Results 1 to 10 of about 4,584 (157)

A phenomenological constitutive model considering crack closure effect of thermally damaged rock [PDF]

open access: yesScientific Reports
Crack closure behavior is an important part in stress-strain curve of brittle rock; however, the crack closure effect is seldom described in previous constitutive models.
Lijun Sun   +4 more
doaj   +2 more sources

Fatigue crack closure: a review of the physical phenomena [PDF]

open access: yesFatigue and Fracture of Engineering Materials and Structures, 2017
Reinhard Pippan, Anton Hohenwarter
exaly   +2 more sources

A numerical study of non-linear crack tip parameters [PDF]

open access: yesFracture and Structural Integrity, 2015
Crack closure concept has been widely used to explain different issues of fatigue crack propagation. However, different authors have questioned the relevance of crack closure and have proposed alternative concepts.
F.V. Antunes   +3 more
doaj   +3 more sources

Study of Crack Closure Effect of Hull Plate under Low Cycle Fatigue

open access: yesJournal of Marine Science and Engineering, 2022
The crack closure phenomenon significantly influences low cycle fatigue (LCF) crack growth. The crack closure theory deems that a crack can grow only when the applied load is greater than the fatigue crack opening and closing loads.
Qin Dong, Mengyuan Rong, Geng Xu
doaj   +1 more source

A Study on Fatigue Crack Closure Associated with the Growth of Long Crack in a New Titanium Alloy

open access: yesMetals, 2023
In this article, the fatigue crack closure in a new titanium alloy is carried out under constant amplitude cyclic loading with the combination of the simulation method and experiments.
Jiarui Liu   +4 more
doaj   +1 more source

Multi-scale crack closure measurements with digital image correlation on Haynes 230 [PDF]

open access: yesFracture and Structural Integrity, 2015
An experimental campaign was developed to study fatigue crack growth in Haynes 230, a Ni-based superalloy. The effects of crack closure were investigated with digital image correlation, by applying two different approaches.
Stefano Beretta   +3 more
doaj   +2 more sources

Effect of Constraint and Crack Contact Closure on Fatigue Crack Mechanical Behavior of Specimen under Negative Loading Ratio by Finite Element Method

open access: yesMetals, 2022
Mechanical behaviors at fatigue crack tips of cracked specimens under negative loading ratios are studied in detail by the finite element method in this paper.
Xinting Miao   +4 more
doaj   +1 more source

Crack tip strain evolution and crack closure during overload of a growing fatigue crack [PDF]

open access: yesFracture and Structural Integrity, 2017
It is generally accepted that fatigue crack growth is retarded after an overload, which has been explained either by plasticity-induced crack closure or near-tip residual stress.
De-Qiang Wang   +2 more
doaj   +2 more sources

Measurement and simulation of crack growth rate and direction under non-proportional loadings [PDF]

open access: yesFracture and Structural Integrity, 2015
A series of fatigue experiments on thin-walled tubes under tension and torsion, the experimental results – crack path and crack growth life – are measured and compared.
Y. Hos, M. Vormwald
doaj   +3 more sources

Crack closure effect during the impact coal seam with high-pressure air blasting and the influence of gas drainage efficiency

open access: yesFrontiers in Earth Science, 2023
The crack closure in impact coal seams induced by high-pressure air blasting greatly affects gas drainage efficiency. The length of the crack closure was calculated and analyzed based on energy and elastic theories. The closure region was then determined
Weihua Song   +3 more
doaj   +1 more source

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