Messine, an Eddy Current Parametric Model for Flaw Characterization
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
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The MESSINE code (Model for Electromagnetic Simplified Simulation In Nondestructive Evaluation) has been developed at CEA/CEREM in order to characterize flaws in steam generator tubes. No analytical or numerical models, that are well adapted to this problem, have been found in the literature. Constructing a forward model by solving Maxwell’s equations seems rather difficult and numerical models (e.g. finite element approach) are not convenient, due to their long computation time. Thus, a new simplified parametric forward model has been constructed using the following three axes: • 2D defect-free configurations for studying the detection capabilities, • 2D and 3D configurations with defects to obtain signal expertise, • defect characterization i.e., eddy current signal inversion.