航空科学技术2024，Vol.35Issue(11)：76-83,8.DOI:10.19452/j.issn1007-5453.2024.11.010
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
摘要
Abstract
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Key words
thin film strain gauge/strain transfer/strain measurement/simulation/shear-lag theory分类
航空航天引用本文复制引用
陈长源,周世威,周枳仲,蒋书文..高温薄膜应变计应变传递过程的仿真研究[J].航空科学技术,2024,35(11):76-83,8.基金项目
航空科学基金(20200046080001) Aeronautical Science Foundation of China(20200046080001) （20200046080001）
