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Proceedings Paper

Micro-phenomenon and viscosity features of magnetorheological fluids at external field
Author(s): Haobo Cheng; Guozheng Sun; Zhijing Feng; Yongtian Wang
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Paper Abstract

Magnetorheological finishing (MRF) is a technique in which a magnetic-field stiffened ribbon of MR fluid is used to polish a workpiece. MR fluids are essentially suspensions of magnetizable particles immersed in a nonmagnetic fluid. These complex fluids show a unique ability to undergo rapid, nearly completely reversible, significant changes in their mechanical and optical properties upon application of an external magnetic field. The aim of this work is essentially to investigate the effect of microstructure and viscosity behavior of magnetorheological suspensions under the external electro-magnetic field. A viscometer equipped with a circular shape electro-magnetic coil around the testing tube is used. The viscosity of the MR fluids is experimentally studied with the change of the magnetic density. The microstructure and behavior of bending chains in MR fluids are observed by applying an electro-magnetic field.

Paper Details

Date Published: 9 June 2006
PDF: 6 pages
Proc. SPIE 6149, 2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 61490K (9 June 2006); doi: 10.1117/12.674207
Show Author Affiliations
Haobo Cheng, Beijing Institute of Technology (China)
Tsinghua Univ. (China)
Guozheng Sun, China North Industries Group Corp. (China)
Zhijing Feng, Tsinghua Univ. (China)
Yongtian Wang, Beijing Institute of Technology (China)


Published in SPIE Proceedings Vol. 6149:
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Shangming Wen; Yaolong Chen; Ernst-Bernhard Kley, Editor(s)

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