Results 31 to 40 of about 230,446 (308)

Fatigue life prediction of z-fibre pinned composite laminate under mode I loading [PDF]

open access: yes, 2019
A hybrid method is presented combining linear elastic fracture mechanics with nonlinear damage mechanics that can predict the fatigue crack growth rate in z-fibre pinned composites under mode I loading.
Ayre, David   +3 more
core   +2 more sources

A three-dimensional multiscale model of intergranular hydrogen-assisted cracking [PDF]

open access: yes, 2010
We present a three-dimensional model of intergranular hydrogen-embrittlement (HE) that accounts for: (i) the degradation of grain-boundary strength that arises from hydrogen coverage; (ii) grain-boundary diffusion of hydrogen; and (iii) a continuum model
Ortiz, M., Rimoli, J. J.
core   +1 more source

Experimental Investigation of Fatigue Crack Growth Behavior in Banded Structure of Pipeline Steel

open access: yesMetals, 2020
The effect of a ferrite/mixed phase banded structure on the fatigue crack growth behavior of pipeline steel has been investigated in this work. Constant stress-controlled fatigue tests were carried out on unilateral notch specimens in the longitudinal ...
Nan Zhan, Zhengxing Hu, Xiaochuan Zhang
doaj   +1 more source

Predicting creep-fatigue crack growth rates in Alloy 709 using finite element simulations of plasticity and creep-induced crack closure

open access: yesMATEC Web of Conferences, 2018
This paper reports on a computational study and experimental validation of creep-fatigue crack growth rates at high temperature in two structural materials.
Ramirez Jose   +6 more
doaj   +1 more source

R-curve Evaluation of Copper and Nickel Single Crystals Using Atomistic Simulations

open access: yesCrystals, 2018
The technique of molecular statics (MS) simulation was employed to determine the crack growth resistance curve of Cu and Ni single crystals. Copper and Ni single crystal nanoplates with an edge crack subjected to a tensile displacement were simulated ...
Xiao Ru Zhuo   +2 more
doaj   +1 more source

Subcritical crack growth in oxide and non-oxide ceramics using the Constant Stress Rate Test [PDF]

open access: yesProcessing and Application of Ceramics, 2015
Fracture toughness is one of the most important parameters for ceramics description. In some cases, material failure occurs at lower stresses than described by KIc parameter.
Agnieszka Wojteczko   +5 more
doaj   +1 more source

Three-Dimensional Surface Crack Growth of Maraging Steel Spherical Pressure Shell

open access: yesJournal 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
doaj   +1 more source

Fatigue crack propagation in microcapsule toughened epoxy [PDF]

open access: yes, 2004
The addition of liquid-filled urea-formaldehyde (UF) microcapsules to an epoxy matrix leads to significant reduction in fatigue crack growth rate and corresponding increase in fatigue life.
Brown, Eric N.   +2 more
core   +1 more source

Effect of different environmental conditions on surface crack growth in aluminum alloys [PDF]

open access: yesFracture and Structural Integrity, 2017
. Fatigue surface crack growth is studied through experiments and computations for aluminum alloys D16T and B95AT (analogue of 2024 and 7075 aluminum). Subjects for studies are cylindrical hollow specimens with external semi-elliptical surface crack. The
V. Shlyannikov   +2 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

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