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Electrically Tunable Piezotronic Transistor by Coupling Interface Polar Symmetry and Strain Gradient [PDF]

open access: yesAdvanced Science
Piezotronics, which enables mechanical stimuli to actively shape adaptive and seamless interactions between electronic systems and ambient environments, is becoming increasingly valuable in the Internet of Things, human‐machine interfaces, and wearable ...
Gongwei Hu   +9 more
doaj   +2 more sources

Constitutive Model of Thin Metal Sheet in Bulging Test Considering Strain Gradient Hardening

open access: yesMedžiagotyra, 2020
The study of the size effect was one of the most important subjects in the field of micro-forming. To investigate the stress of the thin sheet in the bulging test with the second order size effect, a constitutive equation considering the strain gradient ...
Wei LIANG, Tieping WEI, Xiaoxiang YANG
doaj   +1 more source

Distributed Strain Measurements Based on Rayleigh Scattering in the Presence of Fiber Bragg Gratings in an Optical Fiber

open access: yesPhotonics, 2023
This paper addresses the challenge of strain measurement using distributed fiber-optic sensors based on Rayleigh scattering in the presence of fiber Bragg gratings (FBGs) with a reflectivity level of 70% within the optical fiber. The reflectivity of such
Valerii Matveenko, Grigorii Serovaev
doaj   +1 more source

Strain-gradient effect on the crack tip dislocations density

open access: yesFracture and Structural Integrity, 2020
In this study, the influence of a material s plastic properties on the crack tip fields and dislocation density behavior is analytically and numerically analyzed using the conventional mechanism-based strain-gradient plasticity (CMSGP) theory established
Valery Shlyannikov   +2 more
doaj   +3 more sources

Mechanism of Splitting Failure for High Sidewall Cavern of Hydropower Station Based on Complex Function and Strain Gradient

open access: yesEnergies, 2021
With the rapid development of society, the number of hydropower projects has increased. During the construction of these projects, due to excavation-induced unloading, the high sidewalls of the hydropower station are often subject to splitting failure ...
Fan Li, Qiangyong Zhang, Wen Xiang
doaj   +1 more source

A Study on a New Method for Flexoelectric Coefficient Estimation of the Flexoelectric Unimorph Sensing Element

open access: yesApplied Mechanics, 2021
In a flexoelectric sensing element using bending mode, estimation of the flexoelectric coefficient was investigated using 3-D stress/strain analysis and experiments.
Seol Ryung Kwon, Yongrae Roh
doaj   +1 more source

Atherosclerotic Plaque Segmentation Based on Strain Gradients: A Theoretical Framework

open access: yesMathematics, 2022
Background: Atherosclerotic plaque detection is a clinical and technological problem that has been approached by different studies. Nowadays, intravascular ultrasound (IVUS) is the standard used to capture images of the coronary walls and to detect ...
Álvaro T. Latorre   +4 more
doaj   +1 more source

Progress of cross-scale mechanics in additive manufacturing technology for aeronautical application

open access: yesJournal of Aeronautical Materials, 2023
The application of metal additive manufacturing technology and products in the aviation field requires optimized structural design at macroscale and precise manufacture control at microscale.
YU Zhijie   +4 more
doaj   +1 more source

A theory of strain-gradient plasticity with effect of internal microforce [PDF]

open access: yesTheoretical and Applied Mechanics, 2017
This paper develops a theory of strain gradient plasticity for isotropic bodies undergoing small deformation in the absence of plastic spin. The proposed theory is based on a system of microstresses which include a microstress vector consistent with ...
Borokinni Adebowale   +2 more
doaj   +1 more source

Flexoelectric materials and their related applications: A focused review

open access: yesJournal of Advanced Ceramics, 2019
Flexoelectricity refers to the mechanical-electro coupling between strain gradient and electric polarization, and conversely, the electro-mechanical coupling between electric field gradient and mechanical stress. This unique effect shows a promising size
Longlong Shu   +5 more
doaj   +1 more source

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