Measurement of crack formation in concrete using embedded optical fibre sensors and differential strain analysis

被引：18

作者：

Childs, Paul ^{[1
,2
]}

Wong, Allan C. L. ^{[1
]}

Terry, W. ^{[3
]}

Peng, G. D. ^{[1
]}

机构：

[1] Univ New S Wales, Sch Elect Engn, Sydney, NSW 2052, Australia

[2] Tsinghua Univ, Dept Elect Engn, Beijing 100084, Peoples R China

[3] Univ New S Wales, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia

来源：

MEASUREMENT SCIENCE AND TECHNOLOGY | 2008年 / 19卷 / 06期

关键词：

optical fibre sensors; fibre Bragg gratings; internal crack formation;

D O I：

10.1088/0957-0233/19/6/065301

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Fibre Bragg grating sensors are embedded into concrete cylinders to monitor cracking deep within the specimens. Loading cycles and loading till failure tests are performed, with measurements from the sensors collected up to, and during, failure. Calibration of the off-axis angle of the optical fibre sensors is performed and the spread of this angle noted. The use of the bandwidth of the gratings to indirectly measure the differential strain across the grating, and thus the amount of internal cracking within the specimens, is proposed and tested. The results accord well with the theoretically predicted behaviour of bulk concrete.

引用

页数：9

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