作者机构：
[Fan, Jijun] Wuhan Polytech Univ, Dept Math & Phys, Wuhan 430023, Hubei, Peoples R China.;[Yu, Nanhui] Wuhan Polytech Univ, Coll Mech Engn, Wuhan 430023, Hubei, Peoples R China.
通讯机构：
[Fan, Jijun] W;Wuhan Polytech Univ, Dept Math & Phys, Wuhan 430023, Hubei, Peoples R China.
会议名称：
International Conference on Civil Engineering and Building Materials (CEBM)
会议时间：
JUL 29-31, 2011
会议地点：
Kunming, PEOPLES R CHINA
会议主办单位：
[Fan, Jijun] Wuhan Polytech Univ, Dept Math & Phys, Wuhan 430023, Hubei, Peoples R China.^[Yu, Nanhui] Wuhan Polytech Univ, Coll Mech Engn, Wuhan 430023, Hubei, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
ER fluids;Velocity Measurement;Laser Speckle;Dielectric Particles
摘要：
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 the direction of electric field and that perpendicular to the direction of electric field were obtained by processing the two consecutive speckle patterns. The experimental results showed that the velocities of particles decreased oscillatorily with time. There is a critical electric field and a critical sample concentration, when lower than this critical electric field (concentration), the mean particle velocity increased; otherwise, it decreased.
会议论文集名称：
The 17th IAPRI World Conference on Packaging(第17届世界包装大会)论文集
关键词：
filling production line;conveying bottle system;stability;conveyor
摘要：
The conveying bottle system meets a larger risk in high speed filling production line, and bottle falling, breaking and blocking in the high speed conveying process severely lower the production capacity and reliability of the conveying system. The effect of the bottle structure and conveying velocity on the bottle stability was analyzed. The container storage and conveying technology, conveying technology of merging into single line, and low push pressure technology of container were introduced so as to obtain high efficiency.
