Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Sheila L. Vieira"'
Publikováno v:
Journal of Engineering Materials and Technology. 128:163-168
This paper presents a new magnetorheological (MR) cell design along with a study of the magnetic field, shear rate, and time/shear strain influences on the properties and behavior of a MR fluid tested for long periods of time. The MR cell was designe
Publikováno v:
Journal of Intelligent Material Systems and Structures. 14:99-104
In order to understand the effectiveness of MR fluids in some applications, such as bearings, this work focuses on the properties of MR fluids under squeeze mode, torsional mode and squeeze combined with torsional mode. A special device was designed
Autor:
Antonio Celso Fonseca de Arruda, L. B. Pompeo Neto, S. Henley, Sheila L. Vieira, Masami Nakano, Frank E. Filisko
Publikováno v:
International Journal of Modern Physics B. 15:695-703
It was reported that under the simultaneous stimulus of an electric field and shear, the particles in an ER fluid form lamellar formations in the direction of shear (adhered to one of the electrodes) which may be responsible for the ER activity more
Publikováno v:
Scopus-Elsevier
In this work, the mechanical properties of an anhydrous electrorheological fluid made of carbonaceous particles dispersed in silicone oil were determined in tensile, compression and oscillatory squeeze tests. The mechanical tests were carried out on
Publikováno v:
International Journal of Modern Physics B. 15:1070-1077
The ER fluids containing sulfonated polymer particles were continuously sheared at increasing and decreasing shear rates using a rotary concentric cylinder rheometer and the hysteresis in the up- and down-flow-curves were analyzed. The ER fluids show
An Overview of Magneto- and Electro-Rheological Fluids and their Applications in Fluid Power Systems
Publikováno v:
International Journal of Fluid Power. 2:5-41
The rapid change in viscosity of magnetorheological (MR) and electrorheological (ER) fluids subjected to a magnetic or an electric field, respectively, has attracted the attention of many researchers. However, as MR fluids show higher yield stress th
Publikováno v:
Proceedings of the JFPS International Symposium on Fluid Power. 1999:371-376
The dynamic viscoelasticity of ER suspensions depends on the fluid strain amplitude, the oscillation frequency and the applied electric field strength. This behavior can be explained based on the formation and deformation of ER particle clusters that
Publikováno v:
Electro-Rheological Fluids and Magneto-Rheological Suspensions.
Electrorheology (ER) of ferroelectric materials such as nanometric BaTiO3 is still not fully understood. In this paper, nanoparticles of BaxSr(1-x)TiO3 (where x = 0.8, 0.9 or 1.0) were synthesized using the method of Pechini, calcinated at 950°C, an
Publikováno v:
Aerospace.
MR fluids are smart materials that reversibly change their rheological properties in the presence of a magnetic field. Their capability to support a high range of shear stresses makes them an ideal component of many mechanical devices. However, to be
Autor:
Tony Martinez, Sheila L. Vieira, Duggan James A, Nagi G. Naganathan, Ashish Agrawal, Constantin Ciocanel, Scott B. Robb
Publikováno v:
Electrorheological Fluids and Magnetorheological Suspensions.
A conventional automotive driveline center bearing (CB) consists of a roller bearing that rests on a U-shaped support, which includes a bladder formed by an elastomer, providing damping for radial vibrations between the roller bearing and the housing