scholarly journals A study of rolling resistance of electrorheological fluids impregnated polymer fibers as a function of electric field

2015 ◽  
Author(s):  
Vishal Zade ◽  
Xiaomin Zhang ◽  
Shing-Chung Wong
Keyword(s):  
Electric Field ◽  
Rolling Resistance ◽  
Polymer Fibers ◽  
Electrorheological Fluids

Polyzwitterionic aqueous solutions – a new class of electrorheological fluids

e-Polymers ◽  
2002 ◽  
Vol 2 (1) ◽  
Author(s):  
George S. Georgiev ◽  
Anna A. Tzoneva ◽  
Velin A. Spassov
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Aqueous Solutions ◽  
Structural Organization ◽  
Cluster Formation ◽  
Electrorheological Fluids ◽  
Core Shell ◽  
New Class ◽  
Polyelectrolyte Solutions ◽  
Direction Opposite

AbstractIt has been established that the electroviscosity effect of polyzwitterionic (PZI) aqueous solutions is more considerable than and acts in a direction opposite to that of aqueous polyelectrolyte solutions. Temperature and electric field strength influence the electroviscosity of PZI aqueous solutions in parallel, though the reasons for these effects are quite different. The unusual electroviscosity behaviour of PZI solutions is explained by a ‘core-shell’ model for the structural organization of PZI macromolecules, suggesting that cluster formation is due to intensive dipoledipole interactions between monomer units of the same or of different macromolecules.

scholarly journals Microconvection heat transfer in electrorheological fluids in rotating electric field

2013 ◽  
Vol 412 ◽  
pp. 012008
Author(s):  
A A Mokeev ◽  
S A Gubarev ◽  
E V Korobko ◽  
N A Bedik
Keyword(s):  
Heat Transfer ◽  
Electric Field ◽  
Electrorheological Fluids

Water-Activated Bacterial Cellulose-Based Electrorheological Fluids and Electromechanical Response of Artificial Muscle Based on Electrorheological Fluids and Siloxane Gel

2009 ◽  
Vol 87-88 ◽  
pp. 143-148
Author(s):  
Nai Xu ◽  
De Min Jia
Keyword(s):  
Field Strength ◽  
Electric Field ◽  
Electric Field Strength ◽  
Water Content ◽  
Bacterial Cellulose ◽  
Yield Stress ◽  
Particle Concentration ◽  
Electrorheological Fluids ◽  
Water Yield ◽  
Composite Gel

Electrorheological (ER) characteristics of ER fluids (ERF) containing bacterial cellulose (BC) particles in silicone oil was investigated as a function of particle water content, DC electric field strength and particle concentration. It was found that the existence of water in BC particles strongly influenced the performance of water-activated ERF based on BC particles. Around 8.8 wt% water, yield stress reached its maximum valve of 1118 Pa after which it decreased with increasing water content. At the same water content, yield stress increased linearly with increasing in either electric field strength or particle concentration. The ERF based on BC particles was introduced into the poly (dimethylsiloxane) (PDMS) gels to prepare electric field sensitive composite gel. Electric fields were applied to these composite gels using flexible electrodes. Compressions of these gels with varying PDMS/ERF ratios were confirmed by the electrode displacement. It was found that 50/50 PDMS/ERF gel exhibited the maximum displacement of 102um at 2 kV/mm electric field.

Frequency dependence of electrorheological fluids in an ac electric field

1995 ◽  
Vol 52 (6) ◽  
pp. 6329-6332 ◽  
Author(s):  
Kunquan Lu ◽  
Weijia Wen ◽  
Chenxi Li ◽  
Sishen Xie
Keyword(s):  
Electric Field ◽  
Frequency Dependence ◽  
Electrorheological Fluids ◽  
Ac Electric Field

THE ELECTRORHEOLOGICAL FLUIDS WITH HIGH SHEAR STRESS

2005 ◽  
Vol 19 (07n09) ◽  
pp. 1065-1070 ◽  
Author(s):  
KUNQUAN LU ◽  
RONG SHEN ◽  
XUEZHAO WANG ◽  
GANG SUN ◽  
WEIJIA WEN
Keyword(s):  
Shear Stress ◽  
Electric Field ◽  
Yield Stress ◽  
High Performance ◽  
Electrorheological Fluids ◽  
Stress Effect ◽  
High Shear ◽  
High Shear Stress ◽  
Effective Factors ◽  
Er Fluids

A series of high performance ER fluids newly manufactured in our laboratory are presented. The yield stress of those ER fluids can reach several tens of kPa, 100 kPa and even 200 kPa, respectively. For understanding the high shear stress effect a model is proposed base on the electric field induced molecular bounding effect. The main effective factors in fabricating the high performance ER are discussed.

PHASE SEPARATION AND TURBIDITY OF ELECTRORHEOLOGICAL FLUIDS

1996 ◽  
Vol 10 (23n24) ◽  
pp. 3093-3101 ◽  
Author(s):  
S. CUTILLAS ◽  
A. MEUNIER ◽  
E. LEMAIRE ◽  
G. BOSSIS ◽  
J. PERSELLO
Keyword(s):  
Electric Field ◽  
Silicone Oil ◽  
Average Length ◽  
Coupling Parameter ◽  
Electrorheological Fluids ◽  
Electrostatic Energy ◽  
Theoretical Interpretation ◽  
Debye Theory ◽  
Induced Aggregation ◽  
Kinetics Of

The turbidity of a suspension of silica particles in a silicone oil is studied in the presence of an electric field. We present experimental results which show a very strong attenuation of a laser beam when the electric field is switched on. We give a theoretical interpretation of these results with the help of a Rayleigh Gans Debye theory applied to cylinders. This model allows us to obtain the average length of the aggregates as a function of the coupling parameter λ, which is me ratio of the electrostatic energy to kT. These results agree with a theoretical prediction and also with the results of Monte-Carlo simulations. The kinetics of the beginning of field induced aggregation can be obtained from the change of the turbidity with time after the application of a voltage step.

ELECTROSTATIC INTERACTIONS FOR PARTICLE ARRAYS IN ELECTRORHEOLOGICAL FLUIDS II: MEASUREMENTS

1994 ◽  
Vol 08 (20n21) ◽  
pp. 2895-2902 ◽  
Author(s):  
YING CHEN ◽  
H. CONRAD
Keyword(s):  
Shear Modulus ◽  
Electric Field ◽  
Shear Strain ◽  
Enhancement Factor ◽  
Shear Force ◽  
Electrostatic Interactions ◽  
Silicone Oil ◽  
Electrorheological Fluids ◽  
Proportionality Constant ◽  
Er Fluids

The force required to shear one-, two- and three-chain clusters of 230 µm dia. glass beads in silicone oil was measured. In each case the shear force was proportional to the shear strain, the proportionality constant increasing with electric field and number n of chains in the cluster. The derived shear modulus G also increased with n. An extrapolation of the present results suggests that a cluster of 4–5 chains would give the stress enhancement factor of 10–20 observed for real ER fluids.

Sign in / Sign up

Export Citation Format

Share Document