The Effects of Lift-Off from Wall Thinning Signal in Pulsed Eddy Current Testing

被引：12
|
作者：
Park, Duck-Gun [1 ]
Angani, C. S. [2 ]
Kishore, M. B. [1 ,3 ]
Kim, C. G. [3 ]
Lee, D. H. [1 ]
机构：
[1] Korea Atom Energy Res Inst, Nucl Mat Res Div, Taejon 305600, South Korea
[2] Indira Gandhi Ctr Atom Res, Kalpakkam 603102, Tamil Nadu, India
[3] Chungnam Natl Univ, Dept Mat Sci & Engn, Taejon 305764, South Korea
来源：
JOURNAL OF MAGNETICS | 2012年 / 17卷 / 04期
关键词：
NDT; pulsed eddy current; lift-off effect; wall thinning; pipeline;
D O I：
10.4283/JMAG.2012.17.4.298
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to know the effect of surface irregularity in the detection of local wall thinning of pipeline using pulsed eddy current (PEC), the lift-off effects on PEC signal have been investigated. Three kinds of parameters in the PEC signal, which is "peak amplitude", "time to peak amplitude" and "time to zero crossing" are analyzed to separate the lift-off effects in the PEC signal. The distance from sensor to the bottom of sample which is the total thickness of combined insulator and sample is kept constant. The magnitude of the differential peak amplitude is increased with increasing sample thickness, the time to peak amplitude is increased with increasing the sample thickness. To determine the effect of lift-off, a number of balanced transient responses combining wall thinning locations and lift-off distances were plotted.
引用
收藏
页码：298 / 301
页数：4
相关论文
共 50 条
  • [1] Pulsed eddy current measurement of lift-off
    Lefebvre, JHV
    Mandache, C
    REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 25A AND 25B, 2006, 820 : 669 - 676
  • [2] Reduction of lift-off effects for pulsed eddy current NDT
    Tian, GY
    Sophian, A
    NDT & E INTERNATIONAL, 2005, 38 (04) : 319 - 324
  • [3] Reduction of Lift-Off Effects in Pulsed Eddy Current for Defect Classification
    He, Yunze
    Pan, Mengchun
    Luo, Feilu
    Tian, Guiyun
    IEEE TRANSACTIONS ON MAGNETICS, 2011, 47 (12) : 4753 - 4760
  • [4] Measurement of lift-off using the relative variation of magnetic flux in pulsed eddy current testing
    Li, Jian
    Wu, Xinjun
    Zhang, Qing
    Sun, Pengfei
    NDT & E INTERNATIONAL, 2015, 75 : 57 - 64
  • [5] Pulsed eddy current:: Finding corrosion independently of transducer lift-off
    Giguère, S
    Dubois, SJM
    REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 19A AND 19B, 2000, 509 : 449 - 456
  • [6] Study of Lift-Off Invariance for Pulsed Eddy-Current Signals
    Tian, Gui Yun
    Li, Yong
    Mandache, Catalin
    IEEE TRANSACTIONS ON MAGNETICS, 2009, 45 (01) : 184 - 191
  • [7] Lift-off suppression based on combination of bridge and transformer signal conditionings of eddy current testing
    Ma, Qiuping
    Tian, Gui Yun
    Gao, Bin
    Zhao, Xiangyu
    Ru, Gaige
    Li, Haoran
    NDT & E INTERNATIONAL, 2022, 132
  • [8] Lift-off effect reduction based on the dynamic trajectories of the received signal fast Fourier transform in pulsed eddy current testing
    Fu, Yuewen
    Lei, Meiling
    Li, Zhaoxi
    Gu, Zengtao
    Yang, Hao
    Cao, Aisong
    Sun, Jie
    NDT & E INTERNATIONAL, 2017, 87 : 85 - 92
  • [9] Measurement of Lift-Off Distance and Thickness of Nonmagnetic Metallic Plate Using Pulsed Eddy Current Testing
    Huang, Pu
    Li, Zhiying
    Long, Jun
    Xu, Lijun
    Xie, Yuedong
    IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 2023, 72
  • [10] Reduction of lift-off effect in pulsed eddy current testing for surface hardness classification of ferromagnetic steel
    Duan, Zhaoqi
    Kang, Yihua
    Chen, Yanting
    Wan, Zifu
    Wang, Shenghan
    MEASUREMENT, 2022, 205
12345