工程科学学报2017，Vol.39Issue(1)：88-95,8.DOI:10.13374/j.issn2095-9389.2017.01.012
高温应变栅丝蠕变对应变测量精度影响与补偿
Influence of high temperature strain grid wire creep on strain measurement precision and its compensation
摘要
Abstract
Contact strain measurement is a tool for studying the high temperature mechanical behavior of components and materials.The measurement precision is the key point of the high temperature strain measurement field,where creep is the main factor that affects the measurement precision at high temperature.In this paper,the creep characteristics of strain gauges were analyzed according to the material mechanism of creep by a high temperature strain measurement system.A grating creep model was obtained from the creep rule and experiment measurement results.Based on the grating creep model,the influence factors of strain gauge creep output were studied by the finite element model.Finally,a compensation model of high temperature strain creep was established to improve this high temperature strain measurement precision,and it was validated by experimental data.关键词
高温/蠕变/应变片/应变测量/精度Key words
high temperature/creep/strain gauges/strain measurement/precision分类
机械制造引用本文复制引用
王文瑞,王刚,胡挺,张佳明..高温应变栅丝蠕变对应变测量精度影响与补偿[J].工程科学学报,2017,39(1):88-95,8.基金项目
国家重大科学仪器设备开发专项资助项目(2011YQ14014507) （2011YQ14014507）
航空科学重点实验室基金资助项目(20145674004) （20145674004）
中央高校基本科研业务费资助项目(FRF-TP-15-023A3) （FRF-TP-15-023A3）
