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    • Keywords


      Smart materials; vibration; mechanical testing; nanocomposites.

    • Abstract


      The incorporation of nanoparticles of iron in a natural rubber matrix leads to flexible magnetorheological (MR) materials. Rod-shaped MR elastomers based on natural rubber and nanosized iron have been moulded both with and without the application of an external magnetic field during curing. These MR elastomer rods and filler material were characterized by X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. Magnetic properties were investigated by using vibrating sample magnetometry. Microactuation studies were carried out by employing a laser Doppler vibrometer. It is seen that microactuation of field cured samples have been enhanced by two times when compared with that of zero field cured samples. The effect of alignment of magnetic particles during field-assisted curing was also studied by using a dynamic mechanical analyzer. A plausible model is put forwarded to explain the observed enhancement of actuation for field cured samples.

    • Author Affiliations


      M P Vasudevan1 2 P M Sudeep1 3 I A Al-Omari4 Philip Kurian5 P M Ajayan6 T N Narayanan3 M R Anantharaman1

      1. Department of Physics, Cochin University of Science and Technology, Cochin 682022, India
      2. Department of Physics, Sree Sankara Vidya Peetom College, Valayanchirangara, Cochin 683556, India
      3. TIFR Centre for Interdisciplinary Sciences, Hyderabad 500075, India
      4. Department of Physics, Sultan Qaboos University, Muscat, P.O. Box 36, Code 123, Oman
      5. Department of Polymer Science andRubber Technology, Cochin University of Science and Technology, Cochin 682022, India
      6. Department of Materials Science and Nanoengineering, Rice University, Houston, TX 77005, USA
    • Dates

  • Bulletin of Materials Science | News

    • Dr Shanti Swarup Bhatnagar for Science and Technology

      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
      Chemical Sciences 2020

      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
      Physical Sciences 2020

    • Editorial Note on Continuous Article Publication

      Posted on July 25, 2019

      Click here for Editorial Note on CAP Mode

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