部分接触SCCの渦電流探傷による新しい深さサイジング法
英字タイトル:
A New Depth Sizing Method for Partial-Contact Stress Corrosion Cracks from ECT Signals
著者:
兼本 茂 Shigeru KANEMOTO 程 衛英 Weiying CHENG 志波 光晴 Mitsuharu SHIWA 古村 一朗 Ichiro KOMURA
発刊日:
公開日:
Depth SizingEddy Current TestSCC
A New Depth Sizing Method for Partial-Contact Stress Corrosion Cracks from ECT Signals
著者:
兼本 茂 Shigeru KANEMOTO 程 衛英 Weiying CHENG 志波 光晴 Mitsuharu SHIWA 古村 一朗 Ichiro KOMURA
発刊日:
公開日:
カテゴリ: 論文
キーワードタグ:Depth SizingEddy Current TestSCC
概要
A partial-contact stress corrosion crack (SCC) is electrically modeled as a crack region with non-zero conductivity in eddy current testing (ECT). This partial-contact effect is excluded by an optimally designed crack-conductivity-insensitive depth sizing index, and consequently the master curves obtained from electric-discharge machining (EDM) notches can be utilized directly in the depth sizing of SCCs. This approach is numerically validated and applied to the characterization of SCCs in SUS304 from measurement ECT signals. The average depth of each SCC is fast estimated from the depth sizing index. The ECT depth-sizing results show reasonable agreement with UT-TOFD measurement.
