Results 51 to 60 of about 37,005 (331)

Empirical decomposition method for modeless component and its application to VIV analysis

International Journal of Naval Architecture and Ocean Engineering, 2015
Aiming at accurately distinguishing modeless component and natural vibration mode terms from data series of nonlinear and non-stationary processes, such as Vortex-Induced Vibration (VIV), a new empirical mode decomposition method has been developed in ...
Zheng-Shou Chen, Yeon-Seok Park, Li-ping Wang, Wu-Joan Kim, Meng Sun, Qiang Li   +5 more
doaj   +1 more source

Power Control Optimization of an Underwater Piezoelectric Energy Harvester [PDF]

, 2018
Over the past few years, it has been established that vibration energy harvesters with intentionally designed components can be used for frequency bandwidth enhancement under excitation for sufficiently high vibration amplitudes.
Aramendia Iradi, Iñigo, Fernández Gámiz, Unai, López Guede, José Manuel, Sancho Saiz, Javier, Zulueta Guerrero, Ekaitz   +4 more
core   +3 more sources

Digital Actuation Control of Soft Robotic Origami With Self‐Folding Liquid Crystal Elastomer Hinges

Advanced Functional Materials, EarlyView.
Self‐folding soft‐rigid hybrid robotic origami is enabled by liquid crystal elastomer actuators with embedded Joule heating and closed‐loop digital control. Digitally addressable hinges provide reversible and programmable transitions between distinct folded states while maintaining actuation performance at high cycle counts (over 1500).
David C. Bershadsky, Tuo Zhao, Glaucio H. Paulino, Emily C. Davidson   +3 more
wiley   +1 more source

Influence of blade aerodynamic model on the prediction of helicopter high-frequency airloads [PDF]

, 2011
Brown’s vorticity transport model has been used to investigate the influence of the blade aerodynamic model on the accuracy with which the high-frequency airloads associated with helicopter blade–vortex interactions can be predicted.
Benoît B., Boyd D. D., Duraisamy K., Hopkins A. S., Johnson W., Kelly M. E., Küssner H. G., Leishman J. G., Lim J. W., Lim J. W., Mary E. Kelly, Pengel K., Richard E. Brown, Schneider O., Thom A., Toro E. F., van der Wall B. G., Whitehouse G., Yu Y. H.   +18 more
core   +1 more source

A New Threshold Switching Device With Tunable Negative Differential Resistance Based on ErMnO3 Polymorphs

Advanced Functional Materials, EarlyView.
Polymorph engineering in ErMnO3 enables low‐voltage, forming‐free threshold switching with tunable negative differential resistance. Conducting orthorhombic regions embedded in an insulating hexagonal matrix provide controlled Joule‐heating‐enhanced Poole–Frenkel transport. The hexagonal phase prevents excessive heating and breakdown.
Rong Wu, Florian Maudet, Thanh Luan Phan, Wassim Hamouda, Richard Schroedter, Ahmet Samil Demirkol, Ronald Tetzlaff, Veeresh Deshpande, Catherine Dubourdieu   +8 more
wiley   +1 more source

Experimental investigation of the flow-induced vibration of a curved circular cylinder [PDF]

, 2012
Experiments have been conducted to investigate the vortex-induced vibration (VIV) response of a rigid section of a curved circular cylinder. Two curved configurations, a concave and a convex, were tested regarding the direction of the flow, in addition ...
Assi, Gustavo, Freire, Cesar, Korkischko, Ivan, Srinil, Narakorn   +3 more
core  

From Wafers to Electrodes: Transferring Automatic Optical Inspection (AOI) for Multiscale Characterization of Smart Battery Manufacturing

Advanced Functional Materials, EarlyView.
Automat optical inspection (AOI) techniques in semiconductor fabrication can be leveraged in battery manufacturing, enabling scalable detection and analysis of electrode‐ and cell‐level imperfections through AI‐driven analytics and a digital‐twin framework.
Jianyu Li, Ertao Hu, Wei Wei, Feifei Shi
wiley   +1 more source

A Simplified Nonlinear Model of Vertical Vortex-Induced Force on Box Decks for Predicting Stable Amplitudes of Vortex-Induced Vibrations

Engineering, 2017
Wind-tunnel tests of a large-scale sectional model with synchronous measurements of force and vibration responses were carried out to investigate the nonlinear behaviors of vertical vortex-induced forces (VIFs) on three typical box decks (i.e., fully ...
Le-Dong Zhu, Xiao-Liang Meng, Lin-Qing Du, Ming-Chang Ding   +3 more
doaj   +1 more source

Investigation on the Mechanism and Parametric Description of Non-Synchronous Blade Vibration

Entropy, 2021
In order to explore the mechanism during the process of the non-synchronous vibration (NSV), the flow field formation development is investigated in this paper. Based on the fluid–structure interaction method, the vibration of rotor blades is found to be
Mingming Zhang, Anping Hou, Yadong Han
doaj   +1 more source

Preliminary instability-analysis of deepwater riser with fairings [PDF]

, 2009
Instability of deepwater riser with fairings is investigated in this study. Despite the advantages over other devices for suppressing vortex-induced-vibration (VIV), fairings may be susceptible to flutter type instability.
Huang, Shan, Khorasanchi, Mahdi
core   +1 more source