2024
DOI: 10.3390/s24113689
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Evaluation of Depth Size Based on Layered Magnetization by Double-Sided Scanning for Internal Defects

Zhiyang Deng,
Dingkun Qian,
Haifei Hong
et al.

Abstract: The quantitative evaluation of defects is extremely important, as it can avoid harm caused by underevaluation or losses caused by overestimation, especially for internal defects. The magnetic permeability perturbation testing (MPPT) method performs well for thick-walled steel pipes, but the burial depth of the defect is difficult to access directly from a single time-domain signal, which is not conducive to the evaluation of defects. In this paper, the phenomenon of layering of magnetization that occurs in fer… Show more

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