Results 11 to 20 of about 1,892,709 (308)

Aerodynamic Effects of Ceiling and Ground Vicinity on Flapping Wings

open access: yesApplied Sciences, 2022
The combined ceiling and ground effect on the aerodynamics of a hovering flapping wing is investigated using numerical simulations. In the simulations, the wing was located between the ceiling and the ground.
Xueguang Meng   +4 more
doaj   +1 more source

Tunable photon blockade in a hybrid system consisting of an optomechanical device coupled to a two-level system [PDF]

open access: yes, 2015
We study photon blockade and anti-bunching in the cavity of an optomechanical system in which the mechanical resonator is coupled to a two-level system (TLS).
Gu, Xiu   +4 more
core   +2 more sources

Bio-inspired nano rotor investigation based on UVLM

open access: yesBiosurface and Biotribology, 2019
Nano rotor is of great value in military and civilian applications. Due to its nano size, it works at an ultra-low Reynolds number and aerodynamic performance deteriorates dramatically.
Zhao Shanyong   +4 more
doaj   +1 more source

Experimental investigation on electromechanical deformation of dielectric elastomers under different temperatures

open access: yesTheoretical and Applied Mechanics Letters, 2015
Under an applied voltage, dielectric elastomers (DEs) produce an actuation strain that is nonlinear, partly because of the material properties. In this study, an experimental characterization is conducted to evaluate how the ambient temperature and pre ...
Lei Liu   +7 more
doaj   +1 more source

Mechanical strength of tooth fragment reattachment

open access: yesJournal of Biomedical Materials Research, 2001
The aim of this study was static and fatigue test investigation of the strength of a tooth fragment reattached with adhesives to the tooth body. Central bovine incisor teeth were used, and standardized fragments were obtained by cutting the incisal edge of the selected teeth.
De Santis R   +6 more
openaire   +7 more sources

Thermo-Elasto-Hydrodynamic Characteristics Analysis of Journal Microbearing Lubricated with Rarefied Gas

open access: yesMicromachines, 2020
Temperature rise and elastic deformation are unavoidable issues occurring in high-speed gas microbearings due to the dominant small-scale fluid dynamics in rarefied gas flow applications.
Yao Wu, Lihua Yang, Tengfei Xu, Wei Wu
doaj   +1 more source

Damage Mechanisms and Mechanical Properties of High-Strength Multiphase Steels [PDF]

open access: yesMaterials, 2018
The usage of high-strength steels for structural components and reinforcement parts is inevitable for modern car-body manufacture in reaching lightweight design as well as increasing passive safety. Depending on their microstructure these steels show differing damage mechanisms and various mechanical properties which cannot be classified ...
Sebastian Heibel   +4 more
openaire   +3 more sources

CNN Training with Twenty Samples for Crack Detection via Data Augmentation

open access: yesSensors, 2020
The excellent generalization ability of deep learning methods, e.g., convolutional neural networks (CNNs), depends on a large amount of training data, which is difficult to obtain in industrial practices.
Zirui Wang   +3 more
doaj   +1 more source

Microstructure and mechanical properties of ductile aluminium alloy manufactured by recycled materials [PDF]

open access: yes, 2014
The present paper introduces the microstructure and mechanical properties of the Al-Mg- Si-Mn alloy made by recycled materials, in which the impurity levels of iron are mainly concerned. It is found that the increased Fe content reduces the ductility and
Fan, ZY   +4 more
core   +1 more source

Latest developments in mechanical properties and metallurgical features of high strength line pipe steels [PDF]

open access: yes, 2013
In response to the increasing demand to improve both transportation efficiency and performance, the steel pipe industry has conducted extensive efforts to develop line pipe steel grades with superior metallurgical and mechanical (strength, toughness and ...
Belato Rosado, Diego   +3 more
core   +2 more sources

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