Sizing methodology of pipe wall thinning using inverse analysis with EMAT signal


英字タイトル:
Sizing methodology of pipe wall thinning using inverse analysis with EMAT signal
著者:
NGUYEN Thanh Duong Fumio KOJIMA
発刊日:
公開日:
カテゴリ: 第6回
キーワードタグ:

概要

This paper proposes a method for sizing pipe wall thinning, using pulse-echo EMAT modes. First, the proposed method deploys a compact simulator model to eff iciently reduce the computational cost of EMAT forward analysis. Then, an approach of signal processing based on peak values at back-wall echo and POD method is applied to EMAT signal are introduced. Finally, inverse analysis based on reduced POD basics is applied for defect parameters identification. Promising e xperimental results with high accuracy on both simulation and synthetic measurement data demonstrate the capability and effectiveness of the proposed method.


全文掲載のPDFファイルダウンロード