磁流变液中软磁性颗粒尺寸及分布的数字全息测量  

Size and Distribution Measurement of Soft Magnetic Particles in Magnetorheological Fluid by Digital Holography

作　　者：朱岗[1] 杨岩[1] 

机构地区：[1]重庆理工大学机械工程学院,重庆400054

出　　处：《重庆理工大学学报（自然科学）》2014年第6期42-47,67,共7页Journal of Chongqing University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(11272368);重庆市教委科学技术研究项目(KJ120831)

摘　　要：针对目前磁流变液工作机理尚不完全清楚的现状,提出利用数字全息技术对磁流变液中软磁性颗粒进行三维可视化显示和测量。通过同轴数字全息记录光路,在无磁场和有磁场两种状态下,利用CCD传感器获得了软磁性颗粒的同轴全息图。结合相关系数法,通过数字重建得到了磁流变液中各软磁性颗粒的大小及分布,实现了软磁性粒子的三维可视化显示与测量,为进一步研究磁场作用下磁流变液的动态特性奠定了基础。In order to make the working mechanism of magnetorheological fluid clear entirely, a new method was proposed, which used digital holographic technology to realize soft magnetic particles in magnetorheological fluid measurement and three-dimensional visualization. By in-line digital holo- graphic optics system, the holograms of soft magnetic particles with magnetic field or not were recor- ded by CCD. The information of size and distribution of soft magnetic particles was obtained by using holographic reconstruction algorithm and correlation coefficient method, then soft magnetic particles measurement and three-dimensional visualization were realized. Our research has laid the foundation for the further study of the dynamic characteristics of magnetorheological fluid with the magnetic field.

关 键 词：磁流变液 同轴数字全息 相关系数法 粒子场测量 

分 类 号：TB381[一般工业技术—材料科学与工程]