2008 ECT BENCHMARK RESULTS: MODELING WITH CIVA OF 3D FLAWS ...

2008 ECT BENCHMARK RESULTS: MODELING WITH CIVA OF 3D
FLAWS RESPONSES IN PLANAR AND CYLINDRICAL WORK
PIECES


C. Reboud, G. Pichenot D. Prémel and R. Raillon

CEA, LIST, Centre de Saclay, point courrier 120, F-91191 Gif-sur-Yvette cedex, France ;


ABSTRACT. The configurations proposed in the 2008 ECT modeling benchmark session are addressed
in this paper using the eddy current modeling tool embedded into CIVA, which is a multi-technique
simulation platform dedicated to NDT and developed at the French Atomic Energy Commission (CEA).
The theoretical approach used in CIVA for ECT modeling is based on Volume integral Method (VIM)
coupled with the Method of Moments (MoM) and thus leads to fast and accurate calculations in the case
of canonical geometries. Symmetries of the configurations considered in this benchmark are moreover
exploited by using the Dodd and Deed formalism for the field computations. After a presentation of the
semi-analytical model, results obtained in all benchmark cases are discussed and compared with
experimental data.

Keywords: Eddy Current Testing, Tube Inspection, Modeling, Benchmark, Volume Integral Method.
PACS: 81.70.Ex


INTRODUCTION

The CIVA software developed at the French Atomic Energy Commission for processing
and simulating NDT data includes tools for modeling eddy current inspection of a
component in which virtual defects are positioned. This paper presents the results of the
2008 eddy current benchmark ...