Results 11 to 20 of about 58,593 (304)
A Novel Methodology for Calculating Crack Opening Stress under Tension-Compression Cyclic Load
Advances in Materials Science and Engineering, 2021 Crack closure model has been used in several applications on the prediction of fatigue crack growth life, with expression of crack opening stress often serving as milestones.
Lin Zhang, Xiaohui Wei
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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
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Effect of crack closure on non-linear crack tip parameters [PDF]
International Journal of Fatigue, 2015 Abstract Crack closure concept has been widely used to explain different issues of fatigue crack propagation. However, some authors have questioned the relevance of crack closure and have proposed alternative concepts. The main objective here is to check the effectiveness of crack closure concept by linking the contact of crack flanks with non-linear
Antunes, F.V. +3 more
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Fatigue Crack Growth from Notches: A Numerical Analysis
Applied Sciences, 2020 A numerical approach based on plastic crack tip opening displacement (CTOD) was followed to study fatigue crack growth (FCG) from notches. The identification of fundamental mechanisms was made considering notched and unnotched models, with and without ...
Micael Borges +4 more
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Assessment of 3D Short Crack Closure in Ti-6Al-4V Alloy Utilizing Synchrotron X-ray Microtomography [PDF]
MATEC Web of Conferences, 2020 Synchrotron X-ray microtomography was utilized to observe the complex 3D crack morphology and the closure behavior of a short crack in Ti-6Al-4V alloy. The aim of the study was to investigate the effect of the crack path evolution on the 3D short crack ...
TUBEI Valary +5 more
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Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell
Journal of Marine Science and Engineering, 2021 This study focused on the three-dimensional surface crack growth of a spherical pressure shell. Eight maraging steel 18Ni (250) samples were fabricated and tested, and the fatigue crack growth rate curves were obtained.
Yongmei Zhu, Rujun Li, Jiahao Yang
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A numerical study of the effect of single overloads on plasticity induced crack closure [PDF]
, 2017 In this work, the effect of single overloads on plasticity induced crack closure is studied. An elastic-plastic finite element model was developed and the crack opening level was calculated from the contact forces along the crack flank.
Antunes, F.V. +3 more
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Plasticity induced crack closure in adhesively bonded joints under fatigue loading [PDF]
, 2015 The mean load of a cyclic loading has a large effect on fatigue crack growth rates in metallic materials and bonded joints. In metallic structures, this effect has been attributed to plasticity-induced crack closure, but little is known about the ...
Donough, M +3 more
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Finite element analysis of plasticity - induced fatigue crack closure using contact elements [PDF]
, 2010 To predict crack opening stresses, contact elements are incorporated into the elastic-plastic finite element analysis of fatigue crack closure. A code using ANSYS Parametric Design Language (APDL) is developed.
Gökçen, Mehmet Gökhan +1 more
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Multi-Crack Dynamic Interaction Effect on Oil and Gas Pipeline Weld Joints Based on VCCT
Energies, 2022 In pipelines for transporting oil and gas, multiple cracks often exist in weld joints. The interaction among the cracks should be considered as it directly affects the life span of the pipeline structures. In the current investigation, based on the fluid–
Wei Cui +5 more
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