Difference in the detection limits of flaws in the depths of multi-layered and continuous aluminum plates using low-frequency eddy current testing

Hironobu Yamada; Teruki Hasegawa; Yudai Ishihara; Toshihiko Kiwa; Keiji Tsukada

doi:10.1016/j.ndteint.2007.08.004

Difference in the detection limits of flaws in the depths of multi-layered and continuous aluminum plates using low-frequency eddy current testing

Hironobu Yamada, Teruki Hasegawa, Yudai Ishihara, Toshihiko Kiwa, Keiji Tsukada

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

We examined the difference in the detection limits of flaws in the depths of multi-layered and continuous aluminum plates using low-frequency eddy current testing. The detection limits were measured by using a magneto-resistive sensor. Comparing the frequency of an applied magnetic field, the detection limit at 50 Hz is deeper than that at 1 kHz. Comparing the sample structure, the detection limit in the multi-layered samples is deeper than that in the continuous samples. These results are likely due to the differences in the skin depth and conductivity of the sample.

Original language	English
Pages (from-to)	108-111
Number of pages	4
Journal	NDT and E International
Volume	41
Issue number	2
DOIs	https://doi.org/10.1016/j.ndteint.2007.08.004
Publication status	Published - Mar 2008

Keywords

Eddy current testing
Low-frequency magnetic field
Magneto-resistive sensor
Non-destructive testing

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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title = "Difference in the detection limits of flaws in the depths of multi-layered and continuous aluminum plates using low-frequency eddy current testing",

abstract = "We examined the difference in the detection limits of flaws in the depths of multi-layered and continuous aluminum plates using low-frequency eddy current testing. The detection limits were measured by using a magneto-resistive sensor. Comparing the frequency of an applied magnetic field, the detection limit at 50 Hz is deeper than that at 1 kHz. Comparing the sample structure, the detection limit in the multi-layered samples is deeper than that in the continuous samples. These results are likely due to the differences in the skin depth and conductivity of the sample.",

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AU - Kiwa, Toshihiko

AU - Tsukada, Keiji

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KW - Non-destructive testing

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