高温薄膜应变计应变传递过程的仿真研究  

Simulation Study on the Strain Transfer Process of High Temperature Thin Film Strain Gauges

作　　者：陈长源 周世威 周枳仲 蒋书文[1] Chen Changyuan;Zhou Shiwei;Zhou Zhizhong;Jiang Shuwen(State Key Laboratory of Electronic Thin Films and Integrated Devices,University of Electronic Science and Technology of China,Chengdu 611731,China)

机构地区：[1]电子科技大学电子薄膜与集成器件全国重点实验室,四川成都611731

出　　处：《航空科学技术》2024年第11期76-83,共8页Aeronautical Science & Technology

基　　金：航空科学基金(20200046080001)。

摘　　要：薄膜应变计是一种用于高温应变测量的新型电阻式应变计,是航空发动机涡轮叶片等部件应力/应变参数测量、健康监测的先进技术。本文对航空发动机应变测量用高温薄膜应变计的应变传递过程进行了仿真研究,并与粘贴式应变计、喷涂式应变计的应变损失率进行了对比。结果表明,薄膜应变计由于其总厚度小、弹性模量水平高,在应变传递过程中应变损失率最低,应变测量准确性最高。同时,薄膜应变计的应变损失率随各膜层厚度的增加而增加。The thin film strain gauge is a novel resistive strain gauge used for high-temperature strain measurements,it is an advanced technology for measuring stress/strain parameters and health monitoring of aeroengine turbine blades.In this paper,the strain transfer process of high temperature thin film strain gauges used in aeroengine were simulated and compared with the strain loss rate of adhesive strain gauges and spray strain gauges.The results show that,due to their small total thickness and high elastic modulus level,the thin film strain gauges exhibit the lowest strain loss rate and the highest accuracy in strain measurement.Meanwhile,the strain loss rate of the thin film strain gauges increases with the thickness of each film layer.

关 键 词：薄膜应变计 应变传递 应变测量 仿真 剪滞理论 

分 类 号：V19[航空宇航科学与技术—人机与环境工程]