Wuhan Polytech Univ, Dept Math & Phys, Wuhan 430023, Peoples R China.
语种：
英文
关键词：
ER fluids;velocity measurement;laser speckle;dielectric particles
期刊：
Journal of Physics: Conference Series
ISSN：
1742-6588
年：
2011
卷：
276
期：
1
页码：
012119
会议名称：
3rd International Photonics and OptoElectronics Meetings, POEM 2010
会议时间：
November 2, 2010 - November 5, 2010
会议地点：
Wuhan, China
会议主办单位：
(1) Department of Mathematics and Physics, Wuhan Polytechnic University, Wuhan 430023, China; (2) College of Mechanical Engineering, Wuhan Polytechnic University, Wuhan 430023, China
会议赞助商：
Huazhong University of Science and Technology (HUST);China Hubei Provincial Science Technology Department (HBSTD);Wuhan East Lake National Innovation Model Park
出版者：
Institute of Physics Publishing, Temple Back, Bristol, BS1 6BE, United Kingdom
natural science foundation of Hubei ProvinceNatural Science Foundation of Hubei Province [2007ABA086]
机构署名：
本校为第一且通讯机构
院系归属：
机械工程学院
数学与计算机学院
摘要：
Usually, it is regarded that the movement of dielectric particles in ER fluids is related to the generation of electrorheological effect. In this paper, the principle of measuring infinitesimal displacement by laser speckle is proposed to measure the velocities of particles in ER fluids. It is verified that speckles can be formed by illuminating laser beam on the starch ER fluids. The speckle patterns was recorded with high speed CCD camera, and the speckle patterns sequences with short time intervals was obtained by intercepting laser speckle video. Displacements parallel to electric field an...
