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A Giant-Magnetoresistance Sensor for Magnetic-Flux-Leakage Nondestructive Testing of a Pipeline

  • Magnetic and Electromagnetic Methods
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Russian Journal of Nondestructive Testing Aims and scope Submit manuscript

Abstract

This paper presents the method of magnetic-flux-leakage (MFL) detection and the characteristics of a giant-magnetoresistance (GMR) sensor. An experimental apparatus that uses a GMR sensor for oil-pipeline inspection is described. A permanent-magnet assembly was used to excite MFL signals. The signal from the GMR sensor is preamplified with an appropriate gain. The result shows the magnetic-flux-leakage method based on a GMR sensor can detect small defects in an oil pipeline.

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Authors and Affiliations

  1. Department of Information Measurement Technology and Instruments, Shanghai Jiaotong University, Shanghai, 200030, China

    L. Chen, P.-W. Que & T. Jin

Authors
  1. L. Chen
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  2. P.-W. Que
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  3. T. Jin
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Additional information

__________

From Defektoskopiya, Vol. 41, No. 7, 2005, pp. 69–73.

Original English Text Copyright © 2005 by Chen, Que, Jin.

The text was submitted by the authors in English.

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Chen, L., Que, PW. & Jin, T. A Giant-Magnetoresistance Sensor for Magnetic-Flux-Leakage Nondestructive Testing of a Pipeline. Russ J Nondestruct Test 41, 462–465 (2005). https://doi.org/10.1007/s11181-005-0193-7

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  • DOI: https://doi.org/10.1007/s11181-005-0193-7

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