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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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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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
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Experimental evaluation of plasticity-induced crack shielding from crack tip displacements fields [PDF]
Fracture and Structural Integrity, 2015 In this work it is proposed a methodology for the evaluation of plasticity-induced crack shielding from the analysis of the crack tip displacements fields measured by digital image correlation.
J.M. Vasco-Olmo, F.A. Díaz
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Assessment of crack tip plastic zone size and shape and its influence on crack tip shielding [PDF]
Fatigue & Fracture of Engineering Materials & 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.
Anderson +19 more
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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
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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
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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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Tough double-bouligand architected concrete enabled by robotic additive manufacturing [PDF]
Nature CommunicationsNature has developed numerous design motifs by arranging modest materials into complex architectures. The damage-tolerant, double-bouligand architecture found in the coelacanth fish scale is comprised of collagen fibrils helically arranged in a bilayer ...
Arjun Prihar +3 more
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Influence of crack offset distance on the interaction of multiple cracks on the same side in a rectangular plate [PDF]
Fracture and Structural Integrity, 2015 In the present work finite element method has been employed to study the interaction of multiple cracks in a finite rectangular plate of unit thickness with cracks on the same side under uniaxial loading conditions.
Neeraj Bisht, P. C. Gope, Kuldeep Panwar
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