Simulation Study and Application of Eddy Current Array C-scan Imaging Technique to Examine Austenite Stainless Steel

doi:10.3901/JME.2021.24.192

Abstract

Abstract: The effects of the probe design parameters on the eddy current array C-scan imaging, and the flaw characterization of the eddy current array imaging technique to test the austenite stainless steel, are targeted to be known. The effects of the coil size, the array operating mode and the number of the array rows on the flaw C-scan imaging, were studied by means of CIVA software simulation, and the characteristics of the typical surface-breaking flaws such as the cracks, the round flaws in the Austenite stainless steel material, were studied by means of their eddy current array C-scan images. The results show that, for the eddy current array probe, the absolute bridge operating mode, insensitive to the orientation of the flaw, is beneficial to the eddy current array C-scan imaging, but the absolute transmit-receiver operating mode not; the smaller coil outer diameter and the more array rows, causing a smaller vertical resolving power, are more beneficial to the C-scan imaging; there is little interference with the C-scan imaging for the uniform surface of the Austenite stainless steel, so the flaw surface-breaking shape characteristics may be reflected, the typical surface-breaking flaws characterized by the eddy current array C-scan imaging technique to some extent.

Key words: eddy current array C-scan imaging, austenite stainless steel, surface-breaking flaws, flaw characterization, probe design parameters, CIVA simulation

CLC Number:

TG156

LI Yuntao, ZHENG Hui, WAN Benli, HU Bin. Simulation Study and Application of Eddy Current Array C-scan Imaging Technique to Examine Austenite Stainless Steel[J]. Journal of Mechanical Engineering, 2021, 57(24): 192-199.

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