Results 111 to 120 of about 573,006 (357)
Methods for separating the noise produced by the wheels and track during a train pass-by
Railway Engineering ScienceRolling noise is produced by vibration of the wheels and track, induced by their combined surface roughness. It is important to know the relative contributions of the different sources, as this affects noise control strategies as well as acceptance ...
David Thompson +6 more
doaj +1 more source
Candidate proof mass actuator control laws for the vibration suppression of a frame [PDF]
The vibration of an experimental flexible space truss is controlled with internal control forces produced by several proof mass actuators. Four candidate control law strategies are evaluated in terms of performance and robustness.
Inman, Daniel J., Umland, Jeffrey W.
core +1 more source
Piezoceramics-based Devices for Active Balancing of Flexible Shafts [PDF]
, 2006 This paper focuses on vibration control of flexible shafts by means of rotorfixed piezoelectric materials. The target is to realize compact solutions for the suppression of problematic resonant vibration at so-called flexural critical speeds.
Boer, A. de, Sloetjes, P.J.
core +1 more source
Photoswitching Conduction in Framework Materials
Advanced Functional Materials, EarlyView.This mini‐review summarizes recent advances in state‐of‐the‐art proton and electron conduction in framework materials that can be remotely and reversibly switched on and off by light. It discusses the various photoswitching conduction mechanisms and the strategies employed to enhance photoswitched conductivity.
Helmy Pacheco Hernandez +4 more
wiley +1 more source
The band gap variation of a two dimensional binary locally resonant structure in thermal environment
AIP Advances, 2017 In this study, the numerical investigation of thermal effect on band gap dynamical characteristic for a two-dimensional binary structure composed of aluminum plate periodically filled with nitrile rubber cylinder is presented.
Zhen Li, Xian Wang, Yue-ming Li
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Biomimetic Iridescent Skin: Robust Prototissues Spontaneously Assembled from Photonic Protocells
Advanced Functional Materials, EarlyView.Uniform nanoparticles are induced to form arrays (photonic crystals) in the cores of biopolymer capsules, endowing these ‘protocells’ with structural color. These protocells are then assembled into large self‐standing objects, i.e., prototissues, with robust mechanical properties as well as iridescent optical properties.
Medha Rath +6 more
wiley +1 more source
AIP Advances, 2018 A study on dynamical characteristics of a ternary locally resonant phononic crystal (PC) plate (i.e., hard scatterer with soft coating periodically disperse in stiff host matrix) is carried out in this paper.
Yun Zhu, Zhen Li, Yue-ming Li
doaj +1 more source
Distributed Absorber for Noise and Vibration Control [PDF]
, 2011 Michel Azoulay +3 more
openalex +1 more source
Backbone Heterojunction Photocatalysts for Efficient Sacrificial Hydrogen Production
Advanced Functional Materials, EarlyView.Herein, a ‘single‐component’ organic semiconductor photocatalyst is presented in which a molecular donor is bonded to a polymer acceptor. The resultant material demonstrates exceptional photocatalytic activity for hydrogen evolution in aqueous triethylamine with an outstanding external quantum efficiency of 38% at 420 nm.
Richard J. Lyons +11 more
wiley +1 more source
A Lightweight Detection Algorithm for Strawberry Ripeness
IEEE AccessThis paper presents advancements in a streamlined maturity detection algorithm specifically tailored for strawberry harvesting, with a focus on achieving rapid and accurate identification of strawberry ripeness across challenging and varied environments.
Gaofeng Xu, Zhengcai Wang
doaj +1 more source