美国《工程索引》核心期刊
中国科学引文数据库核心期刊
国际刊号:ISSN 1005-1120
国内刊号:CN 32-1389/V
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  • 主管:工业和信息化部
  • 主办:南京航空航天大学
  • 国际刊号:ISSN 1005-1120
  • 国内刊号:CN 32-1389/V
  • 地址:南京市御道街29号
  • 电话:025-84892071
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Jia Jiuhong, Liao Zuoyu, Hu Xiaoyin, Tu Shandong.Magnification Ratio of Mechanical Displacement Amplifier in Sensing Device[J].南京航空航天大学学报英文版,2017,34(3):302-307
Magnification Ratio of Mechanical Displacement Amplifier in Sensing Device
  
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中文关键词:  
英文关键词:magnification ratio; bridge shaped amplifier; sensing device
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作者单位
Jia Jiuhong, Liao Zuoyu, Hu Xiaoyin, Tu Shandong Key Laboratory of Pressure Systems and Safety of Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, P.R. China 
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中文摘要:
      
英文摘要:
      In order to monitor deformation of high temperature components for a long time, a sensing device integrating a bridge shaped mechanical displacement amplifier has been designed. This sensing device has higher resolution and accuracy than conventional extensometers. However, the relation between the magnification ratio and the structure size of the displacement amplifier is a bottleneck of sensing device design. Addressing this, the magnification ratio of a mechanical displacement amplifier is analytically derived based on its geometry structure. Six prototypes of the displacement amplifier made in propathene are manufactured, and an experimental system is set up to validate the accuracy of the established magnification ratio equation. Theoretical magnification ratios and experimental magnification ratios are compared and agree well, which verifies that the proposed equation is reliable. This analytical equation provides an effective design method for bridge shaped mechanical displacement amplifiers with an expected magnification ratio.
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