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Assessment of crack tip plastic zone size and shape and its influence on crack tip shielding [PDF]
Fatigue and Fracture of Engineering Materials and Structures, 2016 AbstractThis paper presents a novel methodology for the experimental quantification of the crack tip plastic zone during fatigue crack growth. It is based on the application of yielding criteria to estimate the area and shape of the crack tip plastic zone using both the von Mises and Tresca yield criteria.
M N James +2 more
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Journal of Materials Research and TechnologyThe evolution of residual stresses (RS) at a crack tip and associated changes in crack shielding effects during fatigue crack growth (FCG) has a first order effect on the fatigue life of welded joints.
Zhe Zhang +3 more
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The influence of crack tip shielding on fatigue crack propagation [PDF]
Fracture and Structural Integrity, 2017 The fatigue crack propagation is one of the major problems and of the real concern in the evaluation of the structural integrity of components. This is due to the fact that once a fatigue crack has been detected it is also known its effect on the ...
Anghel Cernescu
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Extension of the CJP model to mixed mode I and mode II [PDF]
Fracture and Structural Integrity, 2013 The present authors have previously proposed a novel ‘plastic inclusion’ approach for dealing with the local plasticity which occurs at the tip of a growing fatigue crack.
C. J. Christopher +2 more
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Crack tip shielding observed with high-resolution transmission electron microscopy. [PDF]
Microscopy (Oxf), 2015 The dislocation shielding field at a crack tip was experimentally proven at the atomic scale by measuring the local strain in front of the crack tip using high-resolution transmission electron microscopy (HRTEM) and geometric phase analysis (GPA). Single crystalline (110) silicon wafers were employed.
Adhika DR +3 more
europepmc +4 more sources
Anisotropic fracture mechanics of pre-cracked T4,4,4-Graphyne Nanosheets: Effects of crack geometry and temperature. [PDF]
PLoS ONEAn atomistic study is conducted to elucidate the fracture behavior of pristine and centrally pre-cracked T4,4,4-graphyne nanosheets (150 Å × 150 Å) under uniaxial tension in both X- and Y-directions.
Chuanyuan Tan, Ali Ghasemi
doaj +2 more sources
Damage-programmable design of metamaterials achieving crack-resisting mechanisms seen in nature [PDF]
Nature CommunicationsThe fracture behaviour of artificial metamaterials often leads to catastrophic failures with limited resistance to crack propagation. In contrast, natural materials such as bones and ceramics possess microstructures that give rise to spatially ...
Zhenyang Gao +7 more
doaj +2 more sources
Dental Materials, 2018 To quantify the extent of crack-tip plasticity, crack opening displacement (COD) and crack bridging for crack growth perpendicular (HAH) and parallel (RAR) to the tubules in elephant dentin under both hydrated and dry conditions to better understand their influence on intrinsic and extrinsic toughening during crack growth.Compact tension test-pieces ...
Xuekun Lu +2 more
exaly +5 more sources
Dual-bond fracture metamaterials with full-field extrinsic toughening [PDF]
Nature CommunicationsFracture resistance presents a pivotal challenge in mechanical metamaterials, as traditional designs often fail to mitigate crack propagation and enhance energy dissipation. Despite efforts to enlarge the fracture process zone, energy dissipation remains
Zhiqiang Meng +4 more
doaj +2 more sources
International Journal of Solids and Structures, 2009 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yong-Dong Li
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