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A Comparative Study on Methods of Distinction Between Near- and Far-Side Defects as Techniques Used Alongside with the Magnetic Flux Leakage Testing
Abstract
Results of the finite element analysis show that a far-side defect in a steel plate, with the depth greater by 10% of the plate thickness than a near-side defect, can produce a very similar magnetic flux leakage (MFL) signal. Due to the fact that a measurement of MFL itself can lead to misclassification of a far-side defect as a near-side one, and thus to underestimation of its depth, a comparative study of three complementary magnetic techniques was performed. The following techniques were studied: surface topology air-gap reluctance system (STARS), residual magnetic flux leakage (RMFL) and stray magnetic flux leakage (SMFL). Numerical results showed that in the case of the STARS and SMFL, defect signatures in signals were observed for investigated near-side defects, but not for far-side defects. The signature of the far-side defect in the RMFL was observed, however its peak-to-peak value was only about 8% of the value corresponding to the near-side defect.
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- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s10921-022-00844-7
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- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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JOURNAL OF NONDESTRUCTIVE EVALUATION
no. 41,
pages 1 - 10,
ISSN: 0195-9298 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Usarek Z., Chmielewski M., Piotrowski L.: A Comparative Study on Methods of Distinction Between Near- and Far-Side Defects as Techniques Used Alongside with the Magnetic Flux Leakage Testing// JOURNAL OF NONDESTRUCTIVE EVALUATION -Vol. 41,iss. 12 (2022), s.1-10
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s10921-022-00844-7
- Sources of funding:
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- COST_FREE
- Verified by:
- Gdańsk University of Technology
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