Evaluation of Electromagnetic Inspection of Hardened Depth of Spheroidal Graphite Cast Iron Using 3-D Nonlinear FEM

The inspection of the hardened depth of surface hardening spheroidal graphite cast iron is important in the maintenance of various mechanical parts, etc. There is a difference of the electromagnetic property in the layers with and without hardening. Therefore, the evaluation of the hardened depth is...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2010-08, Vol.46 (8), p.3137-3144
Main Authors: Gotoh, Yuji, Sasaguri, Nobuya, Takahashi, Norio
Format: Article
Language:English
Subjects:
3-D nonlinear finite element method
Applied sciences
Cast iron
Conductivity
Cross-disciplinary physics: materials science
rheology
Electromagnetic measurements
Electromagnetic properties
Exact sciences and technology
Ferrites
Finite element method
Hardened depth
Hardening. Tempering
Heat treatment
Inspection
interpolation of the electromagnetic property
Magnetic field measurement
Magnetism
Materials science
Materials science and technology
Mathematical models
Metals. Metallurgy
Nodular graphitic structure
Nonlinearity
Optical microscopy
Optical surface waves
Other topics in materials science
Physics
Power engineering and energy
Production techniques
Surface hardening
surface hardening spheroidal graphite cast iron
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Summary:The inspection of the hardened depth of surface hardening spheroidal graphite cast iron is important in the maintenance of various mechanical parts, etc. There is a difference of the electromagnetic property in the layers with and without hardening. Therefore, the evaluation of the hardened depth is possible by detecting the difference of the electromagnetic characteristic. In this paper, the electromagnetic method for measuring the depth of a hardened layer using an alternating magnetic field is proposed. The flux density in the surface hardening spheroidal graphite cast iron is estimated by 3-D nonlinear FEM taking account of the electromagnetic property of the layers with and without hardening. In addition, the experimental verification is also carried out.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2010.2043232