Conductivity and permeability evaluation on type IV damage investigation by electromagnetic method

Haiyan Tian, Tetsuya Uchimoto, Toshiyuki Takagi, Yukio Takahashi

研究成果: Chapter

1 被引用数 (Scopus)

抄録

Type IV damage in power plants is a premature failure that occurs in the softened heat-affected zone (HAZ) of weldment. Eddy-current method is applied to evaluate electromagnetic properties of high-chromium ferritic steels in order to investigate the material changes of HAZ and base metal in Type IV damage evaluation. A pancake-coil impedance model based upon eddy current theory is proposed to evaluate conductivity and permeability. A series of HAZ and base metal specimens of Modified 9Cr-1Mo steel in different heat treatment conditions are experimentally measured and then their conductivity and permeability are estimated. The evaluated results illustrate electromagnetic properties between heat treatment specimens in different test time can be clearly distinguished by presented approach.

本文言語English
ホスト出版物のタイトルElectromagnetic Nondestructive Evaluation (X)
編集者Seiki Takahashi, Hiroaki Kikuchi
ページ99-105
ページ数7
出版ステータスPublished - 2007

出版物シリーズ

名前Studies in Applied Electromagnetics and Mechanics
28
ISSN(印刷版)1383-7281
ISSN(電子版)1879-8322

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering

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