Techno Press
Techno Press

Smart Structures and Systems
  Volume 2, Number 2, April 2006 , pages 155-169
DOI: https://doi.org/10.12989/sss.2006.2.2.155
 


Application of magnetoelastic stress sensors in large steel cables
Guodun Wang, Ming L. Wang, Yang Zhao, Yong Chen and Bingnan Sun

 
Abstract
    In this paper, the application of magnetoelasticity in static tension monitoring for large steel cables is discussed. Magnetoelastic (EM) stress sensors make contact-free tension monitoring possible for hanger cables and post-tensioned cables on suspension and cable-stayed bridges. By quantifying the correlation of magnetic relative permeability with tension and temperature, the EM sensors inspect the load levels in the steel cables. Cable tension monitoring on Qiangjiang (QJ) 4th Bridge demonstrates the reliability of the EM sensors.
 
Key Words
    magnetoelasticity; relative permeability; tension; temperature.
 
Address
Guodun Wang, Ming L. Wang, and Yang Zhao; Department of Civil and Materials Engineering, the University of Illinois at Chicago,Chicago, IL60607, USA
Yong Chen and Bingnan Sun; Department of Civil Engineering, Zhejiang University, Hangzhou, China
 

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