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27 April 2011 Thick magnetorheological elastomers
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In the present study, two types of MRE with different concentrations, and circular and rectangular shapes having thicknesses from 6.35mm to a maximum of 25.4mm are prepared. These samples are tested under quasi-static compression and quasi-static double lap shear. It is observed that the measured off-state shear modulus has large variations with increase in the thickness of the sample. The measured shear modulus from the double lap shear test results, as well as the Young's modulus from the compression tests at zero-field, follows a logarithmic trend. With the increase in applied magnetic field, it is observed that the change in modulus shifted from a linear at lower field to a nonlinear trend at higher fields. In addition it is observed that the controllability of MRE is more in the compression mode than in the shear mode.
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Praveen Mysore, Xiaojie Wang, and Faramarz Gordaninejad "Thick magnetorheological elastomers", Proc. SPIE 7977, Active and Passive Smart Structures and Integrated Systems 2011, 797711 (27 April 2011);

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