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CLC number: U216.42+4

On-line Access: 2011-12-01

Received: 2011-09-23

Revision Accepted: 2011-09-23

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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.12 P.895-901


Smart elasto-magneto-electric (EME) sensors for stress monitoring of steel structures in railway infrastructures

Author(s):  Yuan-feng Duan, Ru Zhang, Yang Zhao, Siu-wing Or, Ke-qing Fan, Zhi-feng Tang

Affiliation(s):  College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, China, Department of Electrical Engineering, The Hong Kong Polytechnic University, Hong Kong, China, School of Information Engineering, Wuyi University, Jiangmen 529020, China

Corresponding email(s):   ceyfduan@zju.edu.cn, ceyzhao@zju.edu.cn

Key Words:  Stress monitoring, High-speed railway, Steel rail, Elasto-magnetic (EM) sensor, Magneto-electric (ME), Elasto-magneto-electric (EME) sensor

Yuan-feng Duan, Ru Zhang, Yang Zhao, Siu-wing Or, Ke-qing Fan, Zhi-feng Tang. Smart elasto-magneto-electric (EME) sensors for stress monitoring of steel structures in railway infrastructures[J]. Journal of Zhejiang University Science A, 2011, 12(12): 895-901.

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author="Yuan-feng Duan, Ru Zhang, Yang Zhao, Siu-wing Or, Ke-qing Fan, Zhi-feng Tang",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Smart elasto-magneto-electric (EME) sensors for stress monitoring of steel structures in railway infrastructures
%A Yuan-feng Duan
%A Ru Zhang
%A Yang Zhao
%A Siu-wing Or
%A Ke-qing Fan
%A Zhi-feng Tang
%J Journal of Zhejiang University SCIENCE A
%V 12
%N 12
%P 895-901
%@ 1673-565X
%D 2011
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A11GT007

T1 - Smart elasto-magneto-electric (EME) sensors for stress monitoring of steel structures in railway infrastructures
A1 - Yuan-feng Duan
A1 - Ru Zhang
A1 - Yang Zhao
A1 - Siu-wing Or
A1 - Ke-qing Fan
A1 - Zhi-feng Tang
J0 - Journal of Zhejiang University Science A
VL - 12
IS - 12
SP - 895
EP - 901
%@ 1673-565X
Y1 - 2011
PB - Zhejiang University Press & Springer
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DOI - 10.1631/jzus.A11GT007

Steel structures are widely used in railway infrastructures. Their stress state is the most important determinant of the safety of these structures. The elasto-magnetic (EM) sensor is the most promising for stress monitoring of in-service steel structures. Nevertheless, the necessity of magnetic excitation to saturation due to the use of a secondary coil for signal detection, keeps from its engineering application. In this paper, a smart elasto-magneto-electric (EME) sensor using magneto-electric (ME) sensing units to take the place of the secondary coil has been exploited for the first time. The ME sensing unit is made of ME laminated composites, which has an ultrahigh ME voltage coefficient and can measure the magnetic induction simply and precisely. Theoretical analysis and characterization experiments firstly conducted on the ME laminated composites showed that the ME sensing units can be applied in the EM sensor for improved performance in stress monitoring. A tension test of a steel bar was carried out to characterize our smart EME sensor and the results showed high accuracy and sensitivity. The present smart EME sensor is a promising tool for stress monitoring of steel structures in railway and other civil infrastructures.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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