A systematic review of coercivity measurements in the lift of effect for non-destructive testing method

Al-Fadzrul Azim Al-Fadhir and Fauziah Sulaiman and Saturi Baco (2025) A systematic review of coercivity measurements in the lift of effect for non-destructive testing method. Borneo Science, 46 (1). pp. 1-13. ISSN 2231-9085

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Abstract

Coercivity is the strength of the reverse magnetic field required to demagnetise a material after saturation which is a crucial indicator of the hardness of magnetic materials. However, errors in coercivity measurement known as the lift-off effect can be caused by air gaps. This paper investigates the literature on the gap between novel methods to tackle this issue. There was literature reporting that by integrating additional inductance measurements and developing a calibration method, it aim to mitigate the impact of air gaps. The rationale behind this calibration method is that changes in air gaps affect both coercivity and inductance measurements. Therefore, the need for a systematic literature review is crucial to synthesise empirical data on using or implementing these methods. This paper attempts to identify the trends and the focus in the field of study which is a key step in advancing our understanding of the topic. The study utilised the Science Direct, Scopus, and ProQuest based on the preferred reporting items for systematic reviews and meta-analyses (PRISMA). From the 136 documents that was fitted under the keywords - lift-off effect, coercivity measurement, magnetic materials and non-destructive testing from 2014 to 2024, only 17 original articles were published. The findings reveal that the United Kingdom is the dominant country in conducting reducing the lift-off effect on magnetic plates papers. Followed by The United States-Korea and finally is Poland. The research samples were also more focused on auxiliary inductance data, multifrequency induction data, testing of metallic spherical geometry, sensors based on their equivalent parameters, and using fibre optic Eddy current sensors to detect defects in the magnetic material. Therefore, this shows a clear gap between the present research and its future direction.

Item Type:	Article
Keyword:	Inductance measurement, Lift-off effect, Coercervity measurement, Non-destructive testing, Magnetic material
Subjects:	T Technology > T Technology (General) > T1-995 Technology (General) T Technology > TA Engineering (General). Civil engineering (General) > TA1-2040 Engineering (General). Civil engineering (General) > TA401-492 Materials of engineering and construction. Mechanics of materials
Department:	FACULTY > Faculty of Science and Technology
Depositing User:	SITI AZIZAH BINTI IDRIS -
Date Deposited:	20 Aug 2025 10:40
Last Modified:	20 Aug 2025 10:40
URI:	https://eprints.ums.edu.my/id/eprint/45008

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