• 其他栏目

    陆永华

    • 教授 博士生导师
    • 招生学科专业:
      机械工程 -- 【招收博士、硕士研究生】 -- 机电学院
      航空宇航科学与技术 -- 【招收硕士研究生】 -- 机电学院
      机械 -- 【招收博士、硕士研究生】 -- 机电学院
    • 主要任职:全系发展、学科建设、系管理工作
    • 毕业院校:南京航空航天大学
    • 学历:南京航空航天大学
    • 学位:工学博士学位
    • 所在单位:机电学院
    • 办公地点:17-525
    • 联系方式:nuaa_lyh@nuaa.edu.cn
    • 电子邮箱:

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    Research on the method of measuring solution concentration based on the magneto-optical effect in permanent magnetic fields

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    所属单位:机电学院

    发表刊物:Trans Inst Meas Control

    摘要:In the magnetic fields built by neodymium–iron–boron (NdFeB) permanent magnets, the corresponding relationship among the concentration of sodium chloride solution, glucose solution and their magnetic rotation angles was researched in the temperature range 20–24°C. A helium–neon (He–Ne) laser with a wavelength of 632.8 nm was used in the experiment as light source. A new device is designed for assembling and adjusting the NdFeB permanent magnets. The permanent magnets have no thermal effect compared to an energized solenoid. The corresponding relationship between the concentration and rotation angle is calibrated by standard concentration gradient solutions. Then the concentration can be detected by using this relationship. The rotation angle of the solution is proportional to the concentration and increased with an increase of the magnetic induction intensity. In the magnetic cavity with Φ12 mm dimension, the rotation angles of sodium chloride solutions in the range 0–30 g/100 ml vary from 2.66° to 3.73° and their relative errors range from −1.39% to 1.34%. The rotation angles of glucose solutions in the range 0–50 g/100 ml vary from 2.66° to 26. 44° and their relative errors range from −0.55% to 1.00%. The uncertainty of this system is 0. 05°. © The Author(s) 2018.

    ISSN号:0142-3312

    是否译文:

    发表时间:2018-11-01

    合写作者:Gong, Xin-Yu,Lin, Le-Gang,Diao, Yong

    通讯作者:陆永华