Location

Snowmass Village, CO

Start Date

1-1-1995 12:00 AM

Description

Eddy current NDE has been used for many years to effectively detect defects in conducting materials [1]. However, a major limitation associated with the technique is that imaging techniques are generally qualitative classification schemes which rely on calibration procedures. This is because eddy current phenomena are governed by diffusion, and as such, quantitative inversion/imaging schemes which rely on properties of wave propagation such as diffraction, scattering, and time-of-flight are not applicable. This paper will examine the possibility of using phase shifts associated with time-harmonic eddy current phenomena to solve quantitative inverse problems in the same manner that phase shifts of wave propagation are used.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

14A

Chapter

Chapter 3: Interpretive Signal Processing and Image Analysis

Section

Imaging and Reconstruction

Pages

863-870

DOI

10.1007/978-1-4615-1987-4_108

Language

en

File Format

application/pdf

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Jan 1st, 12:00 AM

On Phase-Based Imaging of Eddy Current Nondestructive Evaluation

Snowmass Village, CO

Eddy current NDE has been used for many years to effectively detect defects in conducting materials [1]. However, a major limitation associated with the technique is that imaging techniques are generally qualitative classification schemes which rely on calibration procedures. This is because eddy current phenomena are governed by diffusion, and as such, quantitative inversion/imaging schemes which rely on properties of wave propagation such as diffraction, scattering, and time-of-flight are not applicable. This paper will examine the possibility of using phase shifts associated with time-harmonic eddy current phenomena to solve quantitative inverse problems in the same manner that phase shifts of wave propagation are used.