Results 1 to 10 of about 278 (131)
Hierarchical Twin Networks Enable Exceptional Strength and Fracture Toughness in Titanium. [PDF]
Adv Sci (Weinh)A commercial‐purity titanium with hierarchical ultrafine twin structures delivers an exceptional combination of fracture toughness (KJIc) of 187 MPa·m1/2 and specific yield strength of 140 MPa·cm3·g−1, in which pre‐engineered high‐density twin boundaries stimulate massive and
Zou XW, Zhu T, Ma E, Han WZ.
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Strain Field Around Individual Dislocations Controls Failure. [PDF]
Small MethodsBy conducting in situ transmission electron microscopy strain mapping during a nanoscale fracture experiment, the dislocation processes taking place at the crack tip in the rather brittle metal chromium is detailed. Moreover, for the first time, the local stress fields of the dislocations shielding the crack is directly measured. Abstract Understanding
Gammer C +4 more
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Electrostatically Reinforced Double Network Granular Hydrogels. [PDF]
Adv Sci (Weinh)Electrostatically reinforced double network granular hydrogels (DNGHs) with cartilage‐like fracture energy are introduced. An empirical model predicts the composition‐dependent fracture energy based on dissipation zone size, contact area, and inter‐particle adhesion energy. Thanks to their granular structure and the inter‐particle attraction, the DNGHs
Yuan T, Li C, Kolinski JM, Amstad E.
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Investigation of fracture properties of mode I fracture in heat-treated granite. [PDF]
Sci RepThe mode I fracture properties of granite under high-temperature conditions were investigated to reveal the influence of different heat treatment temperatures on the fracture toughness, crack propagation behavior, and brittle-ductile transition of ...
Niu S, Wu J, Chen S, Zhao J.
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Experimental evaluation of CTOD in constant amplitude fatigue crack growth from crack tip displacement fields [PDF]
Fracture and Structural Integrity, 2017 In the current work an experimental study of the crack tip opening displacement (CTOD) is performed to evaluate the ability of this parameter to characterise fatigue crack growth.
J.M. Vasco-Olmo +3 more
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Metals, 2023 The fatigue crack growth-rate test of rail head, waist, and bottom material for U71Mn welded rail was carried out. Digital image correlation (DIC) was used to capture the full-field displacement.
Xiu-Yang Fang +4 more
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Effect of numerical parameters on plastic CTOD [PDF]
Fracture and Structural Integrity, 2017 Fatigue crack growth (FCG) is associated with irreversible and non-linear processes happening at the crack tip. This explains different problems observed in the use of da/dN-?K curves, namely the inability to explain stress ratio and load history effects.
F.V. Antunes +3 more
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Medžiagotyra, 2022 This paper deals with the effect of initial crack tip shape, plastic compressibility, and strain softening on near-tip stress-strain fields for a mode I crack subjected to fatigue loading under plane strain and small scale yielding. A finite strain-based
Md Intaf ALAM +3 more
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Fracture and Structural Integrity, 2019 The current work presents an experimental study on the use of the crack tip opening displacement (CTOD) to evaluate its ability to characterise fatigue crack growth.
J.M. Vasco-Olmo +3 more
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Materials & Design, 2020 In this paper, the parameters of fatigue crack growth rate for Q355J2 steel exposed to air and seawater were presented using the “Paris' law” based on the stress intensity factor (SIF), J-integral, crack tip opening displacement (CTOD) and crack tip ...
Haohui Xin, Milan Veljkovic
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