Results 1 to 10 of about 69,100 (301)
Crack tip strain evolution and crack closure during overload of a growing fatigue crack [PDF]
Fracture 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
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A phenomenological constitutive model considering crack closure effect of thermally damaged rock [PDF]
Scientific ReportsCrack 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
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Near-threshold fatigue crack propagation without oxide-induced crack closure. [PDF]
Sci Rep, 2020 AbstractAn accurate value for the threshold stress intensity factor range, ΔKth, is a key parameter for studying crack-like defects. However, it is difficult to obtain accurate ΔKthvalues due to oxide-induced crack closure. In this study, we report conditions for minimizing the effects of oxide-induced crack closure near the threshold region, where a ...
Tazoe K, Tanaka H, Oka M, Yagawa G.
europepmc +4 more sources
Effect of crack propagation on crack tip fields [PDF]
Fracture and Structural Integrity, 2013 Crack closure influences fatigue crack growth rate and must be included in the design of components. Plasticity induced crack closure is intimately linked with the crack tip plastic deformation, which becomes residual as the crack propagates.
F.V. Antunes +3 more
doaj +6 more sources
A numerical study of non-linear crack tip parameters [PDF]
Fracture 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
Journal 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
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A Study on Fatigue Crack Closure Associated with the Growth of Long Crack in a New Titanium Alloy
Metals, 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]
Fracture 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
Metals, 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
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Frontiers 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