Results 71 to 80 of about 3,761 (206)

Nonlinear ER effects in an ac applied field

open access: yes, 2001
The electric field used in most electrorheological (ER) experiments is usually quite high, and nonlinear ER effects have been theoretically predicted and experimentally measured recently.
D.J. Klingenberg   +16 more
core   +2 more sources

Static shear modulus of electrorheological fluids [PDF]

open access: yesPhysical Review E, 2006
We report measurements of the static shear modulus of electrorheological (ER) fluids consisting of water-wetted silica microspheres in silicone oil. A shear-annealing method, using creep-recovery (CR) cycles under an external electric field, is used to enhance ER properties of the fluid.
Shi, Lihong   +3 more
openaire   +3 more sources

Soft Valves: A Review of Structures, Materials, and Modeling

open access: yesAdvanced Intelligent Systems, Volume 6, Issue 8, August 2024.
This article summarizes the current development of soft valves. The article discusses the design principles and applications of soft valves in terms of structure and materials, as well as modeling ideas for soft valves. Finally, the current challenges facing soft valves are outlined and potential solutions to these problems are presented.
Fenglin Han   +5 more
wiley   +1 more source

Complex Fluids in Energy Dissipating Systems

open access: yesApplied Sciences, 2016
The development of engineered systems for energy dissipation (or absorption) during impacts or vibrations is an increasing need in our society, mainly for human protection applications, but also for ensuring the right performance of different sort of ...
Francisco J. Galindo-Rosales
doaj   +1 more source

Reversed Currents in Charged Liquid Bridges

open access: yes, 2017
The velocity profile in a water bridge is reanalyzed. Assuming hypothetically that the bulk charge has a radial distribution, a surface potential is formed that is analogous to the Zeta potential.
Morawetz, Klaus
core   +2 more sources

Novel technique of vibration minimization during hard machining

open access: yesEngineering Reports, Volume 6, Issue 8, August 2024.
This research study examines the performance of electrorheological fluids, also referred to as smart fluids, which have gained popularity because they instantly alter when exposed to an external magnetic or electric field. When high voltage is applied, the ER fluid quickly changes from a viscous liquid to a semisolid state, which is reversible.
Aditi D. Apte   +6 more
wiley   +1 more source

Features of the Mechanisms of Conductivity of the Electrorheological Fluids With Double Doped TiO2 Particles Under External Temperature Effects

open access: yesFrontiers in Materials, 2019
Electrophysical and rheological characteristics of ER fluids with TiO2 particles doped with aluminum and phosphorus and having anatase structure are considered in an extended temperature range (5–100°C). The mechanisms of leakage currents in the ER fluid
Evguenia V. Korobko, Zoya A. Novikova
doaj   +1 more source

Generalized noncooperative Schrödinger–Kirchhoff–type systems in RN$\mathbb {R}^N$

open access: yesMathematische Nachrichten, Volume 297, Issue 6, Page 2092-2121, June 2024.
Abstract We consider a class of noncooperative Schrödinger–Kirchhof–type system, which involves a general variable exponent elliptic operator with critical growth. Under certain suitable conditions on the nonlinearities, we establish the existence of infinitely many solutions for the problem by using the limit index theory, a version of concentration ...
Nabil Chems Eddine, Dušan D. Repovš
wiley   +1 more source

Liquid Metal Actuators: A Comparative Analysis of Surface Tension Controlled Actuation

open access: yesAdvanced Materials, Volume 36, Issue 1, January 4, 2024.
This review summarizes the operation and design principles of surface tension‐controlled actuation by liquid metals and discusses their performance and functionalities. Theoretical pathways toward higher performances, thanks to the unique scaling law of surface tension, are analyzed and compared to other popular soft actuators.
Jiahe Liao, Carmel Majidi, Metin Sitti
wiley   +1 more source

Field strength dependence of the high-frequency viscoelastic relaxation process in polyaniline/silicone oil electrorheological suspensions

open access: yeseXPRESS Polymer Letters, 2008
Polyaniline (PANI) was synthesized via oxidative coupling polymerization in acid conditions and de-doped in ammonia solution. The electrorheological (ER) properties of the PANI/silicone oil suspensions were investigated in the oscillatory mode shear ...
doaj   +1 more source

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