Experimental Studies and New Feature Extractions of MBN for Stress Measurement on Rail Tracks

Author

Ping Wang ; Yunlai Gao ; Yarong Yang ; Guiyun Tian ; Entao Yao ; Haitao Wang

Author_Institution

Coll. of Autom. Eng., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China

Volume

49

Issue

8

fYear

2013

fDate

Aug. 2013

Firstpage

4858

Lastpage

4864

Abstract

The paper reports the design and implementation of magnetic Barkhausen noise (MBN) systems as well as its application and experiments for stress measurement on the rail track. Features of MBN signals including root mean square, average amplitude and pulse counts are calculated and analyzed, and a new feature the ratio of peak value and width at half maximum is introduced. All of these features of MBN signal decreases with the increase of compressive stress, but the feature of the ratio of peak value and width at half maximum has the fastest rate of decreasing against compressing stress which means that it has better sensitivity in stress measurement.

Keywords

Barkhausen effect; compressive strength; feature extraction; inspection; magnetic noise; rails; railways; signal processing; stress measurement; MBN systems; compressive stress; magnetic Barkhausen noise systems; pulse counts; rail tracks; root mean square amplitude; stress measurement; Coils; Compressive stress; Magnetic domains; Magnetomechanical effects; Rails; Stress measurement; Magnetic Barkhausen noise (MBN); peak value ratio width at half maximum (PRW); railway; stress measurement;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2243159

Filename

6422394