基于金属化光纤光栅的温度应变同时测量  

Simultaneous Measurement of the Strain and Temperature Using the Metallized Optical Fiber Grating Sensor

作　　者：冯艳[1] 李玉龙[1] 徐敏 王伟涛[1] 

机构地区：[1]南昌大学机电工程学院,江西省机器人与焊接自动化重点实验室,南昌330031 [2]江西洪都航空工业集团660设计所,南昌330024

出　　处：《传感技术学报》2012年第11期1503-1506,共4页Chinese Journal of Sensors and Actuators

基　　金：国家自然基金项目(61067003,51265035);高等学校博士点新教师基金项目(20103601120005);江西省自然科学基金项目(2010GQC0129);江西省教育厅青年科学基金项目(GJJ11035);江西省青年科学家计划项目(2010DQ01000)

摘　　要：光纤布拉格光栅(FBG)传感器具有温度和应变交叉敏感特性,可用于温度和应变的同时测量。金属镀层可对FBG产生温度增敏的作用。针对室温化学固化型义齿基托树脂在凝固过程中同时产生收缩应变和放热现象,本文将化学镀镍FBG与裸FBG相结合,设计出一种新颖的测量结构,实现了温度和应变双参数同时测量。通过深入分析,得到室温固化型义齿基托树脂在凝固后21 min左右放热最大,其最大温度变化ΔT达到12.8℃,收缩的应变Δε为2.61με。该研究成果可为口腔修复治疗提供理论基础。The optical fiber Bragg grating sensor is sensitive to both strain and temperature, The metallized FBGs have much higher temperature sensitivity than the bare FBGs. The contraction and exothermic reaction take place during the consolidation process of the denture resin base materials. A measurement system manufactured using a bare FBG and a nickel coated FBG was designed to simultaneously measure the temperature and strain change of the room temperature-curing process of the denture base resin in this paper. The experimental data show the maximum temperature change occurred at the twenty-first minute during the room temperature-curing process of the denture base resin. The maximum temperature change（ΔT） and the strain（Δε） are 12.8 ℃ and 2.61 με ,respectively. The results of this study may be useful to the clinical treatments.

关 键 词：光纤布拉格光栅 同时测量 化学镀镍 温度增敏 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]