Title :
Electromagnetic Properties Evaluation of High Chromium Ferritic Steel by Eddy-Current Method
Author :
Tian, H. ; Uchimoto, T. ; Takagi, T.
Author_Institution :
Inst. of Fluid Sci., Sendai
Abstract :
In this paper, a pancake-coil impedance model is derived from partial differential equation. Comparing with well established theory by Dodd and Deeds, the presented model is simplified, but can solve the problem that Dodd formula sometimes meets "overflow" error in the case of ferritic steel.In addition, a series of base and heat affected zone (HAZ) materials in different heat treatment conditions are experimentally measured.Then, conductivity and permeability are determined by searching for the accordance with theoretical calculation.
Keywords :
chromium; eddy current testing; electrical conductivity; heat treatment; magnetic permeability; steel; Dodd formula; FeCCrJk; conductivity; eddy-current method; electromagnetic properties; heat affected zone material; heat treatment; high chromium ferritic steel; pancake-coil impedance model; permeability; Building materials; Chromium; Coils; Conducting materials; Conductivity measurement; Electrical resistance measurement; Microstructure; Nondestructive testing; Permeability; Steel;
Conference_Titel :
Magnetics Conference, 2006. INTERMAG 2006. IEEE International
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-1479-2
DOI :
10.1109/INTMAG.2006.376386
