Depth Evaluation of Slits on Galvanized Steel Plate Using a Low Frequency Eddy Current Probe

2020 ◽  
pp. 59-66
Author(s):  
N. A. Nadzri ◽  
M. M. Saari ◽  
M. A. H. P. Zaini ◽  
A. M. Halil ◽  
A. J. S. Hanifah ◽  
...  
Keyword(s):  
Eddy Current ◽  
Steel Plate ◽  
Low Frequency ◽  
Galvanized Steel

Measurement of Wall Thinning through Insulation with Ferromagnetic Cladding Using Pulsed Eddy Current Testing

2011 ◽  
Vol 301-303 ◽  
pp. 426-429
Author(s):  
Zhi Yuan Xu ◽  
Xin Jun Wu ◽  
Chen Huang ◽  
Yi Hua Kang
Keyword(s):  
Eddy Current ◽  
Steel Plate ◽  
Thickness Measurement ◽  
Measurement Range ◽  
Galvanized Steel ◽  
Shielding Effect ◽  
Pulsed Eddy Current ◽  
Wall Thinning ◽  
The Common ◽  
Lift Off

Pulsed eddy current (PEC) technique has been successfully used for measuring wall thinning of carbon steel equipments without removal of the insulation. In field applications, the probe performance decreases in presence of ferromagnetic claddings. This paper presents a method based on saturation magnetization to solve this problem. The main principle of this method is to weaken the magnetic shielding effect of the cladding by magnetizing it to saturation. A U-shaped magnetizer is designed to realize this method. Contrast experiments are performed on a Q235 steel plate covered by a galvanized steel cladding. The experiment results show that the thickness measurement range and lift-off range are increased by applying this method to the common PEC probe.

Detection of Slit Defects on Backside of Steel Plate Using Low-Frequency Eddy-Current Testing

2018 ◽  
Vol 54 (11) ◽  
pp. 1-5 ◽  
Author(s):  
Wataru Yoshimura ◽  
Ryo Tanaka ◽  
Teruyoshi Sasayama ◽  
Keiji Enpuku
Keyword(s):  
Eddy Current ◽  
Steel Plate ◽  
Low Frequency ◽  
Eddy Current Testing ◽  
Current Testing

scholarly journals Research on Detection Mechanism of Weld Defects of Carbon Steel Plate Based on Orthogonal Axial Eddy Current Probe

Sensors ◽  
2020 ◽  
Vol 20 (19) ◽  
pp. 5515
Author(s):  
Linnan Huang ◽  
Chunhui Liao ◽  
Xiaochun Song ◽  
Tao Chen ◽  
Xu Zhang ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Eddy Current ◽  
Steel Plate ◽  
Difficult Problem ◽  
Eddy Current Testing ◽  
Detection Sensitivity ◽  
Detection Mechanism ◽  
Current Testing ◽  
Weld Defects ◽  
Lift Off

The uneven surface of the weld seam makes eddy current testing more susceptible to the lift-off effect of the probe. Therefore, the defect of carbon steel plate welds has always been a difficult problem in eddy current testing. This study aimed to design a new type of eddy current orthogonal axial probe and establish the finite element simulation model of the probe. The effect of the probe structure, coil turns, and coil size on the detection sensitivity was simulated. Further, a designed orthogonal axial probe was used to conduct a systematic experiment on the weld of carbon steel specimens, and the 0.2 mm width and 1 mm depth of weld defects of carbon steel plates were effectively detected. The experimental results showed that the new orthogonal axial eddy current probe effectively suppressed the unevenness effect of the weld surface on the lift-off effect during the detection process.

Thickness Measurement of an Iron Plate Using Low-Frequency Eddy Current Testing With an HTS Coil

2016 ◽  
Vol 26 (5) ◽  
pp. 1-5 ◽  
Author(s):  
Teruyoshi Sasayama ◽  
Tomoki Ishida ◽  
Masaaki Matsuo ◽  
Keiji Enpuku
Keyword(s):  
Eddy Current ◽  
Low Frequency ◽  
Thickness Measurement ◽  
Eddy Current Testing ◽  
Iron Plate ◽  
Current Testing

Numerical study on corrosion profile estimation of a corroded steel plate using eddy current

2019 ◽  
Vol 15 (9) ◽  
pp. 1151-1164 ◽  
Author(s):  
Sanjeema Bajracharya ◽  
Eiichi Sasaki ◽  
Hiroshi Tamura
Keyword(s):  
Eddy Current ◽  
Steel Plate ◽  
Numerical Study ◽  
Profile Estimation
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