Clutter Removal and Inversion of Eddy-Current Impedance Data (Postprint)

Abstract

A wide variety of problems in computational electromagnetics have been successfully solved using a volume-integral approach along with conjugate-gradient methods. The volume integral algorithm is particularly well suited to the notion of model-based inversion of eddy-current impedance data in the arena of quantitative nondestructive evaluation (NDE). The first step in preparing data for inversion is to remove 'clutter,' which can originate in systematic measurement errors, or simply be a large background signal. In this paper we develop a systematic analytical technique to remove such clutter, which then allows the resulting impedance data to be fed into a nonlinear least-squares inversion algorithm, NLSE. The computational engine for the analysis is VIC-3D , a proprietary volume-integral code.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2006
Accession Number
ADA476939

Entities

People

  • Elias H. Sabbagh
  • Eric Lindgren
  • Harold A. Sabbagh
  • Jeremy S. Knopp
  • John C. Aldrin
  • R. K. Murphy

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Air Force Research Laboratories
  • Department Of Defense
  • Eddy Currents
  • Impedance
  • Information Operations
  • Integral Equations
  • Integrals
  • Inversion
  • Manufacturing
  • Materials
  • Mathematics
  • Military Research
  • Test And Evaluation
  • United States

Fields of Study

  • Physics

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