Affiliations: The University of Shiga Prefecture, Hikone, Shiga, Japan
Correspondence:
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Corresponding author: Katsuhiro Fukuoka, The University of Shiga Prefecture, 2500 Hassaka-cho, Hikone, Shiga 522-8533, Japan. Tel.: +81 749 28 9554; Fax: +81 749 28 9554; E-mail:fukuoka.k@usp.ac.jp
Abstract: As magnetic particle testing (MT) detects microcracks
using a simplified method, it is used for non-destructive inspection of
ferromagnetic materials in various industrial fields. However, MT can
provide only a rough distribution shape of a crack; a quantitative technique
for evaluating the crack shape has not been established in conventional MT.
In the present study, the relationship between the crack shape and the shape
of the adhered magnetic particles was revealed by image measurements using a
high-speed video camera. We developed a technique for quantitatively
evaluating the crack shape from the results of magnetic particle indication
in MT.
