Results 21 to 30 of about 1,261 (166)

Novel Characterizations of Effective SIFs and Fatigue Crack Propagation Rate of Welded Rail Steel Using DIC

open access: yesMetals, 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
doaj   +1 more source

Effect of numerical parameters on plastic CTOD [PDF]

open access: yesFracture 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
doaj   +2 more sources

Role of Initial Crack Tip Shape, Plastic Compressibility and Strain Softening on Near-Tip Stress-Strain State in Fatigue Cracks during Simulation of a Finite Deformation based Elastic-Viscoplastic Constitutive Model

open access: yesMedžiagotyra, 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
doaj   +1 more source

Experimental characterisation of fatigue crack growth based on the CTOD measured from crack tip displacement fields using DIC

open access: yesFracture 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
doaj   +3 more sources

Residual stress effects on fatigue crack growth rate of mild steel S355 exposed to air and seawater environments

open access: yesMaterials & 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
doaj   +1 more source

Crack Growth in Ni-Cr-Mo-V Steel Using ΔCTOD Elastic–Plastic Model

open access: yesJournal of Marine Science and Engineering, 2022
Many studies have shown that the linear elastic fracture mechanics (LEFM) method based on the stress intensity factor range (ΔK) has limitations that cannot be ignored. Due to neglecting the influence of plastic deformation near the crack tip, LEFM shows
Jingxia Yue   +3 more
doaj   +1 more source

Effect of microstructure heterogeneity on the cryogenic fracture toughness of the dissimilar joint between SA645 and 304L made by laser welding

open access: yesMaterials Research Express, 2023
The cryogenic fracture toughness of the SA645/304L dissimilar weld, produced using continuous wave IPG fiber laser welding with a 0.3 mm beam offset towards the 304L side, and the microstructural effects on the fracture behavior were systematically ...
Fei Zhou   +6 more
doaj   +1 more source

Investigation of compact tensile and fracture mechanical properties of a duplex stainless steel bimetal composite with the interfacial zone

open access: yesJournal of Materials Research and Technology, 2022
The interfacial zone formed in the manufacturing process of bimetal or laminated metal composites owes complicated microstructures and properties. This special feature greatly affects the fracture toughness and fatigue strength of metal composites.
Zhou Li   +5 more
doaj   +1 more source

Novel method for measurement of pipeline materials fracture resistance-examination on selective laser sintered cylindrical specimens [PDF]

open access: yesScience of Sintering, 2022
This paper presents a part of development of a non-standard method for testing of cylindrical test specimens for measurement of fracture properties of pipeline materials.
Trajković Isaak   +6 more
doaj   +1 more source

Fatigue crack growth in notched specimens: a numerical analysis

open access: yesFracture and Structural Integrity, 2019
Fatigue crack growth (FCG) is linked to irreversible and non-linear processes happening at the crack tip, which explains different problems observed in the use of da/dN-?K curves. The replacement of ?K by non-linear crack tip parameters, namely the crack
F.V. Antunes   +3 more
doaj   +3 more sources

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