NDLI: Fatigue Evaluation for a Ferritic Stainless Steel (SUS430) by the Eddy Current Method Using the Pancake-Type Coil

Content Provider	IEEE Xplore Digital Library
Author	Oka, M. Tsuchida, Y. Yakushiji, T. Enokizono, M.
Copyright Year	1965
Abstract	To prevent accidents caused by the accumulation of fatigue damage, it is important to evaluate fatigue damage in stainless steel, a widely used structural material. SUS430 (ANSI430) is a ferritic stainless steel. It is well known that the electromagnetic properties of SUS430 such as permeability and resistivity, change due to fatigue damage. The eddy current method can detect change in the electromagnetic properties of SUS430. In this research, the eddy current method using the pancake-type coil was used to find fatigue damage in SUS430. The pancake-type coil was put on a specimen made of SUS430, and excited with alternating current. When a pancake-type coil and a specimen are adjacent, the change in permeability and resistivity of the specimen due to fatigue influences coil constants such as inductance L and phase angle ¿ of impedance. In our experiment, L and ¿ clearly depended on an increase in the bending stress and the number of stress cycles. It can, therefore, be said that L and ¿ are clearly influenced by fatigue damage. In this paper, the results of investigating the relationships between the amount of fatigue damage, bending stress, L, and ¿ are reported.
Sponsorship	IEEE Magnetics Society
Starting Page	540
Ending Page	543
Page Count	4
File Size	352026
File Format	PDF
ISSN	00189464
Volume Number	46
Issue Number	2
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-02-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fatigue Steel Eddy currents Coils Stress Permeability Conductivity Accidents Building materials Inductance SUS430 Eddy current testing fatigue inductance
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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