Results 41 to 50 of about 385 (175)

Characterization and Testing of an Electrorheological Fluid Valve for Control of ERF Actuators

open access: yesActuators, 2015
Previous studies of electrorheological fluids (ERFs) were motivated by brake, clutch, damping, haptic and resistive applications, but never motivated towards developing an ERF based-hydraulic rotary actuator. One design to make such an actuator is to use
Quang-Anh Nguyen   +3 more
doaj   +1 more source

Weak Solutions for a Class of Nonlocal Singular Problems Over the Nehari Manifold

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 11, Page 12360-12378, 30 July 2026.
ABSTRACT In this paper, we consider a nonlocal model of dilatant non‐Newtonian fluid with a Dirichlet boundary condition. By using the Nehari manifold and fibering map methods, we obtain the existence of at least two weak solutions, with sign information.
Zhenfeng Zhang   +2 more
wiley   +1 more source

Periodic Points of Modular Firmly Mappings in the Variable Exponent Sequence Spaces ℓp(·)

open access: yesMathematics, 2021
In this work, we investigate the existence of periodic points of mappings defined on nonconvex domains within the variable exponent sequence spaces ℓp(·).
Afrah A. N. Abdou, Mohamed A. Khamsi
doaj   +1 more source

Existence of Weak Solutions for the Equations of a Non‐Newtonian Fluid With Non‐Standard Growth

open access: yesZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Volume 106, Issue 7, July 2026.
ABSTRACT We consider the equations of a non‐Newtonian incompressible fluid in a general time‐space cylinder ΩT=Ω×(0,T)⊂Rn×R,n≥2$\Omega _{T} = \Omega \times (0,T) \subset \mathbb {R}^{n} \times \mathbb {R}, n \ge 2$. We assume that the rheology of the fluid is changing with respect to time and space, and satisfies, for each (x,t)∈ΩT$(x,t) \in \Omega _{T}
Hyeong‐Ohk Bae, Jörg Wolf
wiley   +1 more source

A magnetorheological fluid damper for robust vibration control of flexible rotor-bearing systems: A comparison between sliding mode and fuzzy approaches [PDF]

open access: yesJournal of Theoretical and Applied Vibration and Acoustics, 2017
Squeeze Film Dampers (SFD) are commonly used for passive vibration control of rotor-bearing systems. The Magnetorheological (MR) and Electrorheological (ER) fluids in SFDs give a varying damping characteristic to the bearing that can provide active ...
Ali Kamalie Egoli   +2 more
doaj   +1 more source

Bio‐Inspired Molecular Events in Poly(Ionic Liquids)

open access: yesAdvanced Functional Materials, Volume 36, Issue 38, 11 May 2026.
Originating from dipolar and polar inter‐ and intra‐chain interactions of the building blocks, the topologies and morphologies of poly(ionic liquids) (PIL) govern their nano‐ and micro‐processibility. Modulating the interactions of cation‐anion pairs with aliphatic dipolar components enables the tunability of properties, facilitated by “bottom‐up ...
Jiahui Liu, Marek W. Urban
wiley   +1 more source

Scalable High‐Force Zipping Electrostatic Actuators

open access: yesAdvanced Intelligent Systems, Volume 8, Issue 5, May 2026.
An electrostatic actuator architecture is presented that combines high energy density with forces and strokes suited for wearable soft robotics. By folding patterned thin films into a scalable honeycomb of zipping units, performance becomes tunable through series–parallel design, achieving over 40 N and 28 J/kg.
Fabio Caruso   +2 more
wiley   +1 more source

Electric Field-Responsive Mesoporous Suspensions: A Review

open access: yesNanomaterials, 2015
This paper briefly reviews the fabrication and electrorheological (ER) characteristics of mesoporous materials and their nanocomposites with conducting polymers under an applied electric field when dispersed in an insulating liquid.
Seung Hyuk Kwon   +2 more
doaj   +1 more source

External Vibrations on Early‐Age Concrete: A Review

open access: yesEngineering Reports, Volume 8, Issue 5, May 2026.
Scientific illustration of external vibration, their influencing properties and effects, possible outcomes and measures adapted. ABSTRACT Early‐age concrete exhibits limited mechanical strength, making it highly susceptible to external disturbances such as vibrations from construction activities, traffic, or nearby machinery which can disrupt internal ...
Parvathy Kizhakkiniyedath Mohanan   +1 more
wiley   +1 more source

Microelectromechanical system‐based devices for the diagnosis, treatment, and monitoring of ophthalmic diseases

open access: yesInterdisciplinary Medicine, Volume 4, Issue 3, May 2026.
Due to the characteristics of miniaturization, high sensing performance, integration, and high comfort, MEMS‐based devices were employed to design sensors, imaging systems, drug delivery systems, retinal prosthesis, surgical tools, and wearable products for the ophthalmic disease diagnosis, treatment, and monitoring.
Yaling Peng   +10 more
wiley   +1 more source

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