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Magneto sensitive material in noise and vibration engineering
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Structural and vibroacoustics.ORCID iD: 0000-0001-5760-3919
2005 (English)In: Proceedings of ISMA 2004: International Conference on Noise and Vibration Engineering, Vols 1-8 / [ed] Sas, P; DeMunck, M, 2005, 217-223 p.Conference paper (Refereed)
Abstract [en]

Structure-borne sound properties of magneto sensitive material, with possible applications in automotive and aerospace engineering, are presented. The dynamic properties of isotropic magneto sensitive polymer are examined through experiments within the audible frequency range while applying an external magnetic field. The shear modulus for this manufacturer convenient material, consisting of dispersed irregular, micro-meter sized iron particles in a rubber matrix, is found to depend strongly on both frequency and magnetic field, while the loss factor is almost independent of those factors. Magneto sensitive material applied in noise and vibration engineering promise to have more functionality than conventional materials while actively, rapidly, continuously and reversibly change the dynamic properties. A highly interesting example is the smart vibration isolator where the magneto sensitive rubber rapidly and actively changes the rigid body and dynamic stiffness peak frequencies thereby effectively increasing the isolation also within the audible frequency domain.

Place, publisher, year, edition, pages
2005. 217-223 p.
National Category
Applied Mechanics
URN: urn:nbn:se:kth:diva-43316ISI: 000239814900015ScopusID: 2-s2.0-13344262662ISBN: 90-73802-82-2OAI: diva2:448518
2004 International Conference on Noise and Vibration Engineering, ISMA, Leuven, Belgium, 20-22 September 2004

QC 20141212

Available from: 2011-10-17 Created: 2011-10-14 Last updated: 2014-12-12Bibliographically approved

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