A method to compensate for the lift off effect of ACFM in crack estimation of nonferromagnetic metals

Shuxiang Zhao,Ying Shen,Lingsi Sun,Jiazeng Wang,Zhineng Mao,Zhaoqiang Chu,Jiamin Chen,Junqi Gao

Journal of Magnetism and Magnetic Materials（2022）

引用 6|浏览1

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摘要

•A lift-off effect compensation algorithm is able to estimate the crack dimensions without considering the lift-off distance.•A theoretical model is developed based on ACFM magnetic signal.•The crack depth can be inversed and the error is limited to 10%.

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关键词

Lift-off effect,Compensation method,ACFM,Aluminum plate,Crack estimation

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