Results 21 to 30 of about 1,603,297 (345)

Investigation on the ultimate load bearing capacity of U-shaped steel arch support in coal bursting mine

open access: yes矿业科学学报, 2021
The damage degree of the surrounding rock in the coal mine roadway is closely related to the support form, thus to carry out research on the ultimate bearing capacity of U-shaped steel support in coal bursting mine is of important guiding significance ...
Wang Hongwei   +5 more
doaj   +1 more source

Strain modification in coherent Ge and SixGe1–x epitaxial films by ion-assisted molecular beam epitaxy [PDF]

open access: yes, 1990
We have observed large changes in Ge and SixGe1–x layer strain during concurrent molecular beam epitaxial growth and low-energy bombardment. Layers are uniformly strained, coherent with the substrate, and contain no dislocations, suggesting that misfit ...
Atwater, H. A.   +2 more
core   +1 more source

Distributed sensor placement optimization for computer aided structural health monitoring [PDF]

open access: yesArchive of Mechanical Engineering, 2019
An optimal sensor placement methodology is implemented and herein proposed for SHM model-assisted design and analysis purposes. The kernel of this approach analysis is a genetic-based algorithm providing the sensor network layout by optimizing the ...
Salvatore Ameduri   +5 more
doaj   +1 more source

A Hybrid Method for Vibration-Based Bridge Damage Detection

open access: yesRemote Sensing, 2022
Damage detection algorithms employing the conventional acceleration measurements and the associated modal features may underperform due to the limited number of sensors used in the monitoring and the smoothing effect of spline functions used to increase ...
Semih Gonen, Emrah Erduran
doaj   +1 more source

Dark energy as an elastic strain fluid [PDF]

open access: yes, 2012
The origin of the accelerated expansion of the universe is still unclear and new physics is needed on cosmological scales. We propose and test a novel interpretation of dark energy as originated by an elastic strain due to a cosmic defect in an otherwise
Radicella, Ninfa   +2 more
core   +2 more sources

Interacting Dirac fermions under spatially alternating pseudo-magnetic field: Realization of spontaneous quantum Hall effect [PDF]

open access: yes, 2015
Both topological crystalline insulators surfaces and graphene host multi-valley massless Dirac fermions which are not pinned to a high-symmetry point of the Brillouin zone.
Fu, Liang, Venderbos, Jörn W. F.
core   +2 more sources

Energy method in efficient estimation of elastic buckling critical load of axially loaded three-segment stepped column [PDF]

open access: yesFME Transactions, 2013
This paper treats the elastic stability of three-segment stepped column that is subjected to axial concentrated compressive forces using the strain energy method.
Zdravković Nebojša   +2 more
doaj  

Mechanical Behavior of High-Performance Yarns Transversely Loaded by Different Indenters

open access: yesFibers, 2018
In this study, we performed off-axis transverse loading experiments to study the stress concentration developed in a high-performance yarn with different indenters.
Boon Him Lim, Jou-Mei Chu, Wayne Chen
doaj   +1 more source

A fluid-structure interaction model accounting arterial vessels as a key part of the blood-flow engine for the analysis of cardiovascular diseases

open access: yesFrontiers in Bioengineering and Biotechnology, 2022
According to the classical Windkessel model, the heart is the only power source for blood flow, while the arterial system is assumed to be an elastic chamber that acts as a channel and buffer for blood circulation.
Heming Cheng   +13 more
doaj   +1 more source

Observation of Quantum Hall Valley Skyrmions [PDF]

open access: yes, 2005
We report measurements of the interaction-induced quantum Hall effect in a spin-polarized AlAs two-dimensional electron system where the electrons occupy two in-plane conduction band valleys.
E. P. De Poortere   +5 more
core   +1 more source

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