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

Masaakl Motozawa, Yuta Iizuka, Tatsu Sawada

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publication2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
Pages73-78
Number of pages6
EditionPART A
DOIs
Publication statusPublished - 2007 Dec 1
Event2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007 - San Diego, CA, United States
Duration: 2007 Jul 302007 Aug 2

Publication series

Name2007 Proceedings of the 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
NumberPART A
Volume2 FORA

Other

Other2007 5th Joint ASME/JSME Fluids Engineering Summer Conference, FEDSM 2007
CountryUnited States
CitySan Diego, CA
Period07/7/3007/8/2

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ASJC Scopus subject areas

  • Mechanical Engineering
  • Condensed Matter Physics

Cite this

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