scholarly journals Influence of electric charge on numerical simulation of eddy current testing signals due to a conductive crack when using multi-media element

AIP Advances ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 035025
Author(s):  
Xudong Li ◽  
Cherdpong Jomdecha ◽  
Zhenmao Chen
Keyword(s):  
Numerical Simulation ◽  
Electric Charge ◽  
Eddy Current ◽  
Eddy Current Testing ◽  
Current Testing ◽  
Multi Media

scholarly journals Numerical Simulation of Non-Destructive Remote Field Eddy Current Testing of Rolled Metal Tubes

2019 ◽  
pp. 46-55
Author(s):  
A.G. Efimov ◽  
N.R. Kuzelev ◽  
E.V. Martyanov ◽  
B.M. Kanter ◽  
A.E. Shubochkin
Keyword(s):  
Numerical Simulation ◽  
Eddy Current ◽  
Current Method ◽  
Eddy Current Testing ◽  
Eddy Current Method ◽  
Current Testing ◽  
Advantages And Disadvantages ◽  
Current Transducer ◽  
Non Destructive ◽  
Eddy Current Transducer

The first publications describing the physical principles of the non-destructive remote field eddy current testing method appeared about 30 years ago. This method allows to significantly expand the field of application of eddy current testing. However, due to the lack of a theoretical justification, this method did not get widespread use around the world. Domestic publications in this area are completely absent, and the descriptions given in few foreign publications often contradict each other. There are no results of full-scale simulation using numerical methods in available domestic and foreign sources. The distinctive feature of this method under consideration is the ability of detecting defects on the external (with respect to the eddy current transducer) side of the tested object, which is impossible for the classical eddy current method due to the limited eddy current penetration depth. The basics of the method were considered, the distinctive features were presented, and the advantages and disadvantages of remote field eddy current testing of metals were pointed out. A numerical simulation with the subsequent analysis of the obtained results has been carried out, the transducer design for remote field eddy current testing is given. The influence of various factors on the change in the added voltage of the signal coil of the eddy current transducer in the presence of a defect in the external wall of the tube was considered. Expressions that determine the optimal ratio of the diameters of the transducer and the tested product were obtained. The values of the test parameters and the limiting wall thickness of the tested ferromagnetic product were determined.

scholarly journals Numerical simulation of non-destructive remote field eddy current testing of rolled metal tubes

2019 ◽  
Vol 1327 ◽  
pp. 012012
Author(s):  
A G Efimov ◽  
B M Kanter ◽  
N R Kuzelev ◽  
E V Martyanov ◽  
A E Shubochkin
Keyword(s):  
Numerical Simulation ◽  
Eddy Current ◽  
Eddy Current Testing ◽  
Rolled Metal ◽  
Current Testing ◽  
Non Destructive

scholarly journals 3D Numerical Simulation of Eddy Current Testing of a Block with a Crack

1990 ◽  
pp. 327-334 ◽  
Author(s):  
Toshiyuki Takagi ◽  
Mitsuo Hashimoto ◽  
Toshihiko Sugiura ◽  
So Norimatsu ◽  
Seiji Arita ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Eddy Current ◽  
Eddy Current Testing ◽  
3D Numerical Simulation ◽  
Current Testing

Probabilistic evaluation of detection capability of eddy current testing to inspect pitting on a stainless steel clad using multiple signal features

2020 ◽  
Vol 64 (1-4) ◽  
pp. 47-55
Author(s):  
Takuma Tomizawa ◽  
Haicheng Song ◽  
Noritaka Yusa
Keyword(s):  
Stainless Steel ◽  
Eddy Current ◽  
Pressure Vessels ◽  
Eddy Current Testing ◽  
Probability Of Detection ◽  
Current Testing ◽  
Multiple Signal ◽  
Signal Features ◽  
Inner Surface ◽  
Drill Holes

This study proposes a probability of detection (POD) model to quantitatively evaluate the capability of eddy current testing to detect flaws on the inner surface of pressure vessels cladded by stainless steel and in the presence of high noise level. Welded plate samples with drill holes were prepared to simulate corrosion that typically appears on the inner surface of large-scale pressure vessels. The signals generated by the drill holes and the noise caused by the weld were examined using eddy current testing. A hit/miss-based POD model with multiple flaw parameters and multiple signal features was proposed to analyze the measured signals. It is shown that the proposed model is able to more reasonably characterize the detectability of eddy current signals compared to conventional models that consider a single signal feature.

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