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题名: 基于PSD的静电悬浮液滴振荡技术在表面张力与黏度测量中的应用
其他题名: Application of Electrostatic Levitation Droplet Oscillation Technique in Surface Tension and Viscosity Measurement Based on PSD
作者: 王飞龙; 孙一宁; 孙志斌; 于强; 翟光杰
作者部门: 空间技术部
关键词: 静电悬浮 ; 位置敏感探测器 ; 振荡模态 ; 液滴振荡测量 ; 表面张力 ; 黏度系数
刊名: 仪表技术与传感器
ISSN号: 1002-1841
出版日期: 2016
期号: 12, 页码:173-175
收录类别: CSCD
项目资助者: 中国科学院重大科研装备研制项目 ; 中国科学院空间科学战略性先导科技专项
中文摘要: 位置敏感探测器PSD(position sensitive detector)具有成本低、响应速度快、探测灵敏度高的特点,文中结合一维PSD和静电悬浮技术,提出一种新的悬浮液滴振荡测量的方法,可以高精度地测量高温熔融材料的表面张力和黏度系数。稳定悬浮的样品通过半导体激光器加热到熔融状态后,在位置控制信号上叠加一段频率和幅值可调的正弦振荡信号,利用一维PSD采集稳态振荡后的衰减信号,通过频谱分析和指数函数拟合得到样品的共振频率和衰减时间。利用纯金属锆进行熔融液滴振荡测量的实验,计算得到液态金属锆的表面张力和黏度系数,验证了该测量方法的有效性。
英文摘要: PSD (position sensitive detector) had the advantages of low cost,fast response and high sensitivity.By combing one-dimensional PSD with electrostatic levitation,an advanced levitated droplet oscillation method was proposed to measure the surface tension and viscosity of high-temperature molten materials with high precision.After the levitating sample was heated by semiconductor lasers and melt,the output position controlling signal was added by a period of sinusoidal oscillatory signal which frequency and amplitude were adjusted.The decay signal after stable oscillation was captured by one-dimensional PSD and analyzed by spectrum transform to get the resonant frequency and fitted by exponential function to get decay time.A pure Zr sample was experimented to measure molten droplet oscillation.By calculating the surface tension and viscosity of molten Zr droplet,the measuring method is verified.
语种: 中文
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内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/5742
Appears in Collections:空间技术部_期刊论文

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