Ultrasonic propagation velocity in magnetic and magnetorheological fluids due to an external magnetic field

M. A. Bramantya, M. Motozawa, Tatsuo Sawada

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Ultrasonic propagation velocity in a magnetic fluid (MF) and magnetorheological fluid (MRF) changes with the application of an external magnetic field. The formation of clustering structures inside the MF and MRF clearly has an influence on the ultrasonic propagation velocity. Therefore, we propose a qualitative analysis of these structures by measuring properties of ultrasonic propagation. Since MF and MRF are opaque, non-contact inspection using the ultrasonic technique can be very useful for analyzing the inner structures of MF and MRF. In this study, we measured ultrasonic propagation velocity in a hydrocarbon-based MF and MRF precisely. Based on these results, the clustering structures of these fluids are analyzed experimentally in terms of elapsed time dependence and the effect of external magnetic field strength. The results reveal hysteresis and anisotropy in the ultrasonic propagation velocity. We also discuss differences of ultrasonic propagation velocity between MF and MRF.

Original languageEnglish
Article number324102
JournalJournal of Physics Condensed Matter
Volume22
Issue number32
DOIs
Publication statusPublished - 2010 Aug 18

Fingerprint

Ultrasonic propagation
Magnetorheological fluids
magnetorheological fluids
Magnetic fluids
propagation velocity
ultrasonics
Magnetic fields
fluids
magnetic fields
Hydrocarbons
qualitative analysis
Hysteresis
Anisotropy
time dependence
Inspection
Ultrasonics
inspection
field strength
hydrocarbons
hysteresis

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Science(all)

Cite this

Ultrasonic propagation velocity in magnetic and magnetorheological fluids due to an external magnetic field. / Bramantya, M. A.; Motozawa, M.; Sawada, Tatsuo.

In: Journal of Physics Condensed Matter, Vol. 22, No. 32, 324102, 18.08.2010.

Research output: Contribution to journalArticle

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