Results 21 to 30 of about 8,141 (305)

Interaction of a finite crack with shear waves in an infinite magnetoelastic medium

open access: yesApplied and Computational Mechanics, 2021
The aim of this paper is to investigate the interaction of a finite crack with shear waves in an infinite magnetoelastic medium. Fourier integral transformation is applied to convert the boundary value problem for a homogeneous,isotropic elastic material
Panja S.K., Mandal S.C.
doaj   +1 more source

Computation of the crack opening displacement in the phase-field model [PDF]

open access: yes, 2023
The phase-field model treats discrete cracks in a smeared sense by a regularisation technique. It holds attractive properties: there is no need to consider cracks as geometric discontinuities, and it avoids remeshing around crack tips.
Li, B.   +7 more
core   +1 more source

Experimental investigation of mixed-mode-I/II fracture in polymer mortars using digital image correlation method

open access: yesLatin American Journal of Solids and Structures
The purpose of this work is to investigate experimentally the effects of mixed-mode I/II loading on the fracture behavior of polymer mortars. Three point bend beam specimens with offcenter notch were used in plane-strain fracture toughness tests.
L.C.S. Nunes, J.M.L. Reis
doaj   +1 more source

Shear behavior of steel fiber reinforced concrete using full-field displacements from digital image correlation

open access: yesMATEC Web of Conferences, 2017
Reinforced concrete beams with discrete hooked-end steel fibers at 0.5% volume fraction are tested with a shear span to depth (a/d) ratio equal to 1.8.
Gali Sahith, Subramaniam Kolluru.V.L.
doaj   +1 more source

Fatigue crack growth rates under variable amplitude load spectra containing tensile underloads [PDF]

open access: yes, 2003
An extensive research program was performed to investigate the load interaction effect of the combined action of small amplitude high R ratio cycles and large amplitude low R ratio underloads on the crack growth of large cracks.
Zitounis, Vasilios
core  

Test for Crack Opening Displacement of Steel Fiber Reinforced Concrete under Three-Point Bending

open access: yes, 2010
Based on the principle of electrical measurement method, the clip gauge was made to measure the crack opening displacement (COD).Through the three-point bending test on the specimens of steel fiber reinforced high strength concrete (SFHSC), the effect of
Yuan Bao Leng   +2 more
core   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

open access: yesFEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes   +3 more
wiley   +1 more source

Crack tip strain evolution and crack closure during overload of a growing fatigue crack [PDF]

open access: yesFracture and Structural Integrity, 2017
It is generally accepted that fatigue crack growth is retarded after an overload, which has been explained either by plasticity-induced crack closure or near-tip residual stress.
De-Qiang Wang   +3 more
doaj   +3 more sources

Constraint evaluation and effects on selected fracture parameters for single-edge notched beam under four-point bending

open access: yesOpen Engineering, 2022
This article presents the results of analytical and numerical research focused on the numerical determination of selected fracture mechanics parameters for beams containing a crack in the state of four-point bending with the dominance of a plane strain ...
Graba Marcin
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

open access: yesFEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li   +2 more
wiley   +1 more source

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