Application study of embedded Rayleigh based Distributed Optical Fiber Sensors in concrete beams

被引：19

作者：

Barrias, Antonio ^{[1
]}

Casas, Joan R. ^{[1
]}

Villalba, Sergi ^{[2
]}

机构：

[1] Tech Univ Catalonia, UPC BarcelonaTech, Dept Civil & Environm Engn, C Jordi Girona1-3, Barcelona 08034, Spain

[2] Tech Univ Catalonia, UPC BarcelonaTech, Dept Engn & Construct Projects, C Colom 11,Ed TR5, Terrassa 08022, Barcelona, Spain

来源：

X INTERNATIONAL CONFERENCE ON STRUCTURAL DYNAMICS (EURODYN 2017) | 2017年 / 199卷

关键词：

fiber optics; structural health monitoring; distributed fiber sensing; Rayleigh scattering; OFDR;

D O I：

10.1016/j.proeng.2017.09.466

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this work, an experiment on two small concrete beams is described where Rayleigh based distributed optical fiber sensors (DOFS) are implemented together with traditional electrical strain gauges for the monitoring of these elements during a three-point load test. Part of the DOF sensor is embedded without protective coating directly in the rebar inside the concrete, being the remaining fiber glued to the surface of the element after the concrete hardening. This allows the direct comparison between the developed strains on the surface of concrete and the rebar with the use of a single sensor. Moreover, two types of adhesives are studied and then compared. From all the possible distributed sensing techniques, the Rayleigh based Optical Frequency Domain Reflectometer (OFDR) is the one which enables the better spatial resolution without the need of post-processing algorithms. In this way, in this experiment, this is going to be the used sensing technique. (C) 2017 The Authors. Published by Elsevier Ltd.

引用

页码：2014 / 2019

页数：6

共 5 条

[1] A Review of Distributed Optical Fiber Sensors for Civil Engineering Applications [J].