文献类型：会议论文

英文题名：Displacement Amplifier Design for an Extensometer in High Temperature Deformation Monitoring

作者：Hu, X. Y.[1];Jia, J. H.[1];Tu, S. T.[1]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, MOE Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China

会议论文集：International Workshop on Information and Electronics Engineering (IWIEE) / International Conference on Information, Computing and Telecommunications (ICICT)

会议日期：MAR 10-11, 2012

会议地点：Harbin, PEOPLES R CHINA

语种：英文

外文关键词：high temperature; strain monitoring; displacement amplifier; extensometer

摘要：In this paper a displacement amplifier is designed for integrating an amplifier into an extensometer to improve precision and resolution of the extensometer for strain monitoring of high temperature components. Firstly the displacement amplifier is investigated and the requirements for displacement amplifiers applied for high temperature deformation monitoring is summarized. Secondly a lever-type mechanical displacement amplifier for the extensometer is designed and the amplification ratio is derived. At last, feasibility of the designed displacement amplifier is analyzed from loading force, amplification ratio and environmental temperature under harsh environment for online strain monitoring using FEA. Analyzed results show that the loading force coming from the torque moment of the flexure hinge can be forced by the extensometer rods, amplification ratio equation is proved correct, and the thermal effect on accuracy can be corrected in data processing. (C) 2011 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of Harbin University of Science and Technology