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A modified free decay test apparatus for the characterization of soft magnetic gels in the presence of magnetic fields
Venkateswara Rao. P, Maniprakash. S, Srinivasan. S.M
Pages - 179 - 190     |    Revised - 30-04-2010     |    Published - 10-06-2010
Volume - 4   Issue - 2    |    Publication Date - May 2010  Table of Contents
Free decay test in Shear mode, Magnetorheological gel / elastomer, vibration control, damping applications
This paper presents the development of a simple free decay test apparatus that can be a cost effective alternative to the popular expensive dynamical mechanical analyzers useful for characterization of the dynamic characteristics of soft magnetic composite gels in the presence of variable magnetic field. This apparatus also addresses the common difficulty faced in dynamical mechanical analyzers to conduct the characteristics of deformation dependent mechanical characteristics especially for large deformations, sometimes to the order of 100% that may be necessary for highly compliant polymeric materials. In addition, this apparatus can easily be fitted or modified to facilitate the application of magnetic field. The apparatus is designed to test thin sheet specimens of the magnetic gels in the shear mode at room temperature. As an example, magnetic composite gels prepared with micron sized polarizable particles (carbonyl iron particles) interspersed in a polymer matrix gel are used to show the effectiveness of the apparatus. The compliance of this magnetic gel can be varied under the influence of an external magnetic field. Deviations from the linear material behavior can be captured using the appropriate equations that relate the linear assumptions made. Such deviations can then be used in determining the large deformation dependent characteristics of the gel specimen. Thus, it is demonstrated that the apparatus is a cost effective and useful tool for purposes of testing soft and compliant magnetic composite gels used for damping applications.
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1 Carlson, J. D. and M. R. Jolly (2000). MR fluid, foam and elastomer devices. Mechatronics, 10, 555-569.
2 Deng, H. X. and X. L. Gong (2008). Application of magnetorheological elastomer to vibration absorber. Communication in nonlinear science and numerical simulation, 13,1938-1947.
3 Ibrahim,R.A. (2008). Recent advances in nonlinear passive vibration isolators. Journal of sound and vibration, 314, 371-452.
4 Beskok, A., and Srinivasa, A. R.,“Simulation and analysis of a magnetoelastically driven micro-pump”, J. Fluid Eng-T, ASME, 123 (2): 435-438, 2001.
5 Gong, X. L., X. Z. Zhang, and P. Q. Zhang (2005). Fabrication and characterization of isotropic magnetorheological elasomers. Polymer testing 24, 669-676.
6 Hu, Y., Y. L. Wang, X. L. Gong, X. Q. Gong, X. Z. Zhang, W. Q. Jiang, P. Q. Zhang and Z. Y. Chen (2005). New magnetorheological elastomers based on polyurethane/Si- rubber hybrid. Polymer testing, 24, 324-329.
7 Yinling wang, Yuan Hu, Xinglong Gong, Wanquan Jiang, Peiqiang Zhang, Zuyao Chen (2007). Preparation and properties of magnetorheological elastomers based on silicon rubber/polystyrene blend matrix. Journal of applied polymer science, Vol.103, 3143-3149.
8 Fuchs, A, Q. zhang, J. Elkins, F. Gordaninejad and C.Evrensel (2007). Development and characterization of magnetorheological elastomers. J. Applied polymer science, vol.105,2497-2508.
9 Chen, L, X. L Gong, W. Q. Jiang, J. J. Yao, H. X. Deng and W. H. Li (2007). Investigation on magnetorheological elastomers based on natural rubber. J. mater.sci.,.42, 483-5489.
10 G. Y. Zhou . (2003). Shear properties of a magnetorheological elastomer. Smart materials and structures, 12, 139-146.
11 Lokander. M and B. Stenberg (2003). Performance of isotropic magnetorheological rubber materials. Polymer testing, 22, 245-251.
12 Shen.Y, M.F. Golnaraghi and G.R. Heppler (2004). Experimental research and modeling of magnetorheological elastomers. Journal of intelligent material systems and structures, 15, 27-35.
13 Sun.T. L., Gong, X. L., Jiang. W. Q., Li.J.F., Xu. Z. B., and Li. W. H. (2008). Study on the damping properties of magnetotheological elastomers based on cis-polybutadiebe rubber. Polymer testing, 27, 520-526.
14 Abramchuk S S, D.A. Grishin, E.Yu. Kramarenko, G.V. Stepanov and A.R. Khokhlov (2006). Effect of Homogeneous magnetic field on the mechanical behavior of soft magnetic elastomers under compression. Polymer science, 48, 138-145.
15 Popp. K.M, X.Z. Zhang, W.H Li and P.B. Kosasih (2009). MRE properties under shear and squeeze modes and applications. Journal of physics: Conference series 149, 012095, 1-4.
16 Stepanov, G. V., S. S. Abramchuk, D. A. Grishin, L. V. Nikitin, E. Yu. Kramarenko and A.R.Khokhlov (2007). Effect of a homogeneous Magnetic field on the viscoelastic behavior of magnetic elastomers. Polymer, 48 (2007) 488-495.
17 H. Bose and R. Roder (2009). Magnetorheological elastomers with high variability of their mechanical properties. Journal of physics: Conference series 149, 012090, 1-6.
18 Terry V.Pearce. (2006). “Jelly Blocks and Jelly Letters”, U.S. Patent. 7,101,247 B2.
19 J. Venkataraghavan, Compliant mechanisms, Master’s thesis, Mechanical Engineering, Texas A&M University, College Station, Texas, 2001.
20 J.Travis and J. Kring.(2006). LabVIEW for Everyone: Graphical programming made easy and fun ed.3. Prentice Hall.
21 Thomson W.T and Dahleh M.D. (2003). Theory of vibration with applications, fifth edition, Pearson Education Pvt. Ltd. ,Singapore.
Mr. Venkateswara Rao. P
- India
Mr. Maniprakash. S
- India
Professor Srinivasan. S.M
- India