An inversion scheme for sizing of wall thinning defects from pulsed eddy current testing signals

Shejuan Xie, Zhenmao Chen, Li Wang, Toshiyuki Takagi, Tetsuya Uchimoto

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

In this paper, an inversion algorithm has been proposed and validated, based on a fast simulator of pulsed eddy current testing (PECT) signals and a deterministic optimization strategy, for the profile reconstruction of wall thinning in pipes of nuclear power plants. Local wall thinning is modelled as a group of planar defects with different length and depth, reconstructed from two-dimensional PECT signals. Through inverse analysis of simulated signals and signals with random noise, the efficiency and the robustness of the proposed algorithm have been demonstrated.

Original languageEnglish
Pages (from-to)203-211
Number of pages9
JournalInternational Journal of Applied Electromagnetics and Mechanics
Volume39
Issue number1-4
DOIs
Publication statusPublished - 2012

Keywords

  • QNDT
  • Wall thinning
  • conjugate gradient
  • inversion problem
  • pulsed ECT

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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