Investigation of inner structure in magnetic and MR fluids by ultrasonic propagation velocity

Masaakl Motozawa; Yuta Iizuka; Tatsu Sawada

doi:10.1115/FEDSM2007-37477

Investigation of inner structure in magnetic and MR fluids by ultrasonic propagation velocity

Masaakl Motozawa, Yuta Iizuka, Tatsu Sawada

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

When the magnetic field is applied to magnetic or MR fluids, some of inner particles form clustering structure. These clustering structures influence on the ultrasonic propagation velocity in these fluids. We measured precisely the properties of ultrasonic propagation velocity in these fluids subjected to the magnetic field. The measurement scheme is based on the pulse method. The external magnetic field intensity is varied from 0 mT to 550 mT and the angle between the magnetic field direction and the direction of ultrasonic wave propagation is varied from 0° to 90°. Some interesting properties of ultrasonic propagation such as hysteresis and anisotropy are observed. Based on the experimental results, the inner structures of the magnetic or the MR fluids are analyzed experimentally and the application of non-contact inspection in these fluids by ultrasonic techniques is discussed.

Original language	English
Title of host publication	2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Pages	73-78
Number of pages	6
Edition	PART A
DOIs	https://doi.org/10.1115/FEDSM2007-37477
Publication status	Published - 2007 Dec 1
Event	2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 - San Diego, CA, United States Duration: 2007 Jul 30 → 2007 Aug 2

Publication series

Name	2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Number	PART A
Volume	2 FORA

Other

Other	2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Country/Territory	United States
City	San Diego, CA
Period	07/7/30 → 07/8/2

ASJC Scopus subject areas

Mechanical Engineering
Condensed Matter Physics

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10.1115/FEDSM2007-37477

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Motozawa, M., Iizuka, Y., & Sawada, T. (2007). Investigation of inner structure in magnetic and MR fluids by ultrasonic propagation velocity. In 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 (PART A ed., pp. 73-78). (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; Vol. 2 FORA, No. PART A). https://doi.org/10.1115/FEDSM2007-37477

Investigation of inner structure in magnetic and MR fluids by ultrasonic propagation velocity. / Motozawa, Masaakl; Iizuka, Yuta; Sawada, Tatsu.
2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A. ed. 2007. p. 73-78 (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; Vol. 2 FORA, No. PART A).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Motozawa, M, Iizuka, Y & Sawada, T 2007, Investigation of inner structure in magnetic and MR fluids by ultrasonic propagation velocity. in 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A edn, 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007, no. PART A, vol. 2 FORA, pp. 73-78, 2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007, San Diego, CA, United States, 07/7/30. https://doi.org/10.1115/FEDSM2007-37477

Motozawa M, Iizuka Y, Sawada T. Investigation of inner structure in magnetic and MR fluids by ultrasonic propagation velocity. In 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A ed. 2007. p. 73-78. (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; PART A). doi: 10.1115/FEDSM2007-37477

Motozawa, Masaakl ; Iizuka, Yuta ; Sawada, Tatsu. / Investigation of inner structure in magnetic and MR fluids by ultrasonic propagation velocity. 2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007. PART A. ed. 2007. pp. 73-78 (2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007; PART A).

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abstract = "When the magnetic field is applied to magnetic or MR fluids, some of inner particles form clustering structure. These clustering structures influence on the ultrasonic propagation velocity in these fluids. We measured precisely the properties of ultrasonic propagation velocity in these fluids subjected to the magnetic field. The measurement scheme is based on the pulse method. The external magnetic field intensity is varied from 0 mT to 550 mT and the angle between the magnetic field direction and the direction of ultrasonic wave propagation is varied from 0° to 90°. Some interesting properties of ultrasonic propagation such as hysteresis and anisotropy are observed. Based on the experimental results, the inner structures of the magnetic or the MR fluids are analyzed experimentally and the application of non-contact inspection in these fluids by ultrasonic techniques is discussed.",

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Investigation of inner structure in magnetic and MR fluids by ultrasonic propagation velocity

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