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Effect of Scanning Acceleration on the Leakage Signal in Magnetic Flux Leakage Type of Non-destructive Testing

Zhang, L; Cameron, IM; Ledger, PD; Belblidia, F; Pearson, NR; Charlton, P; Sienz, J

Effect of Scanning Acceleration on the Leakage Signal in Magnetic Flux Leakage Type of Non-destructive Testing Thumbnail


Authors

L Zhang

IM Cameron

F Belblidia

NR Pearson

P Charlton

J Sienz



Abstract

This work investigates the influence of acceleration on the leakage signal in magnetic flux leakage type of non-destructive testing. The research is addressed through both designed experiments and simulations. The results showed that the leakage signal, represented by using peak to peak value, decreases between 15.1% and 26.6% under acceleration. The simulation results indicated that the main reason for the decrease is due to the difference in the distortion of the magnetic field for cases with and without acceleration, which is the result of the different eddy current distributions in the specimen. The findings will help to allow the optimisation of a magnetic flux leakage system to ensure that main defect features can be measured more accurately during the machine acceleration phase of scanning. It also shows the importance of conducting measurements at constant velocity, wherever possible.

Citation

Zhang, L., Cameron, I., Ledger, P., Belblidia, F., Pearson, N., Charlton, P., & Sienz, J. (2023). Effect of Scanning Acceleration on the Leakage Signal in Magnetic Flux Leakage Type of Non-destructive Testing. Journal of Nondestructive Evaluation, https://doi.org/10.1007/s10921-023-00925-1

Acceptance Date Jan 7, 2023
Publication Date Mar 1, 2023
Journal Journal of Nondestructive Evaluation
Print ISSN 0195-9298
Publisher Springer Verlag
DOI https://doi.org/10.1007/s10921-023-00925-1
Publisher URL https://link.springer.com/article/10.1007/s10921-023-00925-1

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