Results 1 to 10 of about 62,546 (143)

Passive Attenuation of Mechanical Vibrations with a Superelastic SMA Bending Springs: An Experimental Investigation [PDF]

open access: yesSensors, 2022
This work presents an experimental study related to the mechanical performance of a special design spring fabricated with a superelastic shape memory alloy (SMA-SE).
Richard Senko   +7 more
doaj   +2 more sources

Spectral Analysis of ATP-Dependent Mechanical Vibrations in T Cells [PDF]

open access: yesFrontiers in Cell and Developmental Biology, 2021
Mechanical vibrations affect multiple cell properties, including its diffusivity, entropy, internal content organization, and thus—function. Here, we used Differential Interference Contrast (DIC), confocal, and Total Internal Reflection Fluorescence ...
Ishay Wohl, Eilon Sherman
doaj   +2 more sources

Stability and bifurcation analyses for exterior resonant families in Earth-Moon system

open access: yesResults in Physics, 2021
In this work, stability and bifurcation analyses for exterior resonant orbit families have been investigated for a test spacecraft around Earth-Moon system. The initial states are obtained for certain resonance ratio orbits in the two-body problem.
Xu Li   +3 more
doaj   +1 more source

Aerodynamic Characteristics of a Z-Shaped Folding Wing

open access: yesAerospace, 2023
Z-shaped folding wings have the potential to enhance the flight performance of an aircraft, contingent upon its mission requirements. However, the current scope of research on unmanned aerial vehicles (UAVs) with Z-shaped folding wings primarily focuses ...
Yongchang Huang   +2 more
doaj   +1 more source

Exploring Fatigue Effects on Performance Variation of Intensive Brain–Computer Interface Practice

open access: yesFrontiers in Neuroscience, 2021
Motor imagery (MI) is an endogenous mental process and is commonly used as an electroencephalogram (EEG)-based brain–computer interface (BCI) strategy. Previous studies of P300 and MI-based (without online feedback) BCI have shown that mental states like
Songwei Li   +5 more
doaj   +1 more source

Rigid-Flexible Coupled Dynamic and Control for Thermally Induced Vibration and Attitude Motion of a Spacecraft with Hoop-Truss Antenna

open access: yesApplied Sciences, 2022
As space exploration activities are developing rapidly, spacecraft with large antennas have gained wide acceptance in providing reliable telecommunications and astrophysical observations.
Yue Liu   +3 more
doaj   +1 more source

Mathematical Analysis of Two Phase Saturated Nanofluid Influenced by Magnetic Field Gradient

open access: yesInventions, 2021
Nanofluids are composed of nano-sized particles dispersed in a carrier liquid. The present investigation’s aim is to examine theoretically the magneto-thermomechanical coupling phenomena of a heated nanofluid on a stretched surface in the presence of ...
Farhan Khan, Xiaodong Yang
doaj   +1 more source

Effect of electromechanical coupling on locally resonant quasiperiodic metamaterials

open access: yesAIP Advances, 2023
Electromechanical metamaterials have been the focus of many recent studies for use in simultaneous energy harvesting and vibration control. Metamaterials with quasiperiodic patterns possess many useful topological properties that make them a good ...
Joshua LeGrande   +2 more
doaj   +1 more source

A Novel Capacitance-Based In-Situ Pressure Sensor for Wearable Compression Garments

open access: yesMicromachines, 2019
This paper pertains to the development & evaluation of a dielectric electroactive polymer-based tactile pressure sensor and its circuitry. The evaluations conceived target the sensor’s use case as an in-situ measurement device assessing load ...
Steven Lao   +4 more
doaj   +1 more source

Modeling and stability analysis for an ultrasonic motor

open access: yesVietnam Journal of Mechanics, 2007
The development of motor models, adequate for motor design and optimization is still behind the technological state of the art. The reason for this lies in the fact that a couple of years ago the main emphasis regarding ultrasonic motors was on finding ...
Stefanie Gutshchmidt   +2 more
doaj   +1 more source

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