Basic Properties of Gel-Structured Electro-Rheological Fluids

Kakinuma, Yasuhiro; Aoyama, Tojiro; Anzai, Hidenobu; Isobe, K.; Tanaka, Katsutoshi

doi:10.1142/9789812702197_0053

Cited by 7 publications

(7 citation statements)

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“…ER gels are functional gels that are fabricated by dispersing fine polymer particles in insulating oil and then adding a gelling agent (Kakinuma et al, 2005b). The ER gel used in this research has the appearance of an elastomer sheet, and thus, its fluidity is not particularly great.…”

Section: Er Gelmentioning

confidence: 99%

Effect of surface conditions of one-side patterned electrodes applied to electrorheological gel

Koyanagi

Miyama

Kakinuma³

et al. 2017

Journal of Intelligent Material Systems and Structures

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The use of a patterned electrode on one side only is expected to be a suitable solution for omitting the wiring to the movable electrode using electrorheological gel. Electrorheological gel is a functional material that changes the force absorbance and frictional force characteristics of its surface in response to the magnitude of an applied electric field. One problem in both the design and the application of electrorheological gels is the wiring of the electrodes that must sandwich the electrorheological gel. Thus, a one-side patterned electrode can be a desirable solution. We investigated the shear stress produced by electrorheological gel applied to such a patterned electrode during rotational and translational motion. Variation of the material of the opposing part reveals that the mechanical and electric characteristics of the electrode meaningfully affect the experienced shear stress.

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Section: Er Gelmentioning

confidence: 99%

Effect of surface conditions of one-side patterned electrodes applied to electrorheological gel

Koyanagi

Miyama

Kakinuma³

et al. 2017

Journal of Intelligent Material Systems and Structures

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“…The mechanism of fixing force generation is different from the one in conventional ER elastomer (Ross and Paul, 1993). Therefore, this phenomenon is called the electroadhesive effect (EA effect; Kakinuma et al, 2005Kakinuma et al, , 2010 Due to the unique functionality, it is expected to apply the ER gel to several devices such as clutch, damper, and fixture device. Figure 1 shows the structures of these application devices (Kakinuma et al, 2006(Kakinuma et al, , 2007.…”

Section: Introductionmentioning

confidence: 99%

Basic Performance Evaluation of Electrorheological Gel in Vacuum Condition

Shida

Kakinuma

Aoyama

et al. 2011

Journal of Intelligent Material Systems and Structures

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ER gel exhibits various adhesive characteristics according to the applied electric field. This characteristic is called the EA effect. The results of a recent study reveal that the EA effect also occurs in a vacuum. Therefore, it is expected that ER gel can be applied to a chucking or damping device in a vacuum process. However, the characteristics of ER gel in a vacuum have not been sufficiently clarified. The purpose of this study is to experimentally evaluate the characteristic of ER gel in a vacuum. The performance of an ERG fixture element used for a silicon wafer in a vacuum is evaluated through shearing tests. The experimental results indicate that the ER gel demonstrates satisfactory performance in a vacuum. Moreover, the outgas released from the ER gel in a vacuum is evaluated, and the influence of the degassing time on the outgas is investigated.

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“…ERG is a functional material, which changes its surface frictional and adhesive property according to the intensity of applied electrical field [3]. In this study, this unique property is named as the ERG effect to distinguish from ER effect.…”

Section: Introductionmentioning

confidence: 99%