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Author:

Liu, Zenghua (Liu, Zenghua.) (Scholars:刘增华) | Hu, Yanan (Hu, Yanan.) | Fan, Junwei (Fan, Junwei.) | Yin, Wuliang (Yin, Wuliang.) | Liu, Xiucheng (Liu, Xiucheng.) | He, Cunfu (He, Cunfu.) (Scholars:何存富) | Wu, Bin (Wu, Bin.) (Scholars:吴斌)

Indexed by:

Scopus SCIE

Abstract:

Recently, a magnetostrictive patch transducer (MPT) by means of the highly magnetostrictive (such as nickel or iron-cobalt alloy) patch attached on the specimen has been applied in nondestructive ultrasonic testing in waveguides. In the study, we proposed a new MPTs array employing a multi-splitting meander coil (MSMC) for generating and receiving longitudinal guided waves in pipes. In the suggested configuration, the directions of the static magnetic field produced by the permanent magnets and the dynamic magnetic field produced by the MSMC are in the axial direction of the pipe. Two finite element models were established to simulate the distribution of the static and dynamic magnetic fields in the patch, respectively. The proposed MSMC was made of flexible printed circuit (FPC), so it could be easily installed on pipe surface. The performance of the proposed MPTs array was experimentally studied. Firstly, it was experimentally verified that the axisymmetric longitudinal guided wave mode, L(0,2), could be effectively generated and received in pipes with the developed MSMC-MPTs array. Secondly, the frequency response characteristics of the developed MSMC-MPTs array were related to D (the distance between adjacent belts of the MSMC). Thirdly, we demonstrated the ability of the developed MSMC-MPTs array for the identification and location of a crack defect in pipes. Finally, we compared the performances of the MSMC-MPTs array and conventional meander coil-MPTs and proved that the signals of the longitudinal guided wave mode could be enhanced by using the developed MSMC-MPTs array. (C) 2015 Elsevier Ltd. All rights reserved.

Keyword:

Longitudinal mode MPTs array Defect identification MSMC Pipe inspection

Author Community:

  • [ 1 ] [Liu, Zenghua]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 2 ] [Hu, Yanan]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 3 ] [Fan, Junwei]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 4 ] [Liu, Xiucheng]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 5 ] [He, Cunfu]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 6 ] [Wu, Bin]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China
  • [ 7 ] [Yin, Wuliang]Univ Manchester, Sch Elect & Elect Engn, Manchester M13 9PL, Lancs, England

Reprint Author's Address:

  • 刘增华

    [Liu, Zenghua]Beijing Univ Technol, Coll Mech Engn & Appl Elect Technol, Beijing 100124, Peoples R China

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Source :

NDT & E INTERNATIONAL

ISSN: 0963-8695

Year: 2016

Volume: 79

Page: 30-37

4 . 2 0 0

JCR@2022

ESI Discipline: MATERIALS SCIENCE;

ESI HC Threshold:305

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 50

SCOPUS Cited Count: 64

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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