The influence of magnetic field swept rate on the ultrasonic propagation velocity of magnetorheological fluids

M. A. Bramantya, Tatsuo Sawada

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Structure of magnetorheological (MR) fluids depends on the strength of the magnetic field applied and on the mode of its application. The ultrasonic wave propagation velocity changes under the effect of an external magnetic field as a result of formation of clusters arranged along the direction of the field in the MR fluids. Therefore, we propose a qualitative analysis of these clustering structures by measuring properties of ultrasonic propagation. Since the MR fluids are opaque, the non-contact inspection using this ultrasonic technique can be very useful. In this study, we measured ultrasonic propagation velocity in MR fluid influenced by an external magnetic field for different swept rate precisely. With increasing magnetic field intensity, the changes of the ultrasonic wave velocity are more pronounced. Sedimentation effect takes place in certain time for different swept rate due to magnetic particle size and it follows linear relationship in log scale. Significant differences of the ultrasonic wave velocity are established between the case when the field is swept at a constant rate and the case when it is stepped up.

Original languageEnglish
Pages (from-to)1330-1333
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume323
Issue number10
DOIs
Publication statusPublished - 2011 May

Fingerprint

Ultrasonic propagation
Magnetorheological fluids
magnetorheological fluids
propagation velocity
ultrasonic radiation
ultrasonics
Magnetic fields
Ultrasonic velocity
magnetic fields
qualitative analysis
Sedimentation
magnetic flux
inspection
wave propagation
Inspection
Ultrasonics
Particle size
propagation

Keywords

  • Cluster formation
  • Magnetorheological fluid
  • Swept rate
  • Ultrasonic

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

The influence of magnetic field swept rate on the ultrasonic propagation velocity of magnetorheological fluids. / Bramantya, M. A.; Sawada, Tatsuo.

In: Journal of Magnetism and Magnetic Materials, Vol. 323, No. 10, 05.2011, p. 1330-1333.

Research output: Contribution to journalArticle

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