Results 21 to 30 of about 781,009 (287)

Machine-Learning-Based Real-Time Photoacoustic Surface Crack Detection

open access: yesEngineering Proceedings, 2023
Photoacoustic imaging is commonly utilized in biomedical research due to its capability to provide the functional and structural details of imaging targets, featuring optical contrast and ultrasound resolution.
Abdulrhman Alshaya   +2 more
doaj   +1 more source

Effect of grain disorientation on early fatigue crack propagation in face-centred-cubic polycristals: A three-dimensional dislocation dynamics investigation [PDF]

open access: yes, 2013
Three-dimensional dislocation dynamics simulations are used to study micro-crack interaction with the first micro-structural barrier in face-centred cubic bi-crystals loaded in high cycle fatigue conditions. In the examined configuration, we assumed that
depres, christophe   +3 more
core   +5 more sources

Stress-strain state of bending reinforced beams with cracks

open access: yesИнженерно-строительный журнал, 2020
The work is dealing with studying the stress-strain state of bending pre-stressed concrete beams with cracks. The problems of determining preliminary stresses in a reinforced concrete element, determining the moment of crack formation, and determining ...
Omirkhan Khabidolda   +5 more
doaj   +1 more source

Development of a fretting-fatigue mapping concept: The effect of material properties and surface treatments [PDF]

open access: yes, 2009
Fretting-fatigue induced by combined localized cyclic contact motion and external bulk fatigue loadings may result in premature and dramatic failure of the contacting components.
Araújo   +32 more
core   +1 more source

Elucidation of Mechanism of Brick Wall Frost Damage at JR Kitami Station

open access: yesJournal of MMIJ, 2016
In this study, we conducted a follow-up survey of brick cracking on a brick wall in the parking space of JR Kitami Station and installed temperature sensors on the surface of the brick wall in order to measure changes in the brick wall temperature during
Dai NAKAMURA   +5 more
doaj   +1 more source

Estimating Terminal Velocity of Rough Cracks in the Framework of Discrete Fractal Fracture Mechanics [PDF]

open access: yes, 2010
In this paper we first obtain the order of stress singularity for a dynamically propagating self-affine fractal crack. We then show that there is always an upper bound to roughness, i.e. a propagating fractal crack reaches a terminal roughness.
Khezrzadeh, Hamed, Yavari, Arash
core   +1 more source

Concrete Crack Monitoring Using a Novel Strain Transfer Model for Distributed Fiber Optics Sensors

open access: yesSensors, 2020
In this paper, we study the strain transfer mechanism between a host material and an optical fiber. A new analytical model handling imperfect bonding between layers is proposed.
Antoine Bassil   +3 more
doaj   +1 more source

Integral equations of a cohesive zone model for history-dependent materials and their numerical solution [PDF]

open access: yes, 2014
A nonlinear history-dependent cohesive zone (CZ) model of quasi-static crack propagation in linear elastic and viscoelastic materials is presented. The viscoelasticity is described by a linear Volterra integral operator in time.
Atkinson   +12 more
core   +2 more sources

The contribution of type-I IFN-mediated neuroinflammation to Parkinson's disease progression

open access: yesBrain, Behavior, & Immunity - Health
Parkinson's disease (PD) is a chronic neurodegenerative disease characterized by motor dysfunction. Pathological hallmarks of the disease include selective dopaminergic neuronal death, intraneuronal deposits known as Lewy bodies and extensive ...
Shuyan Chen   +2 more
doaj   +1 more source

Research on Reconstruction and Quantitative Characterization of Three-dimensional Cracks in Pyrolysis Anthracite

open access: yesTaiyuan Ligong Daxue xuebao, 2021
In order to study the effect of temperature on the permeability of anthracite coal cracks, Jincheng anthracite coal was used as the research object, and the pyrolysis CT scan of Jincheng anthracite coal under different temperatures was performed by using
Yong WANG   +3 more
doaj   +1 more source

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