to 480 MN/m 2 . The growth rate of a fatigue crack in the pre-strained material was about twice as large as in the material that was not pre-strained.
openaire +1 more source
The Effects of Crack Closure on Ultrasonic Scattering Measurements
1984The ultrasonic scattering from cracks is traditionally modelled by requiring that the stresses vanish on the crack faces. A violation of this assumption is found in real cracks when asperities on opposing faces are forced into contact by closure or applied stresses.
Thompson, Donald, Chimenti, Dale
openaire +2 more sources