Influence of a uniform magnetic field on ultrasonic propagation velocities in magnetic fluids

Issue title: Proceedings of the twelfth International Symposium on Interdisciplinary Electromagnetic, Mechanic and Biomedical Problems, ISEM Bad Gastein

Article type: Research Article

Authors: Motozawa, Masaaki^a | Matsumoto, Yoshiyuki^a | Sawada, Tatsuo^{a; *}

Affiliations: [a] Department of Mechanical Engineering, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

Correspondence: [*] Corresponding author. Tel.: +81 45 566 1504; Fax: +81 45 566 1495; E-mail: sawada@ mech.keio.ac.jp

Abstract: Experimental results for ultrasonic propagation velocity properties in water-based magnetic fluids are reported. Water-based magnetic fluid samples having 10 wt%, 30 wt% and 40 wt% concentration of magnetic particles were examined. The ultrasonic propagation velocity generally decreases with higher concentrations of magnetic particles, generally increases with increasing external magnetic field intensity and exhibits anisotropy.

Keywords: Magnetic fluid, ultrasonic propagation velocity, cluster

DOI: 10.3233/JAE-2007-820

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 25, no. 1-4, pp. 133-138, 2007