• Title/Summary/Keyword: MRP(Magnetic Reactive Powder)

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Experimental Evaluation on Shear Modulus of MRE due to MRP Coating and Induced Current (Magnetic Reactive Particle 코팅 및 인가전류에 따른 Magnetorheological Elastomer 의 전단계수 측정)

  • Oh, Jae-Eung;Jeong, Un-Chang;Kim, Jin-Su;Yoon, Jung-Min;Roh, Jeong-Joon
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2014.10a
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    • pp.927-929
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    • 2014

  • MRE(Magneto-rheological Elastomer) is a material which shows reversible and various modulus in magnetic field. Comparing to conventional rubber vibration isolator, MREs are able to absorb broader frequency range of vibration. These characteristic phenomena result from the orientation of magnetic particle (i.e., chain-like formation). Magnetic reactive powder(MRP), having rapid magnetic reaction, was selected as a magnetic particle to give magnetic field reactive modulus. The mechanical properties of manufactured MREs were measured with the application of magnetic field. The analysis of MR effect was carried out by FFT analyzer with various induced current. As induced magnetic field intensity increased and coated with MRP, increment of MR effect was observed.

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Measurement of mechanical properties of Magneto-rhological Elastomer due to current and volume ratio of Carbonyl Iron Power (인가전류 세기와 CIP 성분비에 따른 MRE 의 기계적 물성 측정)

  • Oh, Jae-Eung;Yoon, Ji-Hyun;Yoon, Kyu-Seo;Chung, Kyung-Ho;Cho, Hyun-Chul;Lee, Seong-Hoon
    • Proceedings of the KSME Conference
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    • 2008.11a
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    • pp.791-794
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    • 2008

  • MRE(Magneto-rheological Elastomer) is a material which shows reversible and various modulus in magnetic field. Comparing to conventional rubber vibration isolator, MREs are able to absorb broader frequency range of vibration. These characteristic phenomena result from the orientation of magnetic particle (i.e., chain-like formation) in rubber matrix. In this study, NR was used as a matrix in order to manufacture MREs. Magnetic reactive powder(MRP), having rapid magnetic reaction, was selected as a magnetic particle to give magnetic field reactive modulus. The mechanical properties of manufactured MREs were measured without the application of magnetic field. The results showed that the tensile property and resilience were decreased while the hardness was increased with the addition of CIP. The analysis of MR effect was carried out by FFT analyzer with various magnetic flux. As the addition of MRP and magnetic flux increased, increment of MR effect was observed.

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Measurement of Shear Modulus Increment Ratio of Magneto-rheological Elastomer based on Silicon Matrix due to Induced Magnetic field (Silicon Matrix MRE 의 인가자기장에 따른 전단계수 증가율 측정)

  • Oh, Jae-Eung;Roh, Jeong-Joon;Lee, Sun-Hoon;Kim, Jin-Su;Jeong, Un-Chang
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
    • /
    • 2014.10a
    • /
    • pp.288-291
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    • 2014

  • MRE(Magneto-rheological Elastomer) is a material which shows reversible and various modulus in magnetic field. Comparing to conventional rubber vibration isolator, MREs are able to absorb broader frequency range of vibration. These characteristic phenomena result from the orientation of magnetic particle (i.e., chain-like formation) in rubber matrix. In this study, Silicon was used as a matrix in order to manufacture MREs. Magnetic reactive powder(MRP), having rapid magnetic reaction, was selected as a magnetic particle to give magnetic field reactive modulus. The mechanical properties of manufactured MREs were measured with the application of magnetic field. The analysis of MR effect was carried out by FFT analyzer with various induced magnetic field. As the addition of CIP and induced magnetic field intensity increased, increment of MR effect was observed.

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