Title

混凝土结构内部应变光纤检测试验研究

Translated Titles

Experimental Research on Strain Measurement in Concrete Specimens by Fiber Optical Sensors

Authors

李志刚(Zhi-Gang Li);赵启林(Qi-Lin Zhao);王景全(Jing-Quan Wang)

Key Words

光纤 ; 应变传感器 ; 混凝土 ; optical fiber ; strain sensor ; concrete

PublicationName

東南大學學報(自然科學版)

Volume or Term/Year and Month of Publication

34卷2期(2004 / 03 / 20)

Page #

257 - 259

Content Language

簡體中文

Chinese Abstract

简要介绍了一种基于光纤白光Michelson干涉仪原理的光纤应变传感器和测量混凝土内部应变的原理,并采用Michelson光纤白光应变测量干涉系统,利用新型光纤传感探头,对混凝土内部的一维应变状态进行了测量,给出了混凝土试件单轴力学实验结果并与Instron8506液压伺服材料实验机得到的结果进行了比较和分析。试验显示当荷载在极限荷载的80%以前为线性阶段,线性范围内光纤传感器与Instron8506测量结果大体符合,说明线性区间应力应变内部状态与外部是一致的。试验结果表明,这种新型光纤传感器显示了良好的传感性能,能够监测混凝土内部应变状态,发挥出成活率高、绝对值测量和寿命长等优势。

English Abstract

A fiber-optic sensor based on white light Michelson interferometer and the principle of detecting strain in concrete are introduced. One dimensional internal strains in concrete specimens were measured based on embedded novel optical fiber sensors with a white light interferometric Michelson system. The results obtained are analyzed and compared with the experimental data given by Instron8506 material testing machine. The experiment shows that when load is less than 80 percent of utmost load the relation between stress and strain keeps linear, and the results obtained through optical fiber sensor and Instron8506 are generally accordant. It indicates that the interior status of stress and strain is coherent with exterior in linear area. Experiment results show that the novel sensor has advantages in surviving capability, absolute value measurement and service life.

Topic Category 基礎與應用科學 > 基礎與應用科學綜合
生物農學 > 生物農學綜合
工程學 > 工程學綜合