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Study of magnetorheology and sensing capabilities of MR elastomers

Journal Article


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Abstract


  • This study focuses on the magnetorheology and sensing capability of graphite based

    Magnetorheological Elastomers (Gr MREs). By introducing graphite (Gr) to conventional

    MREs, the Gr MREs are derived. The anisotropic sample with 20% graphite weight fraction

    was selected to be compared with anisotropic conventional MREs. The microstructures of

    anisotropic Gr MREs and conventional MREs were observed. Both steady state tests and

    dynamic tests were conducted to study rheological properties of the samples. For dynamic

    tests, the effects of strain amplitude, and frequency on both storage modulus and loss modulus

    were measured. For sensing capability, the resistance of selected Gr MREs under different

    magnetic fields and external loadings is measured with a multi-meter. Either higher magnetic

    field or more external loading results in the resistance increment. Based on an ideal assumption

    of perfect chain structure, a mathematical model was proposed to investigate the relationship

    between the MRE resistance with the external loadings. In this model, the current flowing

    through the chain structure consists of both tunnel current and conductivity current, both of

    which depends on external loadings. The modelling parameters were identified and

    reconstructed from comparison with experimental results. The comparison indicates that both

    experimental results and modelling prediction agree favourably well.

Publication Date


  • 2013

Citation


  • Tian, T., Li, W. H. & Alici, G. (2013). Study of magnetorheology and sensing capabilities of MR elastomers. Journal of Physics, 412 012037-1-012037-10.

Scopus Eid


  • 2-s2.0-84875757953

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1496&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/491

Has Global Citation Frequency


Start Page


  • 012037-1

End Page


  • 012037-10

Volume


  • 412

Place Of Publication


  • United Kingdom

Abstract


  • This study focuses on the magnetorheology and sensing capability of graphite based

    Magnetorheological Elastomers (Gr MREs). By introducing graphite (Gr) to conventional

    MREs, the Gr MREs are derived. The anisotropic sample with 20% graphite weight fraction

    was selected to be compared with anisotropic conventional MREs. The microstructures of

    anisotropic Gr MREs and conventional MREs were observed. Both steady state tests and

    dynamic tests were conducted to study rheological properties of the samples. For dynamic

    tests, the effects of strain amplitude, and frequency on both storage modulus and loss modulus

    were measured. For sensing capability, the resistance of selected Gr MREs under different

    magnetic fields and external loadings is measured with a multi-meter. Either higher magnetic

    field or more external loading results in the resistance increment. Based on an ideal assumption

    of perfect chain structure, a mathematical model was proposed to investigate the relationship

    between the MRE resistance with the external loadings. In this model, the current flowing

    through the chain structure consists of both tunnel current and conductivity current, both of

    which depends on external loadings. The modelling parameters were identified and

    reconstructed from comparison with experimental results. The comparison indicates that both

    experimental results and modelling prediction agree favourably well.

Publication Date


  • 2013

Citation


  • Tian, T., Li, W. H. & Alici, G. (2013). Study of magnetorheology and sensing capabilities of MR elastomers. Journal of Physics, 412 012037-1-012037-10.

Scopus Eid


  • 2-s2.0-84875757953

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1496&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/491

Has Global Citation Frequency


Start Page


  • 012037-1

End Page


  • 012037-10

Volume


  • 412

Place Of Publication


  • United Kingdom