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A Study on the Effects of Multiwall Carbon Nanotubes on Dynamic Stiffness of Hydrophilic-base Magnetorheological Gel

[ Vol. 15 , Issue. 3 ]

Author(s):

Young-Keun Kim, Jangheon Kim, Daeik Jang, Soohyun Kim and Wonsuk Jung*   Pages 319 - 323 ( 5 )

Abstract:


Background: Recently, addition of multi-walled-carbon-nanotubes (MWCNTs) has been researched to enhance the rheological properties of magnetorheological (MR) materials of fluid, elastomer and gel. However, there is a lack of study on the effects of MWCNTs on hydrophilic based MR gels (MRG), which have shown a high potential to be applied in smart vibration control systems.

Objective: This study is aimed to analyze the effect of MWCNTs on the dynamic stiffness of hydrophilic based MRG.

Method: Dynamic stiffness of hydrophilic based MRG was experimentally computed under different magnetic fields and strain amplitudes.

Results: Experimental results indicate that the addition of MWCNTs in hydrophilic MRG showed overall degradation of stiffness variation in contradictory to similar research performed on silicon oil based MR gel.

Conclusion: These contradictory results reveal that MRGs of hydrophilic base have a different interaction with MWCNTs than hydrophobic oil base.

Keywords:

Magnetorheological gel, hybrid composites, multi-walled carbon nanotubes, magnetorheological composites, dynamic stiffness, hydrophilic-base.

Affiliation:

Department of Mechanical and Control Engineering, Handong Global University, Pohang, Kyung-Buk 375-554, Department of Mechanical Engineering, KAIST, Daejeon 305-701, School of Civil and Environmental Engineering, KAIST, Daejeon 305-701, Department of Mechanical Engineering, KAIST, Daejeon 305-701, School of Mechanical Engineering, Chungnam National University, Daejeon 305-764

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