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 language | English |
|---|---|
| Pages (from-to) | 1330-1333 |
| Number of pages | 4 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 323 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2011 May |
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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 journal › Article
}
TY - JOUR
T1 - The influence of magnetic field swept rate on the ultrasonic propagation velocity of magnetorheological fluids
AU - Bramantya, M. A.
AU - Sawada, Tatsuo
PY - 2011/5
Y1 - 2011/5
N2 - 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.
AB - 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.
KW - Cluster formation
KW - Magnetorheological fluid
KW - Swept rate
KW - Ultrasonic
UR - http://www.scopus.com/inward/record.url?scp=79952193168&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=79952193168&partnerID=8YFLogxK
U2 - 10.1016/j.jmmm.2010.11.040
DO - 10.1016/j.jmmm.2010.11.040
M3 - Article
VL - 323
SP - 1330
EP - 1333
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
SN - 0304-8853
IS - 10
ER -