The Detection of Defects on Metallic Subsurface Based on Pulsed Eddy Current Thermography

2020 ◽  
pp. 1183-1193
Author(s):  
Fan Jiang ◽  
Xiaoyu Xu ◽  
Dong Zhen ◽  
Hao Zhang ◽  
Shijie Dai ◽  
...  
Keyword(s):  
Eddy Current ◽  
Pulsed Eddy Current ◽  
Detection Of Defects

Investigation of pulsed eddy current probes for detection of defects in riveted structures

2013 ◽  
Vol 28 (3) ◽  
pp. 278-290 ◽  
Author(s):  
Binfeng Yang ◽  
Hui Zhang ◽  
Zhibin Kang ◽  
Xiaofeng Wang
Keyword(s):  
Eddy Current ◽  
Pulsed Eddy Current ◽  
Detection Of Defects

Design of a pulsed eddy current sensor for detection of defects in aircraft lap-joints

2002 ◽  
Vol 101 (1-2) ◽  
pp. 92-98 ◽  
Author(s):  
Ali Sophian ◽  
Gui Yun Tian ◽  
David Taylor ◽  
John Rudlin
Keyword(s):  
Eddy Current ◽  
Lap Joints ◽  
Current Sensor ◽  
Eddy Current Sensor ◽  
Pulsed Eddy Current ◽  
Detection Of Defects

Analysis of field uniformity and quantitative evaluation of subsurface pitting corrosion in conductors via GPEC

2020 ◽  
Vol 64 (1-4) ◽  
pp. 19-29
Author(s):  
Shuting Ren ◽  
Yong Li ◽  
Bei Yan ◽  
Jinhua Hu ◽  
Ilham Mukriz Zainal Abidin ◽  
...  
Keyword(s):  
Quantitative Evaluation ◽  
Eddy Current ◽  
Pitting Corrosion ◽  
Gradient Field ◽  
Uniform Field ◽  
Eddy Current Method ◽  
Optimal Position ◽  
Pulsed Eddy Current ◽  
Field Uniformity ◽  
Processing Algorithms

Structures of nonmagnetic materials are broadly used in engineering fields such as aerospace, energy, etc. Due to corrosive and hostile environments, they are vulnerable to the Subsurface Pitting Corrosion (SPC) leading to structural failure. Therefore, it is imperative to conduct periodical inspection and comprehensive evaluation of SPC using reliable nondestructive evaluation techniques. Extended from the conventional Pulsed eddy current method (PEC), Gradient-field Pulsed Eddy Current technique (GPEC) has been proposed and found to be advantageous over PEC in terms of enhanced inspection sensitivity and accuracy in evaluation and imaging of subsurface defects in nonmagnetic conductors. In this paper two GPEC probes for uniform field excitation are intensively analyzed and compared. Their capabilities in SPC evaluation and imaging are explored through simulations and experiments. The optimal position for deployment of the magnetic field sensor is determined by scrutinizing the field uniformity and inspection sensitivity to SPC based on finite element simulations. After the optimal probe structure is chosen, quantitative evaluation and imaging of SPC are investigated. Signal/image processing algorithms for SPC evaluation are proposed. Through simulations and experiments, it has been found that the T-shaped probe together with the proposed processing algorithms is advantageous and preferable for profile recognition and depth evaluation of SPC.

Multi-Tubular Corrosion Inspection Using a Pulsed Eddy Current Logging Tool

2013 ◽  
Author(s):  
Marvin Rourke ◽  
Yong Li ◽  
Glyn Roberts
Keyword(s):  
Eddy Current ◽  
Pulsed Eddy Current ◽  
Logging Tool

Real-time wavelet denoising for pulsed eddy current signal based on heterogeneous dual-core

2013 ◽  
Vol 33 (3) ◽  
pp. 866-870
Author(s):  
Xuanbing QIU ◽  
Jilin WEI ◽  
Xiaochao CUI ◽  
Chunhua XIA
Keyword(s):  
Real Time ◽  
Eddy Current ◽  
Wavelet Denoising ◽  
Current Signal ◽  
Pulsed Eddy Current ◽  
Dual Core

Steel Corrosion Characterization Using Pulsed Eddy Current Systems

2012 ◽  
Vol 12 (6) ◽  
pp. 2113-2120 ◽  
Author(s):  
Yunze He ◽  
Guiyun Tian ◽  
Hong Zhang ◽  
Mohammed Alamin ◽  
Anthony Simm ◽  
...  
Keyword(s):  
Eddy Current ◽  
Steel Corrosion ◽  
Pulsed Eddy Current ◽  
Current Systems
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