Detection and characterization of corrosion of bridge cables by time domain reflectometry

被引：11

作者：

Liu, W ^{[1
]}

Hunsperger, R ^{[1
]}

Folliard, K ^{[1
]}

Chajes, M ^{[1
]}

Barot, J ^{[1
]}

Jhaveri, D ^{[1
]}

Kunz, E ^{[1
]}

机构：

[1] Univ Delaware, Dept Elect & Comp Engn, Newark, DE 19716 USA

来源：

NONDESTRUCTIVE EVALUATION OF BRIDGES AND HIGHWAYS III | 1999年 / 3587卷

关键词：

corrosion detection; nondestructive evaluation; TDR;

D O I：

10.1117/12.339928

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this paper, we develop and demonstrate a nondestructive evaluation technique for corrosion detection of embedded or encased steel cables. This technique utilizes time domain reflectometry (TDR), which has been traditionally used to detect electrical discontinuities in transmission lines. By applying a sensor wire along with the bridge sable, we can model the cable as an asymmetric, twin-conductor transmission line. Physical defects of the bridge cable will change the electromagnetic properties of the line and can be detected by TDR. Furthermore, different types of defects can be modeled analytically, and identified using TDR. TDR measurement results from several fabricated bridge cable sections with built-in defects are reported.

引用

页码：28 / 39

页数：12