光纤光栅传感器的改进与应用  

Improvement and application of integrated optical fibre

作　　者：柴葳[1] 郝庆瑞[1] 张佳斌[1] 郑瑶[1] Chai Wei;Hao Qingrui;Zhang Jiabin;Zheng Yao(Aircraft Strength Research Institute of China,Xi'an 710065.China)

机构地区：[1]中国飞机强度研究所四室,西安

出　　处：《飞行器强度研究》2023年第1期9-15,共7页Aircraft Strength Research

摘　　要：高温应变是材料和结构在高温环境中物理性能的主要参数之一,对高温应变的准确测量是结构热强度试验的重要组成部分。目前在高温应变测量方面存在安装工艺复杂耗费时间长、测量分散性大,高温胶造成应变传递误差,热输出标定带来二次误差等不足。本文将光纤温度/应变复合传感器应用到热强度试验中,该传感器结合布拉格光栅光纤传感器和非本征法珀传感器,可以同时测量同一点的温度和应变。该传感器具有不依赖高温胶传递应变,不需要标定热输出等优点。当前已实现800℃环境下温度和应变的测量。经试验结果证明传感器性能稳定,一致性良好。High temperature strain is one of the key physical parameters in material and components under elevated temperature environments.With the development of aerospace fields,the measurement of high temperature strain,during the thermal structure test,is required higher accuracy than ever before.However conventional resistance strain gauge is hard to meet the requirements due to its various defects of complicated and low efficiency configuration process.high scattering brut data.glue induced transmission error and thermal output validation test error.This work was devoted to develop a novel integrated temperature/strain sensor based on combination of optical fibre Bragg grating and extrinsic F-P cavity.which is unnecessary to compensation the thermal output and without glue related strain transmission error.At present,temperature and strain measurement at 8oo℃has been achieved.The results show that the sensor is stable and consistent.

关 键 词：光纤布拉格光栅 光纤法珀腔 温度-应变同步测量 800℃高温应变 

分 类 号：TP2[自动化与计算机技术—检测技术与自动化装置]