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Developing Optimal Strategies for Structural Health Monitoring: Stochastic Inverse Methodologies for Interrogating Dielectric Materials Using Microwaves

17 Oct 2011-
TL;DR: In this paper, a stochastic inversion technique based on the Metropolis-Hasting algorithm was applied to the problem of quantitative nondestructive evaluation (QNDE) of material aging parameters.
Abstract: : The quantitative nondestructive evaluation (QNDE) of material aging parameters continues to be a very challenging problem. In our approach, we formulated a forward problem arising in specific micro guided wave test. A stochastic inversion technique based on the Metropolis-Hasting algorithm was applied to the problem. The feasibility and validity of the approach was demonstrated through computational experiments.
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Journal ArticleDOI
TL;DR: In this article, the identification of two-dimensional spatial domains arising in the detection and characterization of material damage is considered, and approximation schemes are developed applying a finite element Galerkin approach.
Abstract: Problems on the identification of two-dimensional spatial domains arising in the detection and characterization of material damage are considered. For electromagnetic nondestructive evaluation systems, observations of the magnetic flux from the front surface are used in a output least-squares approach. Parameter estimation techniques based on the method of mappings are discussed and approximation schemes are developed applying a finite-element Galerkin approach. Theoretical convergence results for computational techniques are given and results are applied to numerical experiments to demonstrate the efficacy of the proposed schemes.

16 citations


"Developing Optimal Strategies for S..." refers background in this paper

  • ...For OLSI related to electromagnetic inversion, we refer [3][4][5][6][7]....

    [...]

Journal ArticleDOI
05 May 2011
TL;DR: In this paper, a stochastic inverse methodology arising in electromagnetic imaging is proposed for the identification of electromagnetic material parameters and emphasis is on one dimensional scattering of a dielectric slab, which can be solved numerically using the finite-difference time-domain method (FDTD).
Abstract: : This paper is concerned with a stochastic inverse methodology arising in electromagnetic imaging. Nondestructive testing using guided microwaves covers a wide range of industrial applications including early detection of anomalies in conducting materials. The focus of this paper is the identification of electromagnetic material parameters and emphasis is on one dimensional scattering of a dielectric slab. The direct problem can be solved numerically using the finite-difference time-domain method (FDTD). The Markov Chain Monte Carlo method (MCMC) is applied to the inversion problem. Some successful results of computational experiments are demonstrated in order to show the feasibility and applicability of the proposed method.

15 citations


Additional excerpts

  • ...the similar approach has been proposed in [10], [11]....

    [...]

Book ChapterDOI
01 Jan 2003

12 citations


"Developing Optimal Strategies for S..." refers background in this paper

  • ...For OLSI related to electromagnetic inversion, we refer [3][4][5][6][7]....

    [...]

Journal ArticleDOI
TL;DR: In this article, a nondestructive testing is described by quasi-steady state vector potential problems in three dimensions and an analytical approach is proposed with the background knowledge of domain identification problem.
Abstract: This paper is concerned with deep-lying profiles identification of stress corrosion cracking related to eddy current testing. A nondestructive testing is described by quasi-steady state vector potential problems in three dimensions. An analytical approach is proposed with the background knowledge of domain identification problem. Applying the method of mapping to the problem treated here, a computational method is proposed for recovering stress corrosion crack shape.

6 citations


"Developing Optimal Strategies for S..." refers background in this paper

  • ...For OLSI related to electromagnetic inversion, we refer [3][4][5][6][7]....

    [...]

Journal ArticleDOI
05 May 2004

4 citations


Additional excerpts

  • ...the similar approach has been proposed in [10], [11]....

    [...]