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Proceedings Paper

Observation of the chain transformation process in magnetorheological fluids using micro-DHPTV
Author(s): Hai Liu; Zhixiong Zhao; Lin Hu; Yunxiu Shui; Gang Zhu
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Paper Abstract

In the last years, several techniques have been developed for the measurement of the three velocity components in a fluid plane or volume.Digital holography particle tracing velocimetry(DHPTV)was applied to observe the chain transformation process of magnetorheological fluids (MR fluids) under an external magnetic field. With the help of correlation coefficient(CC)method[1], the focus plane of standard particle target was determined. The displacement of standard target mounted on a precise displacement measurement workbench was compared with the distance measured by difference of focal planes movement. Making use of a controlled rotating platform with constant revolving speed, the rotation speed of particles was obtained after extracting the coordinates from reconstruction images. The measured speed was compared with actual speed of particles,which can be worked out through rotation speed of platform. The transformation speed was measured when magnetic particle moved along with magnetic direction under an external magnetic field. The experiments showed that a visible part of 3D velocity field could be observed in the chain transformation process of MR fluids with DHPTV.

Paper Details

Date Published: 8 March 2017
PDF: 12 pages
Proc. SPIE 10255, Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016, 1025509 (8 March 2017); doi: 10.1117/12.2267968
Show Author Affiliations
Hai Liu, Chongqing Univ. of Technology (China)
Zhixiong Zhao, Chongqing Univ. of Technology (China)
Lin Hu, Chongqing Univ. of Technology (China)
Yunxiu Shui, Chongqing Univ. of Technology (China)
Gang Zhu, Key Lab. of Advanced Manufacturing Technology for Automobile Parts of Ministry of Education (China)


Published in SPIE Proceedings Vol. 10255:
Selected Papers of the Chinese Society for Optical Engineering Conferences held October and November 2016
Yueguang Lv; Jialing Le; Hesheng Chen; Jianyu Wang; Jianda Shao, Editor(s)

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